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SUMMARY PARAGRAPH for SLM5
About aminoacyl-tRNA synthetases...
In a process critical for accurate translation of the genetic code, aminoacyl-tRNA synthetases (aka aminoacyl-tRNA ligases) attach amino acids specifically to cognate tRNAs, thereby "charging" the tRNAs. The catalysis is accomplished via a two-step mechanis... | <urn:uuid:b69f78eb-4c8e-40bb-8c31-21198fd83c0d> | 2.828125 | 395 | Academic Writing | Science & Tech. | 18.313995 | 2,800 |
August 28, 2006
Part XV: Astrobiology
Life and Death on Ice-Covered Worlds
University of California, Berkeley
24 min. (slideshow requires QCShow Player)
Audio only (mp3 format)
View as a webpage (quicktime, real player) (notes)
Three feet of ice does not result from one day of cold weather.
— Chinese proverb
The notion... | <urn:uuid:ec82de1b-8c83-44a1-bff1-5ab135d69712> | 3.453125 | 1,195 | News (Org.) | Science & Tech. | 31.627373 | 2,801 |
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
November 11, 1998
Explanation: On some nights the sky is the most interesting show in town. This picture captures a particularly active and colorful... | <urn:uuid:31ef45df-0c90-4475-ae5c-6b100b798e81> | 2.78125 | 163 | Knowledge Article | Science & Tech. | 30.557957 | 2,802 |
For the generations that grew up with TV before the age of cable, the box in our living room was a time machine, capable of taking us back to just a few hundred thousand years after the birth of the Universe. We just didn't realize it. Nor did the scientists that discovered this, at least at first. But luck seemed to p... | <urn:uuid:ea24e2ad-05a0-405e-bc04-78be4719739d> | 2.765625 | 1,445 | News Article | Science & Tech. | 52.639315 | 2,803 |
Interstellar dust grains have their origin in the material ejected by stars. They form in dense, relatively cool environments such as the atmospheres of red giant stars, and are released into the interstellar medium by radiation pressure, stellar winds or in material thrown off in stellar explosions. They generally sta... | <urn:uuid:56918f87-1e41-49c5-82f8-7f6ffb9efd05> | 4.21875 | 522 | Knowledge Article | Science & Tech. | 39.42826 | 2,804 |
Looking under the hood at the LHC (Courtesy: CERN)
By Hamish Johnston
By all accounts the Large Hadron Collider (LHC) and its experiments are working much better than expected and are gathering data like gangbusters. So it might seem strange that many physicists at CERN are keen to shut the whole thing down for a 20-mo... | <urn:uuid:bcbca832-f674-4f06-a09e-0b90f1c36023> | 2.671875 | 241 | News Article | Science & Tech. | 51.176 | 2,805 |
In what has become an annual tradition here at BA Central, literally the day I post my gallery of best pictures of the year, something comes along that really would’ve made it in had I seen it even a few hours earlier. In this case, it’s a combined Chandra X-Ray Observatory and optical Very Large Telescope image of gal... | <urn:uuid:1be9cb51-382c-4537-8104-9421c7a76f04> | 3.09375 | 1,627 | Personal Blog | Science & Tech. | 57.467139 | 2,806 |
February 18, 2013
The Northeast may be prone to blizzards this time of year, but in Brazil it’s raining spiders. In a video that’s covered the Internet like an immense web, a local photographer captures images of thousands of spiders shimmying up and down silk threads attached to telephone pole wires. The footage gives... | <urn:uuid:27db4042-4c0b-4b66-aab7-dfdf0877c743> | 2.75 | 724 | News Article | Science & Tech. | 47.596025 | 2,807 |
December 7, 2012 3:32 pm
Humans navigate the world predominantly by sight. And yet there are colors and worlds we cannot see. Infrared light—light whose wavelength is longer than our eyes can detect—exists all around us. But we do not see it. Yet. Scientists have engineered some proteins to “see” infrared. New Scientis... | <urn:uuid:2d3c78a3-b42a-4b7d-b68f-11babb12c2ea> | 3.8125 | 546 | News Article | Science & Tech. | 52.091817 | 2,808 |
Invasive Marine Species
Invasive species are animals and plants that hitchhike or ride along to places where they are not normally found. In their new homes, invasive species can sometimes create big problems for native species and ecosystems.
The main source of marine invasive species is the global shipping industry, ... | <urn:uuid:87fb6a46-5134-43d4-9e9e-5c22a492f723> | 3.640625 | 658 | Knowledge Article | Science & Tech. | 34.304352 | 2,809 |
String objects represent character strings in Cocoa frameworks. Representing strings as objects allows you to use strings wherever you use other objects. It also provides the benefits of encapsulation, so that string objects can use whatever encoding and storage is needed for efficiency while simply appearing as arrays... | <urn:uuid:f55ac38e-8ef9-475b-9301-07be7d75d6ef> | 3.765625 | 384 | Documentation | Software Dev. | 51.248714 | 2,810 |
About Threaded Programming
For many years, maximum computer performance was limited largely by the speed of a single microprocessor at the heart of the computer. As the speed of individual processors started reaching their practical limits, however, chip makers switched to multicore designs, giving the computer the opp... | <urn:uuid:6263c34c-eb3a-493d-b241-755aa1ec2937> | 4.1875 | 5,448 | Documentation | Software Dev. | 35.366946 | 2,811 |
Related press release
Reconstructing the climate of the past is an important tool for scientists to better understand and predict future climate changes that are the result of the present-day global warming. Although there is still little known about the Earth's tropical and subtropical regions, these regions are thoug... | <urn:uuid:debec1e6-0005-4c75-bd04-27a441c62ac3> | 4 | 530 | News (Org.) | Science & Tech. | 28.884143 | 2,812 |
Research output: Contribution to journal › Scientific review
Climate change is predicted to become a major threat to biodiversity in the 21st century, but accurate predictions and effective solutions have proved difficult to formulate. Alarming predictions have come from a rather narrow methodological base, but a new, ... | <urn:uuid:770efb22-8b86-4757-881d-e8320e59509f> | 3.015625 | 188 | Academic Writing | Science & Tech. | -22.163105 | 2,813 |
Multiple adjacent string literals (delimited by whitespace), possibly using different quoting conventions, are allowed, and their meaning is the same as their concatenation. Thus, "hello" 'world' is equivalent to "helloworld". This feature can be used to reduce the number of backslashes needed, to split long strings co... | <urn:uuid:fd6c9fe4-3919-4ac9-953f-bb4f3601ab09> | 2.984375 | 190 | Documentation | Software Dev. | 29.348367 | 2,814 |
This document is placed in the public domain.
This document can be considered a companion to the tutorial. It shows how to use Python, and even more importantly, how not to use Python.
While Python has relatively few gotchas compared to other languages, it still has some constructs which are only useful in corner cases... | <urn:uuid:a0a48269-0a94-4457-bd5c-8c1e5bc2bc8d> | 3.515625 | 1,851 | Documentation | Software Dev. | 57.881116 | 2,815 |
Scintillation is a flash of light produced in a transparent material by the passage of a particle (an electron, an alpha particle, an ion, or a high-energy photon). See scintillator and scintillation counter for practical applications.
The process of scintillation is one of luminescence whereby light of a characteristi... | <urn:uuid:2ef9d15d-3620-4a47-aa19-f9b0438497e8> | 4.21875 | 855 | Knowledge Article | Science & Tech. | 34.593907 | 2,816 |
I have a good understanding of the system objects available to protect the counter variable above. This example comes from a larger system. Adding one line of code, would take months to rebuild, retest, redeploy.
In a finite system such as computer programming, I am trying not to assume anything. I am trying to figure ... | <urn:uuid:d11862fe-6c3c-4b82-95e0-e817547c97d0> | 2.546875 | 1,833 | Comment Section | Software Dev. | 52.795906 | 2,817 |
As I report today in The Times, the South Asian monsoon is critical to sustaining plants, animals and 1.6 billion people on the subcontinent. When it brings too little rain between June and October, shortages of food and drinking water can develop. When its bounty is too great, floods can displace millions and cause hu... | <urn:uuid:530a2888-c9f8-4e40-83f5-f565ba8e0fcb> | 4 | 1,251 | Q&A Forum | Science & Tech. | 40.340164 | 2,818 |
When things start heating up in our solar system, we get all in a tizzy over the possibility that cell phone reception might be interrupted, but we can now call these minor inconveniences “third planet problems” in light of new information from Hubble.
Astronomers have found a gas giant, 60 light years away from Earth,... | <urn:uuid:0abed999-36dc-4818-acdb-00fd50d8e3af> | 2.953125 | 287 | News Article | Science & Tech. | 35.636104 | 2,819 |
Reflection: mirror, mirror on the wall
Reflection of light is how we ‘see’ things at all, regardless of color. Light waves from the sun--which, as it emanates its own light, is known as a luminous source—are reflected by all the objects in their path. All objects, that is, except those that allow light to pass through ... | <urn:uuid:21060c99-b1b1-40d6-946d-f3b716072331> | 3.4375 | 1,184 | Tutorial | Science & Tech. | 63.255167 | 2,820 |
Quick math question again.
How can I find the power equation of a number such as 2.2107392 × 10^-7. Which equals .6^30?
I'm sure many have asked, sorry if i didn't search the forums properly.
Show me how i can enter a long decimal point into the calculator and then have the calculator output an equation and I would lov... | <urn:uuid:484101dc-f685-4a55-b478-843b0ba5ee6e> | 2.59375 | 329 | Comment Section | Science & Tech. | 91.074124 | 2,821 |
Picking up where Lesson two left off, this new installment of ASP.NET From Scratch covers more C# programming fundamentals – namely class inheritance and interfaces. In this lesson, you’ll learn how to use inheritance to save time and code. You’ll also learn about the concept of interfaces, and how they can make your a... | <urn:uuid:e753395e-c8e5-4f42-a532-5901ba58da56> | 2.671875 | 159 | Truncated | Software Dev. | 47.73 | 2,822 |
Researchers at the Monash University, and the Commonwealth Scientific and Industrial Research Organization (CSRIO) in Australia have discovered a brand new material that can be used to efficiently capture, store, and release carbon dioxide emissions using sunlight.
The discovered material is a photosensitive metal orga... | <urn:uuid:dda3e45f-ab2e-4495-b028-e46657bb00ca> | 3.65625 | 279 | News Article | Science & Tech. | 31.06 | 2,823 |
Like any law-abiding train passenger, a molecule called oskar RNA carries a stamped ticket detailing its destination and form of transport, scientists at the European Molecular Biology Laboratory (EMBL) in Heidelberg, Germany, have found. They show that for this molecule, moving in the right direction isn't enough: spe... | <urn:uuid:cdffbec0-fe38-44f3-9d14-c1cac345b8b3> | 3.171875 | 548 | News Article | Science & Tech. | 38.291719 | 2,824 |
July 23, 2010
A happy number is defined by the following process. Starting with any positive integer, replace the number by the sum of the squares of its digits, and repeat the process until the number equals 1 (where it will stay), or it loops endlessly in a cycle which does not include 1. Those numbers for which this... | <urn:uuid:371f1c28-76bf-45ac-854d-fe0f4d54d3cb> | 3.265625 | 380 | Tutorial | Software Dev. | 84.30109 | 2,825 |
Researchers have discovered that dolphins might be able to learn a new language! Four captive bottlenose dolphins in Port-Saint-Pere, France have repeatedly heard recorded whale sounds during their various performances at the aquatic park. When researchers recorded the dolphins talking in their sleep, they found that t... | <urn:uuid:aed4b6f4-09cc-4a4b-a4bb-00759d9d29cf> | 3.34375 | 125 | News Article | Science & Tech. | 40.685 | 2,826 |
|Spend the time||outdoors|
|Location||California United States|
An ant collecting kit provided by the Naturalist Center at the California Academy of Sciences.
Bay Area Ant Survey
The Bay Area Ant Survey is a citizen science program that gives the public a chance to participate in research by obtaining baseline data for... | <urn:uuid:643c8f0c-89c0-42e9-897a-959788646fc6> | 3.0625 | 180 | Product Page | Science & Tech. | 19.833 | 2,827 |
New sunspot 1302 has already produced two X-flares, an X1.4 on Sept. 22nd and X1.9 on Sept. 24th, quickly followed by a strong M7. All three produced CMEs, none of which were Earth directed, but do involved glancing blows, at least. In a few days any CMEs it produces WILL be earth directed.
1302 is huge, with an active... | <urn:uuid:405fe578-08c2-4946-b7c1-a62e679a7be7> | 2.953125 | 193 | News (Org.) | Science & Tech. | 74.834348 | 2,828 |
Green Plant Phylogeny Research Coordination Group
A five-year effort to reconstruct the evolutionary relationships among all green
plants has resulted in the most complete "tree of life" of any group of living things on the planet,
The up-to-date family tree
has revealed several surprises about the evolution of green p... | <urn:uuid:8cc73825-6041-40f9-9c6c-0f508fe39d07> | 3.328125 | 1,009 | Content Listing | Science & Tech. | 19.086897 | 2,829 |
Authors: H.-J. Hochecker
I stick metal foil on an a 1 square meter large and 10 kilograms heavy dielectric so that a condenser is build. By putting a tension of 10 kV on the condenser or by short-circuiting it I measure a real reduction of the weight of about 0.1 grams each time. This result confirms my theoretical con... | <urn:uuid:28adcd1f-65ca-41a8-bcb6-bafb5c270602> | 2.8125 | 146 | Academic Writing | Science & Tech. | 64.275 | 2,830 |
Neurons that can multitask greatly enhance the brain’s computational power, study finds.
A new program to develop computational models of how marine microbes live and evolve in the global ocean has been launched with a $3.7 million gift from the Gordon and Betty Moore Foundation.
The program is important because it wil... | <urn:uuid:d494b2cb-de1e-4cc6-b96e-736433b9cf18> | 2.921875 | 827 | News (Org.) | Science & Tech. | 11.9455 | 2,831 |
Dinosaurs took their time rising to the top
The ascent of the dinosaurs to the throne of the animal kingdom may have been more gradual than previously believed, scientists say.
Fossil discoveries dating from about 215 million years ago show some of the earliest dinosaurs lived for millions of years side-by-side with re... | <urn:uuid:11f909ea-f86e-42e0-885d-5a0c5aa35625> | 3.875 | 690 | News Article | Science & Tech. | 33.825316 | 2,832 |
What are stem cells?
Do you know the difference between an embryonic stem cell and an adult stem cell? Dr Karl dissects the controversial world of stem cell science.
Stem cells — George W Bush didn't seem to like them. In fact, during the eight years he was "leader of the Free World", George Bush Jr worked very hard to... | <urn:uuid:e1b251ef-7a61-453b-b6b5-7fc705e26c3c> | 3.296875 | 1,027 | Truncated | Science & Tech. | 62.946651 | 2,833 |
Have no fear, Perl and cgi is effectively the same thing.
CGI stands for Common Gateway Interface. CGI is not a programming/scripting language, it is an Interface between a program and a web server.
Perl is a scripting language. Perl is used for *many* non-web related functions, and is not necessarily intended for use ... | <urn:uuid:bdfe48f8-b5e3-476d-b646-72ae983741f6> | 2.53125 | 135 | Comment Section | Software Dev. | 71.005923 | 2,834 |
Discovery of a New Particle at 125 GeV: Physics, Technology and Cyberinfrastructure
Harvey B Newman [*]
High energy physics experiments at the Large Hadron Collider (LHC) have begun to explore the fundamental properties of the forces and symmetries of nature, and the particles that compose the universe in a new energy ... | <urn:uuid:2b95a2a6-1d0a-4e57-b3c5-d50f21d45827> | 3.0625 | 1,879 | News (Org.) | Science & Tech. | 16.305496 | 2,835 |
Tests of general relativity are difficult to come by. The curvature of space time that is central to the theory is only strong around black holes and neutron stars. Around the Sun, the effects of space-time curvature are of order GM/Rc2 = 2 × 10−6 or less, where G is the gravitational constant, M is the mass of the bin... | <urn:uuid:83781076-b08e-4021-b5d3-2335313262bf> | 3.984375 | 1,203 | Knowledge Article | Science & Tech. | 42.944771 | 2,836 |
School: SANTA FE SCHOOL FOR THE ARTS
Area of Science: Ecology
Abstract: Problem: How the breeding cycle of the Leatherback Sea Turtle is affected by natural and human causes. The Leatherback is an endangered species due to poaching and nesting habitat destruction. By modeling these affects we hope to gain information t... | <urn:uuid:70ec3d67-1f92-465c-8759-ae04e9d3c693> | 3.1875 | 83 | Academic Writing | Science & Tech. | 34.532273 | 2,837 |
|Rating the Size of Earthquakes|
This report describes how the work of K. Wadati, Charles F. Richter, Harry O. Wood, and Beno Gutenberg resulted in a way of rating earthquakes in southern California according to an instrumental analysis of the amount of energy they released in the form of seismic waves. This work resul... | <urn:uuid:dc64eead-cc58-4b63-ad0e-7ea024cf0302> | 3.96875 | 257 | Content Listing | Science & Tech. | 17.8325 | 2,838 |
In light of the recent post on the need for open-source sensing arising from nanotech-based environmental monitoring, it is interesting to note this recent progress in building a nanotech-powered biosensor powered by molecular motors. From the University of Florida, via AAAS EurekAlert “Molecular forklifts overcome obs... | <urn:uuid:776cfb6a-0d9e-4fc3-b4e5-a1363460518a> | 3.546875 | 1,059 | News Article | Science & Tech. | 36.289672 | 2,839 |
Forest Pests: Insects, Diseases & Other Damage Agents
Identification of Gypsy Moth Larval Color Forms
United States Department of Agriculture
Since 1991, Asian gypsy moths (AGM) have been introduced into North America on commercial and military vessels and their cargo, from the Far East and more recently from Europe. A... | <urn:uuid:9e007b0a-09fb-4a9b-8b23-8d713f0e167d> | 3.265625 | 749 | Knowledge Article | Science & Tech. | 49.2241 | 2,840 |
An international team led by Dr Amy Baco-Taylor, from the Woods Hole Oceanographic Institution (WHOI) in Massachusetts (USA) and Dr Ashley Rowden from the New Zealand’s National Institute of Water & Atmospheric Research (NIWA), have observed, for the first time, the bizarre deep-sea communities living around methane se... | <urn:uuid:5e361549-b6f8-4cda-98f9-1477073492cb> | 3.65625 | 393 | News (Org.) | Science & Tech. | 35.287884 | 2,841 |
Table of Contents
If you find this EDG documentation helpful please consider DONATING! to keep the doc alive and current.
Flexibility in large component based systems raise questions on how to organize a project for easy development and maintenance while protecting your data and reputation, especially from new develope... | <urn:uuid:18854b93-8826-43ce-96ab-863d31141af0> | 3.484375 | 1,637 | Documentation | Software Dev. | 44.001496 | 2,842 |
Evolution, often perceived as a series of random changes, might in fact be driven by a simple and repeated genetic solution to an environmental pressure that a broad range of specieshappen to share, according to new research.
Princeton University research published in the journal Science suggests that knowledge of a sp... | <urn:uuid:da63ab98-2992-4249-bf92-259283ba9137> | 3.921875 | 1,716 | News Article | Science & Tech. | 16.994872 | 2,843 |
Incredible Facts: Record-Breaking 2011 Tornado Season
Update 3:05 p.m. EDT: The death toll from the southern storms is now at least 250, reported the Associated Press.
Last night, more than 100 reported tornadoes may have claimed 200 or more lives in Dixie Alley. The historic tornado outbreak contributes to what is lik... | <urn:uuid:7eb034ce-4c2b-4483-b4a6-295aea2bcbeb> | 3.03125 | 1,328 | News Article | Science & Tech. | 50.301456 | 2,844 |
of what used to be called Pelvetia, now
Silvetia compressa (J. Agardh)
Serrão, Cho, Boo et
Silvetia compressa grows primarily in the Northern Hemisphere on the west coast from Coos Bay, Oregon to Lower California (Ensenada.) It is found either isolated or in aggregations forming thick beds on top of somewhat protected ... | <urn:uuid:23bd0172-e2ba-4619-838c-842570ce357c> | 3.65625 | 689 | Knowledge Article | Science & Tech. | 39.381741 | 2,845 |
View your list of saved words. (You can log in using Facebook.)
Copepods (Temora)—Douglas P. Wilson
Any of the 10,000 known species of crustaceans in the subclass Copepoda. Copepods are widely distributed and ecologically important, serving as food for many species of fish. Most species are free-living marine forms, fo... | <urn:uuid:bab50d6d-98da-4159-8be5-2ed3df370fa2> | 3.6875 | 238 | Knowledge Article | Science & Tech. | 58.605902 | 2,846 |
Giant squid filmed alive in its natural habitat for the first time [Video]
Giant squid, massive deep sea predators that can grow to 50 feet in length, have never been filmed alive in their natural habitat. (That is, until now.)
Wed, Jan 09 2013 at 3:01 AM
Photo: Screen grab from NHK/Discovery Channel video
The giant sq... | <urn:uuid:2c07ef52-5a4e-4dbf-a4ce-094b85c0960b> | 3.265625 | 678 | News Article | Science & Tech. | 53.331376 | 2,847 |
Producing living young, and not external eggs, is a form of birth that could date back to 280 million years ago or even earlier, a new study suggests.
Called viviparity, this form of birth is used by humans, but clearly we were far from being the first to evolve it.
The study, published in the December issue of Histori... | <urn:uuid:0fe4618c-02ce-410d-b45c-0ef26e8a9f37> | 4 | 846 | News Article | Science & Tech. | 24.311499 | 2,848 |
FEELING a little dull? Follow the lead of flamingos, which apply make-up to brighten their feathers. This touch-up allows the healthiest birds to continue looking their best, and so helps them signal their status as high-quality mates.
The bright pink colour of flamingos comes from pigments called carotenoids, which th... | <urn:uuid:6b8ca984-34cb-4c64-b895-823b193234eb> | 3.296875 | 228 | Truncated | Science & Tech. | 53.952845 | 2,849 |
Calculating Quantum Vacuum Forces in Nanostructures
February 7, 2013
Contact: Vladimir Aksyuk
One of the surprising predictions of quantum mechanics is that uncharged conductors can attract each other over small distances, even in empty space. While the resulting “Casimir force” has been accurately measured and calcula... | <urn:uuid:9d0e4e10-e26d-4af2-9287-8e3216de40bc> | 2.984375 | 363 | Academic Writing | Science & Tech. | -8.568333 | 2,850 |
Coming Soon: Tabletop Molecular Movies
November 5, 2012
Contact: Joel Ullom
One of the most urgently sought-after goals in modern science is the ability to observe the detailed dynamics of chemical reactions as they happen – that is, on the spatial scale of molecules, atoms, and electrons, and on the time scale of pico... | <urn:uuid:de7b508c-2788-4eca-a118-4380e2e2b9e3> | 2.609375 | 1,570 | News (Org.) | Science & Tech. | 39.989604 | 2,851 |
- About PSI
- Corporate Sponsors
A color image draped onto digital topography shows McLaughlin Crater in a 3-D perspective, looking toward the east. On the floor of the crater are light-toned sedimentary deposits that contain alteration minerals. Overlying those layered rocks are debris flows that may have been generat... | <urn:uuid:4f8b691b-b4b1-4496-93da-ec82eb7746f7> | 3.421875 | 196 | News (Org.) | Science & Tech. | 14.3825 | 2,852 |
NASA Study Finds Hurricane Strength Forecasts Could Be Improved
NASA Jet Propulsion Laboratory
Forecasters could soon be better able to predict how intense tropical cyclones like Hurricane Sandy will be by analyzing relative-humidity levels within their large-scale environments, finds a new NASA-led study.
Scientists f... | <urn:uuid:706c230d-7dd6-4553-9760-342174db7821> | 2.984375 | 1,030 | News Article | Science & Tech. | 26.926077 | 2,853 |
Deepwater and shallow water coral reef communities are rich in diversity and provide habitat for many species. Shallow water coral reef systems have been well-studied partly due to their accessibility. Deepwater corals and associated habitats can only be studied with technologically advanced methods such as manned subm... | <urn:uuid:7034a33a-ea12-41c0-a531-35a250e75c52> | 3.875 | 445 | Knowledge Article | Science & Tech. | 27.229947 | 2,854 |
Revista chilena de historia natural
versión impresa ISSN 0716-078X
MORALES, MARIANO S. et al. Potential of Prosopis ferox Griseb (Leguminosae, subfamily: Mimosoideae) for dendrochronological studies in high-montane subtropical deserts. Rev. chil. hist. nat. [online]. 2001, vol.74, n.4, pp. 865-872. ISSN 0716-078X. doi:... | <urn:uuid:7104ab24-1a07-44d2-9669-b6c94e50c489> | 2.578125 | 508 | Academic Writing | Science & Tech. | 37.504219 | 2,855 |
July 19, 2011 Biomolecular imaging can reveal a great deal of information about the inner workings of cells and one of the most attractive targets for imaging are glycans -- sugars that are ubiquitous to living organisms and abundant on cell surfaces. Imaging a glycan requires that it be tagged or labeled. One of the b... | <urn:uuid:4c86e1d6-d1ea-4b09-85f3-a1c1e968daaa> | 3.0625 | 1,133 | News (Org.) | Science & Tech. | 15.997728 | 2,856 |
Shipping, oil hunt may accelerate Arctic thaw
Local pollution in the Arctic from shipping and oil and gas industries, which have expanded in the region due to a thawing of sea ice caused by global warming, could further accelerate that thaw, experts say.
The United Nations Environment Programme (UNEP) said there was an... | <urn:uuid:6011562e-b0c1-4c4a-9d7f-cfe77414bde7> | 2.953125 | 878 | News Article | Science & Tech. | 57.606635 | 2,857 |
Champaign, Ill. -- Scientists worry that a rapidly reproducing, tiny invasive snail recently found in Lake Michigan could hurt the lake's ecosystem.
The New Zealand mud snail joins a long and growing list of nonnative species moving into the Great Lakes, threatening to disrupt the food chain and change the local enviro... | <urn:uuid:3dd28177-bae7-49c1-808e-420e5c4ff411> | 3.125 | 775 | News Article | Science & Tech. | 49.033892 | 2,858 |
Riding the atomic waves: with the magic of quantum mechanics, an atom goes two ways at once.Physicists have added a new trick to their experimental repertoire. In their latest feat, called atom interforometry, they paradoxically divide and recombine re·com·bine
To undergo or cause genetic recombination; form new combin... | <urn:uuid:30fc437f-f6d3-4a6d-a83f-404a87326608> | 3.265625 | 2,914 | Truncated | Science & Tech. | 33.906857 | 2,859 |
Ecology, Environment and Conservation Business
Welcome to VerticalNews!
We're a pay-per-view site for premium content. If you'd like to purchase this article, it's only $3.00.
Natural Resource Modeling
New natural resource modeling study findings recently were published by researchers at University of Foggia
March 13th... | <urn:uuid:0a5a69bf-2a5a-440b-a483-52adb21eeed3> | 2.578125 | 233 | Truncated | Science & Tech. | 30.527955 | 2,860 |
Effective nuclear charge (Clementi) - 3d
nuclear charge units
Consider the third electron in a lithium atom. It is affected by the charge on the nucleus (+3). However it is also repelled by the charge on the inner two electrons. Electrons in the 1s orbital are much closer to the nucleus than any electrons in the 2s or ... | <urn:uuid:17714806-3d2b-4207-91c8-0a2933448e29> | 3.890625 | 240 | Knowledge Article | Science & Tech. | 45.390411 | 2,861 |
The water cycle
Click on image for full size
Copyright University Corporation for Atmospheric Research
Earth's Water Cycle
Water is always on the move. Rain falling where you live may have been water in the ocean just days before. And the water you see in a river or stream may have been snow on a high mountaintop.
Wate... | <urn:uuid:9f33d5bf-c1ba-459c-afc5-c4167f75180b> | 3.90625 | 743 | Knowledge Article | Science & Tech. | 57.498688 | 2,862 |
Decades make great sales tools. Kennedy used a decade timeframe to sell American on the moon in 1961. Robert Zubrin recently tried the same pitch and called for a manned mission to Mars by the end of a decade (Zubrin’s been pitching a decade-long manned Mars program since the 1980s to no avail). A decade is a nice roun... | <urn:uuid:213327ef-23eb-4d7e-9aeb-48d078f3df10> | 3.15625 | 2,380 | Nonfiction Writing | Science & Tech. | 50.960915 | 2,863 |
What exactly are microbes? Bacteria, animal-like protozoans and single celled fungi make the list but what about viruses? Are all microbes alive? There's no question about bacteria and the microscopic organisms in pond water but viruses aren't even made of cells. They are merely bits of genetic material (RNA or DNA) wr... | <urn:uuid:67f4f972-6b6c-42a3-924a-0db0e1219edf> | 3.578125 | 539 | News Article | Science & Tech. | 34.861224 | 2,864 |
Rising temperatures and high carbon dioxide emissions are the means through which humans are inadvertently causing the decline of several species. But one animal actively uses both heat and carbon dioxide as murderous weapons – the unassuming honeybee.
With their stings and numbers, bees already seem to be well-defende... | <urn:uuid:dbd3217b-20b6-431f-bba6-9a5259848e5f> | 3.109375 | 694 | Personal Blog | Science & Tech. | 48.53319 | 2,865 |
This month’s picturing science image, from University Research Fellow Dr Hugh Tuffen, is just four millimeters across. It shows the remarkable microscopic textures within obsidian, or volcanic glass, formed in an Icelandic eruption twenty-five thousand years ago. Obsidian forms from cooling of magma with a high silica ... | <urn:uuid:f839fff2-7d01-45c8-bcc9-373ce800d830> | 4.15625 | 349 | Knowledge Article | Science & Tech. | 36.545948 | 2,866 |
The ocamldep command scans a set of OCaml source files (.ml and .mli files) for references to external compilation units, and outputs dependency lines in a format suitable for the make utility. This ensures that make will compile the source files in the correct order, and recompile those files that need to when a sourc... | <urn:uuid:0f35a136-6d49-4a1d-b732-e89bbe7380a0> | 2.75 | 685 | Documentation | Software Dev. | 49.463105 | 2,867 |
PROBLEMS FOR NOVEMBER
Please send your solution to
Ms. Valeria Pandelieva
641 Kirkwood Avenue
Ottawa, ON K1Z 5X5
It is very important that the front page contain your
complete mailing address and your email address. The deadline
for this set is December 21, 2002.
Notes: The sides of a right-angled triangle that are adj... | <urn:uuid:3edda3ec-3b77-458e-b055-7fdebdeeb8b0> | 3.015625 | 1,121 | Academic Writing | Science & Tech. | 58.982046 | 2,868 |
View Full Version : Neutron Stars have charge...waa?
2008-May-24, 01:54 AM
Pardon me if this has already been asked, but since neutrons don't have charges, how can a neutron star have a magnetic field?
The composition of a neutron star is known only via theory, and theoretical details are not complete. However, a neutr... | <urn:uuid:fb5a9e78-8f60-4663-bd69-0fbed68f077e> | 3.015625 | 176 | Comment Section | Science & Tech. | 63.44 | 2,869 |
Important: This document may not represent best practices for current development. Links to downloads and other resources may no longer be valid.
Building a Universal Binary
Architectural differences between Macintosh computers that use Intel and PowerPC microprocessors can cause existing PowerPC code to behave differe... | <urn:uuid:0b1717df-d65f-42cd-a3b6-249c8f3f992e> | 2.859375 | 3,251 | Documentation | Software Dev. | 44.893312 | 2,870 |
Climate change and Indiana Dunes National Lakeshore
Photo: US EPA
JANRUARY 2011 --The Indiana Dunes National Lakeshore (IDNL) is identified as one the top 25 US National Parks in peril due to climate disruption, according to the Rocky Mountain Climate Organization. On January 27th, 2011 more than 25 researchers, scient... | <urn:uuid:1e604244-1f2e-4fa6-bce8-9f696e9f6dda> | 3.3125 | 185 | News (Org.) | Science & Tech. | 9.012 | 2,871 |
Written By: GLORIA TATUM
With additional reporting by Matthew Cardinale, News Editor
(APN) ATLANTA -- Over the last several months, Atlanta Progressive News and Atlanta residents have been documenting an increase in white lines left from airplanes flying overhead, sometimes covering Atlanta's skies with persistent plan... | <urn:uuid:b5fa6345-9781-4618-acfc-7af1b86d1c8b> | 2.859375 | 2,499 | News Article | Science & Tech. | 28.313096 | 2,872 |
As I stepped out of my front door into the pre-dawn darkness from my home near Ann Arbor, Michigan yesterday morning, I braced myself for the cold shock of a mid-March morning. It didn't come. A warm, murky atmosphere, with temperatures in the upper fifties--30 degrees above normal--greeted me instead. Continuous flash... | <urn:uuid:0099fa1e-77aa-40af-b9fe-9e4c44890490> | 2.609375 | 1,600 | Personal Blog | Science & Tech. | 65.545144 | 2,873 |
Michael Fowler, UVa
The course explores two revolutions in our perception of the universe. The
first, in which Galileo played the leading role, was the realization that what
we see in the heavens—the moon, the planets, the sun and stars—are physical
objects. For example, the moon has a rocky surface, not unlike some pa... | <urn:uuid:b62bf67c-ba9c-41b7-a0dd-5afd07cb58cf> | 3.9375 | 419 | Product Page | Science & Tech. | 40.008333 | 2,874 |
Whether it's the study of coral growth, research on loggerhead sea turtles or the long term monitoring of fish populations, science conducted in Gray's Reef National Marine Sanctuary is intended to help make informed management decisions to ensure adequate protection of sanctuary resources.
The science staff of Gray's ... | <urn:uuid:33b78c1a-0225-4201-8c55-721e55919598> | 3.109375 | 467 | About (Org.) | Science & Tech. | 17.7325 | 2,875 |
Class #11 (Feb. 12) Reading Questions - The Dark Side of the Universe
1. Current observational results constrain to the total matter (plus energy) density of the universe to the range 0.1<Omega<10 where Omega=Mtotal/Mcritical. Explain why this result strongly implies that Omega actually equals exactly one and thus, tha... | <urn:uuid:5a9d025f-972e-4241-87fd-bb5ce24a2833> | 3.390625 | 263 | Q&A Forum | Science & Tech. | 41.789583 | 2,876 |
Until now, the latest and greatest way to sustainable energy was high-altitude wind turbines.
But multiple companies have made serious investments toward delivering solar energy from space within the next decade.
Major U.S. companies are aggressively researching the technology to beam the energy from one big satellite ... | <urn:uuid:66301fde-e70c-4970-9e7c-f01bbf40db98> | 3.046875 | 124 | Comment Section | Science & Tech. | 33.981696 | 2,877 |
See also the
Dr. Math FAQ:
Browse High School Discrete Math
Stars indicate particularly interesting answers or
good places to begin browsing.
Selected answers to common questions:
Four-color map theorem.
How many handshakes?
Squares in a checkerboard.
- Graph Theory [09/29/2001]
Why is a graph with five vertices, each ... | <urn:uuid:ba4e41fe-e2b0-4ab4-b780-81205bbc7a1b> | 3.0625 | 1,844 | Q&A Forum | Science & Tech. | 73.597802 | 2,878 |
The direction flag is a CPU flag specific to Intel 80x86 processors. It applies to all assembly instructions that use the REP (repeat) prefix, such as MOVS, MOVSD, MOVSW, and others. Addresses provided to applicable instructions are increased if the direction flag is cleared.
The C run-time routines assume that the dir... | <urn:uuid:c65ff48a-714c-47fa-bbd9-c2f02e9b360d> | 2.734375 | 163 | Documentation | Software Dev. | 45.199528 | 2,879 |
Gets the collection of controls contained within the control.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
A Control can act as a parent to a collection of controls. For example, when several controls are added to a Form, each of the controls is a member of the Control.ControlCollection assigned to the ... | <urn:uuid:28d81b3e-fca4-46d9-ae8c-d94938c25e45> | 3.046875 | 294 | Documentation | Software Dev. | 50.036667 | 2,880 |
The Medieval Warm Period in Northeast China
Wang, L., Rioual, P., Panizzo, V.N., Lu, H., Gu, Z., Chu, G., Yang, D., Han, J., Liu, J. and Mackay, A.W. 2012. A 1000-yr record of environmental change in NE China indicated by diatom assemblages from maar lake Erlongwan. Quaternary Research 78: 24-34.
Focusing on Lake Erlon... | <urn:uuid:4e71d045-b508-41ce-b787-6bbabce7c2d2> | 2.796875 | 950 | Academic Writing | Science & Tech. | 69.364463 | 2,881 |
The Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) took this image of the Nili Fossae region at 0643 UTC (2:43 a.m. EDT) on June 21, 2007, near 21.15 degrees north latitude, 74.24 degrees east longitude. CRISM's image was taken in 544 colors covering 0.36-3.92 micrometers, and shows features as small as 2... | <urn:uuid:6da7a36b-e587-4861-b511-0bf4a1e04b62> | 3.796875 | 733 | Knowledge Article | Science & Tech. | 44.64751 | 2,882 |
Some high-energy experiments (RHIC, LHC) use ion-ion collisions instead of proton-proton collisions. Although the total center-of-mass energy is indeed higher than p-p collisions, it might happen that the total energy per nucleon is actually lower. What are the advantages of using ion-ion collisions (e.g. gold-gold or ... | <urn:uuid:e169a27d-af4a-46af-ba2f-3cefd4cfff6e> | 3.328125 | 402 | Q&A Forum | Science & Tech. | 57.907806 | 2,883 |
Compiled/interpreted is hardly a meaningful distinction nowadays; IDE's such as Eclipse completely hide away the compile step, interpreted languages are sometimes compiled transparently to improve performance. The really interesting metric is "how much time I need to start my program while developing", really. With tod... | <urn:uuid:ec5b640c-d989-49f9-8742-20cbab922bbb> | 2.796875 | 917 | Q&A Forum | Software Dev. | 37.091763 | 2,884 |
Big Questions for Van Allen Probes
Modern society depends heavily on a variety of technologies that are susceptible to the extremes of space weather — severe disturbances of the upper atmosphere and of the near-Earth space environment that are driven by the magnetic activity of the Sun. Strong electrical currents drive... | <urn:uuid:36288eab-28ac-4411-b8d1-ea3328aec6b5> | 3.234375 | 137 | Knowledge Article | Science & Tech. | 9.126398 | 2,885 |
Map of the cosmic microwave background radiation, c. 2006
This beach ball shows a full-sky map of the microwave radiation left over from the Big Bang—a snapshot of what the early Universe was like, 13.7 billion years ago. Many scientists believe that temperature fluctuations observed in the microwave background are a r... | <urn:uuid:bcb499b7-f1b9-47b8-965c-f69df0789159> | 3.15625 | 120 | Knowledge Article | Science & Tech. | 53.247368 | 2,886 |
NASA has announced that data from the Galileo planetary mission has provided the best evidence yet of what appears to be a body of liquid water (the same volume as the North American Great Lakes) beneath the frozen surface of Jupiter‘s moon, Europa.
The information shows there could be a significant exchange between th... | <urn:uuid:1f2f26c1-458a-40bb-baea-1f8373f7a928> | 3.625 | 457 | News Article | Science & Tech. | 22.083689 | 2,887 |
Learning From the Past:Mass Extinctions and Global Warming with Dr. Peter Ward
Hallo, noble viewers, and welcome to Planet Earth: Our Loving Home. Today we’ll explore the phenomenon of mass extinction, by which large numbers of species cease to exist.
Scientists say that many such events have occurred over the course o... | <urn:uuid:88032f39-280d-4baf-b41b-5461c95d97dd> | 3.296875 | 565 | Audio Transcript | Science & Tech. | 54.676582 | 2,888 |
We have recently started to investigate an unusual mutualistic relationship between a carnivorous pitcher plant and a bat. Known as Nepenthes hemsleyana the pitcher plant occurs in the peatswamp forests of Brunei. Its elongated pitchers provide space to roost for the small woolly bat Kerivoula hardwickii. The bats roos... | <urn:uuid:0679f4b5-ccd8-4690-8b33-d8184811352c> | 3.328125 | 455 | Content Listing | Science & Tech. | 19.180095 | 2,889 |
Science subject and location tags
Articles, documents and multimedia from ABC Science
Wednesday, 6 June 2012
StarStuff Podcast The universe may have almost a third more hydrogen than previously thought. Also; how to weigh an asteroid, and Dragon splashes down after its first mission to the International Space Station
M... | <urn:uuid:b78cb6bf-979e-4e9a-8c1a-f0db3566c9ec> | 2.8125 | 619 | Content Listing | Science & Tech. | 51.228797 | 2,890 |
5 posts • Page 1 of 1
[Administrators: feel free to relocate this post at your discretion; with its zoogeographical focus, it could just as aptly lie within the "Evolution" forum.]
Looking to this map of global crayfish distribution, one is immediately struck by what are seemingly several discrepancies - namely, the co... | <urn:uuid:70c57250-fae3-409c-90ba-e5664fb95f98> | 3.078125 | 1,619 | Comment Section | Science & Tech. | 27.719917 | 2,891 |
Inbreeding is breeding between closely related individuals in a population. In humans, close inbreeding is referred to as incest.
Breeding closely related animals allows a breeder to select desired traits and create a population where every individual has those traits. However, sometimes deleterious traits also "hitchh... | <urn:uuid:fc907007-857b-4eef-a4a4-72feb82d58c1> | 3.515625 | 646 | Knowledge Article | Science & Tech. | 17.195365 | 2,892 |
n: The letter "n" when used as a prefix
before a unit symbol indicates a multiplier of 10-9. Abbreviation of "nano".
E.g., nV = 10-9 volt, one nanovolt, one billionth of a volt.
nA: Symbol and abbreviation of nanoampere
(= 10-9 ampere, one billionth of an ampere).
nano: When used as a prefix before a
unit name it indic... | <urn:uuid:de6ae0c5-8442-4fad-bc99-b4a87a1858dd> | 3.390625 | 1,317 | Structured Data | Science & Tech. | 34.695766 | 2,893 |
iPad 2 Brings iOS Developers to Multicore Programming Land
The recently launched iPad 2 includes a 1 GHz dual-core Apple A5 SoC (short for System-on-a-Chip). If you want your iOS apps to take full advantage of this powerful dual-core chip, you have to use multicore programming techniques in these apps. If you code in O... | <urn:uuid:b6ffd7a9-45d4-42ca-b9a6-9469421c8258> | 2.59375 | 873 | News Article | Software Dev. | 47.875258 | 2,894 |
Methyl mercaptanMethyl mercaptan is a colorless gas with a smell like rotten cabbage. It is a natural substance found in the blood, brain, and other tissues of people and animals. It is released from animal feces. It occurs naturally in certain foods, such as some nutss and cheese. The chemical formula for methyl merca... | <urn:uuid:cbe96730-eee3-447f-ae0f-fb926b6c6839> | 3.203125 | 151 | Knowledge Article | Science & Tech. | 49.907818 | 2,895 |
ALBATROSS is an acronym for Antarctic Largescale Box Analysis and the Role Of the Scotia Sea, a cruise along the rim of the Scotia Sea that took place from March 15 to April 23, 1999 on the RRS James Clark Ross.
|This article is written at a definitional level only. Authors wishing to expand this entry are inivited to ... | <urn:uuid:9feadb08-30c2-4245-a69d-7168e6ae6e0e> | 3.625 | 382 | Knowledge Article | Science & Tech. | 3.516099 | 2,896 |
Press contact: Kurt Riesselmann, Fermilab Public Affairs, 630-840-3351, email@example.com
Photos are available at http://www.fnal.gov/pub/presspass/press_releases/auger_photos/index.html
World's largest air shower array now on track of super-high-energy cosmic-rays
Pierre Auger Observatory seeks source of highest-energ... | <urn:uuid:1c404822-8d61-472c-83e7-31cf85700482> | 2.703125 | 1,113 | News (Org.) | Science & Tech. | 33.830916 | 2,897 |
Dutch scientists have demonstrated controlling the motion of an atomic scale mechanical device, although whether more complex nanotech devices could be controlled by the mechanism at work here remains to be seen. Upon exposure to electrons from an STM tip, pairs of platinum atoms on a germanium surface can be made to p... | <urn:uuid:0a4859af-3f94-40c1-bd22-4bf127bd5572> | 3.3125 | 406 | News Article | Science & Tech. | 23.746048 | 2,898 |
so i was reading the article about primitive data types and i came across litterals. so i understand the uses of the 8 primative types but i dont understand why you would do this below
float pi = 3.1415F;
long pi2 = 3141L;
does adding the extra 'F' / 'L' onto the value do anything ? i have been struggling to find infom... | <urn:uuid:31630c68-228a-4ecb-9f1d-5bd917816ca7> | 3.3125 | 149 | Q&A Forum | Software Dev. | 70.257143 | 2,899 |