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Are aphid parasitoids locally adapted to the prevalence of defensive symbionts in their hosts?
- Journal Article
Rights / licenseCreative Commons Attribution 4.0 International
Background Insect parasitoids are under strong selection to overcome their hosts’ defences. In aphids, resistance to parasitoids is largely dete... | <urn:uuid:6d2144b6-4e3b-4c45-86d4-1822e776496a> | 2.734375 | 710 | Academic Writing | Science & Tech. | 15.21875 | 95,608,888 |
In the rapidly growing field of synthetic biology, in which organisms can be engineered to do things like decompose plastic and manufacture biofuels and medicines, production of custom DNA sequences is a fundamental tool for scientific discovery. Yet the process of DNA synthesis, which has remained virtually unchanged ... | <urn:uuid:ca760be3-4033-4bfa-bc1d-75e6136165c0> | 3.78125 | 2,332 | Content Listing | Science & Tech. | 48.190574 | 95,608,900 |
22 June 2005
Why your brain has a Jennifer Aniston cell’
Obsessed with reruns of the TV sitcom Friends? Well then you probably have at least one “Jennifer Aniston cell” in your brain, suggests research on the activity patterns of single neurons in memory-linked areas of the brain. The results point to a decades-old and... | <urn:uuid:6bbf23c4-a01b-41b6-88f4-ad668f531ffb> | 2.859375 | 897 | Truncated | Science & Tech. | 41.535151 | 95,608,913 |
While the Earth is home to many different weather systems, the most extreme terrestrial conditions are mild compared to weather on other planets. All of the other bodies in the solar system large enough to maintain an atmosphere have their own weather systems, ranging from Earthlike to almost unimaginable. Humanity’s e... | <urn:uuid:2e7e850a-d2cc-423f-9def-f5605839656d> | 4.375 | 545 | Knowledge Article | Science & Tech. | 33.864872 | 95,608,933 |
Such is the case for a team of Whitehead Institute scientists, whose latest research on the evolution of the human Y chromosome confirms that the Y—despite arguments to the contrary—has a long, healthy future ahead of it.
Proponents of the so-called rotting Y theory have been predicting the eventual extinction of the Y... | <urn:uuid:4f1d8f79-3e0b-4f95-9df9-00b1fc46bf2b> | 3.21875 | 1,876 | Content Listing | Science & Tech. | 45.166831 | 95,608,935 |
I was going to write a simple little program for me and a friend to make secret coded messages and I have an idea in my head but I'm not sure how to execute it.
To make it simple I have a number code: 1 0 5 1 9 8 6
The idea is when you write the code you take the letters and push them forward acording to the numbers an... | <urn:uuid:8cc8940a-bd6e-4415-b5d3-3796c29a88cf> | 2.71875 | 430 | Comment Section | Software Dev. | 33.506343 | 95,608,956 |
This unusual event is allowing astronomers to probe for even fainter objects and may give them a glimpse of matter disappearing into the massive black hole at the centre of our galaxy.
The Galactic centre is one of the most dynamic places in our Galaxy. It is thought to be home to a gigantic black hole, called Sagittar... | <urn:uuid:e2d4ea8f-dd23-4241-93c5-b3c0fe40618b> | 3.71875 | 1,209 | Content Listing | Science & Tech. | 40.814982 | 95,608,976 |
posted by Niles
Three gases (8.00 g of methane, CH4, 18.0 g of ethane, C2H6, and an unknown amount of propane, C3H8) were added to the same 10.0-L container. At 23.0 ∘C, the total pressure in the container is 4.40 atm . Calculate the partial pressure of each gas in the container.
Express the pressure values numerically... | <urn:uuid:253c0774-0fc0-4eec-9402-0f02d85510ba> | 2.796875 | 149 | Tutorial | Science & Tech. | 72.83475 | 95,608,977 |
Water shortages are anticipated to occur all over the world and are likely to have a significant effect on the availability of water for water splitting processes, such as photocatalysis and electrolysis, as well as for drinking and industrial water. To overcome this problem, it has been suggested that seawater could b... | <urn:uuid:7e0b4483-eeb7-48e8-bcdd-9badafd36c6c> | 2.8125 | 360 | Academic Writing | Science & Tech. | 10.472216 | 95,608,978 |
A protein that transports the simple chemical choline plays a major role in vesicle trafficking, ion homeostasis, and growth and development in plants, according to two new studies publishing 28 December in the open-access journal PLOS Biology, by Dai-Yin Chao of the Shanghai Institutes for Biological Sciences, China, ... | <urn:uuid:8f2f2a49-da01-469f-82fd-dfe557146682> | 2.515625 | 657 | News Article | Science & Tech. | 21.128406 | 95,608,982 |
Offshore Wind Turbine May Have Killed Young Whale
The carcass of a young humpback whale washed ashore Friday morning in Rhode Island, causing experts to think that a nearby offshore wind turbine may be to blame.
Rescue workers and two veterinarians from a nearby aquarium collected samples from the dead whale, and suspe... | <urn:uuid:86b47b86-11b8-4dca-aa81-89c5c416af0f> | 2.578125 | 786 | Truncated | Science & Tech. | 36.947788 | 95,609,000 |
Wednesday, August 17, 2011
The Nine Oribtal Elements
Mean and true planetary longitudes in the Zodiac is computed by Nine Orbital Elements, in Indian Astronomy.
Mean longitude of Planet, Graha Madhyama , M
Daily Motion of the Mean Longitude, Madhyama Dina Gathi, Md
Aphelion, Mandoccha, Ap
Daily Motion of Aphelion, Mand... | <urn:uuid:4f71e63f-6a08-4191-907a-39e0b5b91b77> | 2.953125 | 274 | Personal Blog | Science & Tech. | 3.800747 | 95,609,051 |
Surprise, surprise, Albert Einstein is still right. Over a century since its conception, the general theory of relativity still holds true — even in an extreme three star system many light-years away.
Albert Einstein's travel diaries reveal a different side to the famed physicist. While he’s a celebrated humanitarian l... | <urn:uuid:59ec7e5b-0053-4e9c-8538-6d8371464fd5> | 2.65625 | 469 | Content Listing | Science & Tech. | 40.822414 | 95,609,059 |
A paper describing the work appears in the March issue of The Astrophysical Journal.
The Hubble constant has previously been calculated by using NASA's Hubble Space Telescope to look at distant supernovae, and by measurements of the cosmic microwave background -- radiation leftover from the Big Bang, said Chris Fassnac... | <urn:uuid:23cee0e6-1416-4fd3-b4d8-0e2291680ef8> | 4.03125 | 1,128 | Content Listing | Science & Tech. | 39.046142 | 95,609,079 |
LMU/MPQ-physicists succeed in realizing an analogue of the Meissner effect by measuring edge currents in a ladder-like crystal of light.
When a superconductor is exposed to a magnetic field, a current on its surface appears which creates a counter field that cancels the magnetic field inside the superconductor.
Schemat... | <urn:uuid:1990920f-18ac-44b9-8810-56d8542a40f8> | 3.578125 | 2,052 | Content Listing | Science & Tech. | 38.288921 | 95,609,096 |
Climate change effects are already being felt in Austria: A new report shows how rising temperatures, changing precipitation patterns, and melting glaciers have affected the country and what lies in store for the future.
The Austrian Climate Change Assessment Report (AAR14), released today, is the first national-level ... | <urn:uuid:38a7ed7c-8d43-40d3-81c0-96ac466d8396> | 3.40625 | 1,279 | Content Listing | Science & Tech. | 30.489325 | 95,609,116 |
3 months ago
Scientists have discovered the first hard evidence of a large and ancient protoplanet inside space diamonds that fell to Earth about 10 years ago. The diamonds were embedded inside a small asteroid that hit the atmosphere over the Nubian Desert in northeastern Sudan in October 2008. The diamonds are extrem... | <urn:uuid:0869aa98-8319-4ef6-8156-3439b7b66dd3> | 3.59375 | 229 | News Article | Science & Tech. | 22.536253 | 95,609,184 |
A group of Finnish scientists suggests a new climate-biosphere interaction mechanism for the underlying processes in a new study, which will be published on February 14, 2007 in PLoS ONE, the international, peer-reviewed, open-access, online publication from the Public Library of Science (PLoS).
The theory invokes cold... | <urn:uuid:827576e2-219a-42fe-9024-27e5b7757bb0> | 3.515625 | 973 | Content Listing | Science & Tech. | 31.80223 | 95,609,189 |
Until the 1990s, it was generally accepted that medicines were first developed for adults and their use in children was investigated later, if at all. One of the main tasks of hospital pharmacies was the manufacturing of child-appropriate formulations in a more or less makeshift way. The first change came in 1997 with ... | <urn:uuid:b2a63521-2ad3-40f4-b521-4052bd0c5f02> | 2.734375 | 429 | Knowledge Article | Science & Tech. | 26.529736 | 95,609,198 |
Coupled Neural Networks
Multilayered feed-forward networks (perceptrons) are special cases of the general McCulloch-Pitts neural network with arbitrarily interconnected neurons. On the other hand, any general “recurrent” neural network can be considered to be represente by a feed-forward perceptron, albeit one with pos... | <urn:uuid:7c7c031a-fef4-4505-bd50-97ca183feb69> | 2.828125 | 540 | Truncated | Science & Tech. | 41.651927 | 95,609,200 |
Chlorine-phase Partitioning at Melpitz near Leipzig
Hydrochloric acid (HCl) in the gas phase, chloride, and sodium in particle phase were measured first time with high time-resolution and simultaneously with a number of other atmospheric components (in gas and particulate phase) as well meteorological parameters during... | <urn:uuid:fbf66c38-b587-47be-8d40-92eb93fdd727> | 2.546875 | 294 | Academic Writing | Science & Tech. | 47.759856 | 95,609,214 |
Chemical analysis of ancient rocks reveals earliest record yet of Earth's atmosphere
Chemical analysis of some of the world’s oldest rocks, by an international team led by McGill University researchers, has provided the earliest record yet of Earth's atmosphere. The results show that the air 4 billion years ago was ver... | <urn:uuid:022a3484-5a8d-4cf4-9739-7decda688ce4> | 3.421875 | 1,437 | Content Listing | Science & Tech. | 38.545441 | 95,609,220 |
|Male common side-blotched lizard|
Baird & Girard, 1852
Several, see text
Side-blotched lizards are lizards of the genus Uta. They are some of the most abundant and commonly observed lizards in the deserts of western North America. Their cycle among three colorized breeding patterns has achieved notoriety and is best d... | <urn:uuid:57530245-92d3-4bed-932c-74122d151f93> | 3.15625 | 1,792 | Knowledge Article | Science & Tech. | 44.938585 | 95,609,271 |
Differential Interference Contrast
Wavefront Shear in Wollaston and Nomarski Prisms
Explore how Wollaston and Nomarski prisms act as a beamsplitter to separate or shear a polarized beam of light into two coherent and orthogonal components that pass through and interact with slightly different areas of a specimen in dif... | <urn:uuid:2a8db971-3937-4d3f-bec7-1187d394ee3c> | 2.921875 | 2,650 | Tutorial | Science & Tech. | 24.916823 | 95,609,279 |
Might have Minkowski discovered the cause of gravitation before Einstein?
- Publication Year:
- Usage 197
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- PhilSci-Archive 197
- Repository URL:
- Most Recent Tweet View All Tweets
There are two reasons for asking such an apparently unanswerable question. First, Max Born's recollections of what Minkows... | <urn:uuid:83cfd80b-20d5-4802-9b11-9d797c9adcf9> | 3 | 406 | Academic Writing | Science & Tech. | 0.365811 | 95,609,309 |
It’s the season of mixed precipitation. The spring temperature profile is conducive to an icy mix and the last few systems that rolled by didn’t disappoint.
I was walking to my office during one of those “events” when I overheard a co-worker comment on the freezing rain that was hitting the window.
I knew right away th... | <urn:uuid:eaecf626-76ad-4ab0-a9d8-d3062c36a925> | 2.609375 | 308 | Personal Blog | Science & Tech. | 63.300955 | 95,609,316 |
Techniques for detecting X-rays and gamma-rays Pair production Creation of elementary particle and its antiparticle from a photon. Occurs only if enough.
Published byModified over 3 years ago
Presentation on theme: "Techniques for detecting X-rays and gamma-rays Pair production Creation of elementary particle and its a... | <urn:uuid:65376746-b4a5-40d1-90ad-4d54c1edbb0e> | 3.90625 | 1,533 | Truncated | Science & Tech. | 36.023561 | 95,609,330 |
Personal computers have made life convenient in many ways, but what about their impacts on the environment due to production, use and disposal? Manufacturing computers requires prodigious quantities of fossil fuels, toxic chemicals and water. Rapid improvements in performance mean we often buy a new machine every 1-3 y... | <urn:uuid:b2ab4ba2-e70b-4de3-92fe-c64aeb130858> | 2.984375 | 221 | Product Page | Science & Tech. | 33.683846 | 95,609,333 |
The new technique provides a detailed look into processes that until now were proven but never visualized. The more detailed view of DNA being made into RNA in a single cell will help answer questions about how much of a gene is made over time and how much that level varies from cell to cell. Insight into how genes wor... | <urn:uuid:a19babc4-d006-4ccc-bc1e-5f51808a1e77> | 3.78125 | 1,391 | Content Listing | Science & Tech. | 41.998539 | 95,609,335 |
|Name, symbol||Hydrogen-2,2H or D|
|Natural abundance||0.0115% (Earth)|
|Isotope mass||2.01410178 u|
|Excess energy||13135.720± 0.001 keV|
|Binding energy||2224.52± 0.20 keV|
|Complete table of nuclides|
Deuterium (or hydrogen-2, symbol
, also known as heavy hydrogen) is one of two stable isotopes of hydrogen (the othe... | <urn:uuid:fcfa2ca4-fe79-4056-b8b3-66670cb51736> | 3.859375 | 11,105 | Knowledge Article | Science & Tech. | 53.745763 | 95,609,345 |
A simulated quantum computer went online on the Internet last month. With the ability to control 31 quantum bits, it is the most powerful of its type in the world. Software engineers can use it to test algorithms that might one day be applied in real computer networks.
Many computing problems in fundamental physics or ... | <urn:uuid:c1924c80-c0fb-434e-a490-2f519f7dd67c> | 3.6875 | 530 | News Article | Science & Tech. | 31.381565 | 95,609,371 |
What began as an homage to achievement in the field of coral reef geology has evolved into the discovery of an unexpected link between corals of the Pacific and Atlantic.
Dr. Ann F. Budd from the University of Iowa and Dr. Donald McNeill of the University of Miami named a new species of fossil coral found on the Island... | <urn:uuid:890f24b2-c658-491b-9ba9-5ea144fac6b4> | 3.03125 | 1,470 | Content Listing | Science & Tech. | 31.583284 | 95,609,373 |
Cotinis nitida, commonly known as the green June beetle, June bug or June beetle, is a beetle of the family Scarabaeidae. It is found in the eastern United States, where it is most abundant in the South. It is sometimes confused with the related southwestern species figeater beetle Cotinis mutabilis, which is less dest... | <urn:uuid:ebd5bdfd-146a-4454-81c3-68aa38312265> | 3.484375 | 1,239 | Knowledge Article | Science & Tech. | 56.567462 | 95,609,387 |
This discovery was made by researchers at University of Kalmar in Sweden, in collaboration with researchers in Gothenburg, Sweden, and Spain. The findings are described in an article in the prestigious academic journal Nature.
"It was long thought that algae were the only organisms in the seas that could use sunlight t... | <urn:uuid:28125c8c-0316-4496-b0f4-2f6132d316c4> | 4.03125 | 1,122 | Content Listing | Science & Tech. | 38.85571 | 95,609,391 |
For more than a decade, astronomers have been puzzled by bright galaxies in the distant universe that appear to be forming stars at phenomenal rates. What prompted the prolific star creation, they wondered. And what kind of spatial environment did these galaxies inhabit?
Now, using a super-sensitive camera/spectrometer... | <urn:uuid:a713b3d5-044a-47fd-b3bd-2d3082262f5a> | 3.453125 | 1,398 | Content Listing | Science & Tech. | 36.209064 | 95,609,392 |
Samarium–neodymium dating is a radiometric dating method useful for determining the ages of rocks and meteorites, based on radioactive decay of a long-lived samarium (Sm) isotope to a radiogenic neodymium (Nd) isotope. Neodymium isotope ratios together with samarium-neodymium ratios are used to provide information on t... | <urn:uuid:648de218-02a3-4fb8-bc3e-9abd25819254> | 3.75 | 2,110 | Knowledge Article | Science & Tech. | 50.118999 | 95,609,399 |
For the first time, scientists have discovered how C-reactive protein, or CRP, is able to access endothelial cells. The UC Davis researchers findings will be published in the July issue of Arteriosclerosis, Thrombosis, and Vascular Biology, one of the American Heart Associations leading journals.
CRP is a known risk ma... | <urn:uuid:7f173200-70a5-4c96-a9f7-c7debe9833bd> | 3.390625 | 860 | Content Listing | Science & Tech. | 38.825389 | 95,609,420 |
Einstein received the Nobel Prize in 1921 for his theoretical explanation in 1905 of the so-called photo-effect -- that is, the emission of electrons from a metal surface by incident light.
In Einstein's time, laboratory light sources provided light of very low intensity in comparison with modern lasers like those at K... | <urn:uuid:9ce6ea75-8ae9-48e5-b907-3a383f103614> | 4 | 1,677 | Content Listing | Science & Tech. | 43.24841 | 95,609,421 |
+44 1803 865913
By: Elisabetta Turtle(Author), Erik Asphaug(Author)
300 pages, 120 illus., 10 in colour
Planetary surfaces throughout the Solar System, and the current interest in impacts on the Earth, attest to the importance of impact cratering as a geological process. Impact craters have been identified on all but o... | <urn:uuid:470c1509-78aa-4c7c-8d5a-97485705540f> | 3.71875 | 298 | Product Page | Science & Tech. | 31.631536 | 95,609,435 |
Most climate records predating the Industrial Revolution are the product of modern sampling used to reconstruct past conditions. However, Shinto priests have been recording the timing of the omiwatari on Lake Suwa, Japan for over 500 years (beginning 1443). The omiwatari is a buckling of lake ice that occurs just after... | <urn:uuid:210f6dd9-8443-4720-ad11-aa94cb7d4271> | 3.65625 | 358 | Academic Writing | Science & Tech. | 33.722929 | 95,609,440 |
posted by anonymus
Triangle ABCis right angled at a .AD is perpendicular to BC.If AB=5cm,BC=13cm and AC=12cm,Find the area of triangle abc .Aiso findthe length of AD.
I hope you can figure the area of ABC with no trouble.
Using similar triangles, because angle B is the same in both, and both are right triangles,
12/13 ... | <urn:uuid:b61a0cda-db41-4bc3-8664-f09e5dd8f17a> | 3.515625 | 152 | Q&A Forum | Science & Tech. | 84.791535 | 95,609,458 |
+44 1803 865913
The South China Sea, making up about 3,400,000 sq km of the Western Pacific Ocean, including more than 200 coral islets, and extending from the equator near Singapore to the Tropic of Cancer, is an area with significant biodiversity. This book is a good introduction to that diversity and opens with 2 sh... | <urn:uuid:591a0aff-f3c0-40ce-a97a-c70e64acd31e> | 2.953125 | 192 | Product Page | Science & Tech. | 51.729032 | 95,609,459 |
File:Carbon Dioxide 800kyr.svg
English: This figure shows the variations in concentration of carbon dioxide (CO2) in the atmosphere during the last 800 thousand years. Throughout most of the record, the largest changes can be related to glacial/interglacial cycles within the current ice age. Although the glacial cycles... | <urn:uuid:0e8a3417-c29c-41c3-92cc-4bbdf41057f9> | 3.578125 | 1,082 | Knowledge Article | Science & Tech. | 60.650891 | 95,609,465 |
In the field of molecular biology, trans-acting (trans-regulatory, trans-regulation), in general, means "acting from a different molecule" (i.e., intermolecular). It may be considered the opposite of cis-acting (cis-regulatory, cis-regulation), which, in general, means "acting from the same molecule" (i.e., intramolecu... | <urn:uuid:ae1a3f83-38dd-4918-944f-366cf0c6cc70> | 3.4375 | 234 | Knowledge Article | Science & Tech. | 43.021219 | 95,609,466 |
Earthquake scientists show off rocks from the depths of the San Andreas fault
For the first time in the history of earthquake studies, scientists have penetrated deep into the very heart of an active earthquake zone and brought up a ton of rocks as they seek to understand how and why quakes behave.
Their harvest comes ... | <urn:uuid:810ef11e-4d20-4641-9267-e042f8715f60> | 3.4375 | 1,079 | News Article | Science & Tech. | 42.164015 | 95,609,474 |
Washington: Analysing data from NASA’s planet-hunter, the Kepler space telescope, astronomers have captured for the first time a brilliant flash of an exploding star’s shockwave or “shock breakout” in the optical wavelength or visible light.
The team led by Peter Garnavich, astrophysics professor at the University of N... | <urn:uuid:758f8e67-08a3-4f93-82af-10f78fe21ee2> | 3.59375 | 573 | News Article | Science & Tech. | 40.891373 | 95,609,501 |
There is no magic bullet, no single thing that can replace all our fossil fuel combustion at a stroke. We can’t swap our fossil fuel consumption for something less harmful completely, immediately.
It would be good if we could do it really quickly, but we can’t. If we simply stopped using fossil fuels at a stroke, one o... | <urn:uuid:1790391c-ae82-402a-b61d-e59880d825e9> | 3.203125 | 2,200 | Personal Blog | Science & Tech. | 50.250125 | 95,609,503 |
The number 30 is the smallest number evenly divisible by both six and 10. There are several ways to arrive at the least common multiple for a group of numbers, but the mathematical formula involves figuring it from the prime factors of each number. The prime factors of six are two and three. The prime factors of ten ar... | <urn:uuid:0035eb0d-c5cc-4f2d-b2a1-afc023837eb8> | 3.671875 | 119 | Knowledge Article | Science & Tech. | 77.731068 | 95,609,507 |
Will ocean acidification disrupt the planet's ecosystem before climate change does?
Water-smart urban design and drought in the American West.
Could climate change lead to fewer males?
For the first time in 35 years, atmospheric ozone actually increased, according to NASA measurements.
The next generation of solar powe... | <urn:uuid:1c14dc06-bbd0-461f-ae59-bc6a55148e14> | 2.515625 | 191 | Content Listing | Science & Tech. | 44.6875 | 95,609,530 |
New machine learning techniques can help experimentalists probe systems of particles exponentially faster than conventional, brute-force techniques
The same techniques used to train self-driving cars and chess-playing computers are now helping physicists explore the complexities of the quantum world.
For the first time... | <urn:uuid:4a736480-41a3-4adf-ba8f-d5766bb87d55> | 3.375 | 1,667 | Content Listing | Science & Tech. | 38.361108 | 95,609,567 |
The researchers, from the University of Toronto and the University of Chicago, find that people are more likely to attribute human qualities or traits to inanimate objects if the product fits with their expectations of relevant human qualities – and are also more likely to positively evaluate an anthropomorphized item.... | <urn:uuid:6f0c0e72-e10d-45b2-93d7-c3b9c15c4de7> | 2.890625 | 936 | Content Listing | Science & Tech. | 30.633725 | 95,609,579 |
Found within the Small Magellanic Cloud – a galactic neighbor of the Milky Way – the large region of ionized hydrogen gas is designated "LHa115-N19," and "contains a number of massive stars and overlapping supernova remnants," said Rosa Williams, an astronomer at the U. of I. "We can tell there has been a fair amount o... | <urn:uuid:01fa1f11-9d64-40ba-89c4-48c2070131ec> | 3.34375 | 1,070 | Content Listing | Science & Tech. | 39.470686 | 95,609,580 |
Geneticists show the COPIA-R7 transposon enhances the immunity of its host against a pathogenic microorganism
Transposons are DNA elements that can multiply and change their location within an organism’s genome. Discovered in the 1940s, for years they were thought to be unimportant and were called “junk DNA.” Also refe... | <urn:uuid:b6904727-3be5-48cf-b2bb-c34e2d4c7ddb> | 3.375 | 1,130 | News Article | Science & Tech. | 16.193077 | 95,609,594 |
The team has evaluated high-res pictures from the American space probe "Mars Reconnaissance Orbiter" (MRO) and they show that on the surface of the planet a gully about two metres wide, caused by erosion, has increased in length.
Between November 2006 and May 2009 it lengthened by around 170 metres. “The changes to the... | <urn:uuid:4c1e920c-dd0f-4431-bd56-a99dd888f485> | 3.75 | 1,442 | Content Listing | Science & Tech. | 45.931643 | 95,609,620 |
NIST Releases a Major Upgrade of Mass Spectra Library
News Dec 23, 2005
After three years of development, the National Institute of Standards and Technology (NIST) have released a major upgrade of the widely used NIST/EPA/NIH Mass Spectral Library.
The library is an encyclopedic database of "fingerprints" used to ident... | <urn:uuid:ac0fe84c-ec06-41da-9aa3-c57f22b5c935> | 2.734375 | 373 | News Article | Science & Tech. | 25.517308 | 95,609,623 |
To mark UNESCO's International Year of Astronomy (IYA2009), six leading astronomers from the UK, the US, Europe and Asia write in March's Physics World about the biggest challenges and opportunities facing international astronomers over the next couple of decades.
Many of those challenges are purely scientific, includi... | <urn:uuid:66b6cbee-4acc-4e88-9399-067db0f1986d> | 2.859375 | 607 | News (Org.) | Science & Tech. | 5.000682 | 95,609,644 |
Solitary Wasp: Mellinus Arvensis
Everyone is surely familar with the common yellow and black wasp species, Vespula vulgaris; a social wasp, living in colonies and extremely aggresive if disturbed or threatened. However, there are many other species of wasps, not all of which are yellow and black, and most of which live... | <urn:uuid:092b0d19-ef0e-4d02-9c02-7dbbc95e651b> | 3 | 252 | Personal Blog | Science & Tech. | 50.59471 | 95,609,653 |
Authors: William JE Brown
Although mathematically basic, the geometrical principles enshrined within Edwin Abbott Abbott’s 1884 work, Flatland: A Romance of Many Dimensions are unyieldingly consistent, and although Albert Einstein did not directly credit EA Abbott in Part III of his 1916 popular work Relativity, he dep... | <urn:uuid:1e3fed76-2f01-4d7c-a752-ceda1fea1c49> | 2.859375 | 671 | Knowledge Article | Science & Tech. | 27.129009 | 95,609,654 |
|Scientific Name:||Ocybadistes knightorum Lambkin & Donaldson, 1994|
|Red List Category & Criteria:||Endangered B1ab(iii,v)+2ab(iii,v) ver 3.1|
|Assessor(s):||Andren, M. & Cameron, M.A.|
The Black Grass-dart Butterfly is assessed as Endangered. It has an extent of occurrence (EOO) of 312 km2, an area of occupancy (AOO)... | <urn:uuid:cf3cef26-cc3e-4dda-9018-f027997bc1d7> | 2.640625 | 2,519 | Knowledge Article | Science & Tech. | 47.54833 | 95,609,674 |
Compton Spectrometer and Imager Explorer - COSI-X is a wide-field gamma-ray telescope
fitted onto a super pressure balloon.
The Large Area Telescope collaboration operates a gamma-ray telescope
onboard the Fermi Gamma Ray Space Telescope mission and has revolutionized our view of the gamma-ray Universe, by increasing t... | <urn:uuid:2ee5358d-0359-4adc-b2a5-6c423c124623> | 3.578125 | 464 | Knowledge Article | Science & Tech. | 17.632281 | 95,609,683 |
Michael Mann knows more about Earth's climate over the last 1,000 years than most. He's studied the history of changes in Earth's climate over the past 1,000 years to better understand how human-driven climate change of the 21st century compares. Mann has also pioneered techniques the climate scientists use today to di... | <urn:uuid:f1d33569-6d4f-4562-885a-c3596a5be834> | 2.75 | 308 | News (Org.) | Science & Tech. | 35.406119 | 95,609,768 |
Populations of marine mammals, birds, reptiles and fish have dropped by about half in the past four decades, with fish critical to human food suffering some of the greatest declines, WWF warned Wednesday.
In a new report, the conservation group cautioned that over-fishing, pollution and climate change had significantly... | <urn:uuid:216e5aa3-be1f-4015-b814-183e18a2f1ad> | 3.5 | 663 | News Article | Science & Tech. | 36.33116 | 95,609,778 |
Gram staining of bacteria is a routine diagnostic method of long standing that can be used for initial diagnoses and to simplify the choice of antibiotics. It is a simple way to classify bacteria into two classes—Gram-positive and Gram-negative—under a microscope. In the journal Angewandte Chemie, American researchers ... | <urn:uuid:c31190da-9d6e-412c-bf63-3762328dce68> | 4.0625 | 1,110 | Content Listing | Science & Tech. | 34.540177 | 95,609,795 |
Why do things burn up on re-entry into earth's atmosphere?
The main reason why things heat up when they hit the Earth’s atmosphere is they've got huge amounts of kinetic energy - they're going incredibly fast. When they bash into the Earth’s atmosphere, most of the heating is actually because the air they bash into has... | <urn:uuid:a3616599-6232-4e0b-ab89-db869b822e3c> | 3.328125 | 1,352 | Comment Section | Science & Tech. | 62.405513 | 95,609,809 |
Mars today is a dry, frozen place. But this was not always the case. Ancient Mars was likely warm and wet, much like Earth. So what happened to change it? Thanks to brand new results from NASA's MAVEN mission, announced today, we may finally know. Blame the Solar winds.
The Solar Winds
"When we look at ancient mars we ... | <urn:uuid:99832db3-3e4b-4020-850f-00e1c6f06ecb> | 3.875 | 629 | News Article | Science & Tech. | 51.001619 | 95,609,828 |
Though viruses are the most abundant life form on Earth, our knowledge of the viral universe is limited to a tiny fraction of the viruses that likely exist. In a paper published this week in the online journal mBio, researchers from the University of Pittsburgh, Washington University in St. Louis, and the University of... | <urn:uuid:3e2d0a47-a342-4707-aa21-a6a1e2c393ae> | 4.0625 | 1,320 | Content Listing | Science & Tech. | 38.362009 | 95,609,860 |
Galaxies in the early universe grew fast by rapidly making new stars. Such prodigious star formation episodes, characterized by the intense radiation of the newborn stars, were often accompanied by fireworks in the form of energy bursts caused by the massive central black hole accretion in these galaxies. This discover... | <urn:uuid:d3a4f9da-b3f3-41db-9cea-e7e8dc689bb7> | 3.96875 | 904 | News (Org.) | Science & Tech. | 21.910363 | 95,609,875 |
XML Schema Definition (XSD)
by Vijay Mukhi, Shruti Gupta, Sonal Mukhi
The XML Schema specifies the properties of a resource, while the XML file stipulates a set of values for these properties. The primary utility of the XML Schema lies in its ability to concede generous amount of autonomy to the programmer to define th... | <urn:uuid:0a124320-c35b-417d-a4bc-f30c6168028c> | 2.984375 | 349 | Content Listing | Software Dev. | 29.474586 | 95,609,883 |
Inheritable, overridable class data
Class::Data::Inheritable is for creating accessor/mutators to class data. That is, if you want to store something about your class as a whole (instead of about a single object). This data is then inherited by your subclasses and can be overriden.
Source Files (show merged sources der... | <urn:uuid:6556bb38-517e-425f-b780-65cc4ca3cf5a> | 2.65625 | 198 | Content Listing | Software Dev. | 66.846148 | 95,609,884 |
CSS stands for Cascading Style Sheet.
The CSS rules gives the beautiful look to the web page because HTML do not have that many style options.Also, it is wise to keep the style information for website separate from the main content. You can add CSS rule inside HTML document or in a separate file depending on the websit... | <urn:uuid:be15f0cf-6120-4db5-9faf-c24cc020bc08> | 3.1875 | 148 | Tutorial | Software Dev. | 61.431853 | 95,609,888 |
COLUMBUS, Ohio - If you were fortunate enough to witness the recent total solar eclipse in all its glory, you might have noticed something surprising.
It was dark as night, yet people and objects were easier to see than on a typical moonless night.
Scientists at The Ohio State University have discovered a possible biol... | <urn:uuid:35c61ac4-a869-4bee-87e4-9b67a31544a9> | 3.765625 | 809 | News Article | Science & Tech. | 49.493556 | 95,609,889 |
Using the SDL2 library for creating an OpenGL context, GLSL for creating vertex and fragment
shaders, and the C++ programming language (C++11 specification), you should create a simple
two dimensional (2D) Game Engine supporting supporting sprited tiled maps and 2D collision
based on simple rectangle intersection. The ... | <urn:uuid:52bafcb5-5a45-4da2-94fd-e79c133177e2> | 2.796875 | 419 | Product Page | Software Dev. | 48.698521 | 95,609,893 |
5 February 2009
Primitive whales gave birth on land
by Kate Melville
A pair of ancient whale fossils - a pregnant female and a male of the same species - reveals how these primitive ancestors of today's whales gave birth and provides new insights into how whales made the transition from land to water. The 48 million-ye... | <urn:uuid:94d3f91a-4f20-4c84-b006-543f8075f3e3> | 3.90625 | 606 | News Article | Science & Tech. | 34.003676 | 95,609,900 |
6 June 2011
Antimatter bottled-up for 16 minutes
by Kate Melville
Antimatter remains an enigma, but researchers at CERN may soon be able to ascertain some of its key properties thanks to groundbreaking techniques they've developed that trap and store antimatter for more than 15 minutes. Reporting their work in Nature P... | <urn:uuid:217e1959-0a0f-4ffc-b510-313e034a5f9c> | 3.140625 | 533 | Truncated | Science & Tech. | 24.368613 | 95,609,901 |
Scientists at Chalmers University of Technology have developed a new way to study nanoparticles one at a time, and have discovered that individual particles that may seem identical in fact can have very different properties. The results, which may prove to be important when developing new materials or applications such... | <urn:uuid:26143451-aa93-4d6f-8129-977bde8f460b> | 3.671875 | 1,327 | Content Listing | Science & Tech. | 36.675801 | 95,609,904 |
Well-defined fronts develop at the leading edge of the Columbia River (USA) plume. Convergent flow at these frontal boundaries may concentrate zooplanktonic organisms, which may in turn increase local prey availability to planktivorous fishes. In May 2001 and 2002, we compared the density, biomass and community structu... | <urn:uuid:04c8a27f-3130-4d8f-a100-723703266707> | 3.09375 | 411 | Academic Writing | Science & Tech. | 15.967387 | 95,609,919 |
Illustration showing the path of the small asteroid 2013 LR6, which safely passed within 65,000 miles of Earth on Friday.
By Irene Klotz, Reuters
CAPE CANAVERAL, Florida (Reuters) - An asteroid the size of a small truck zoomed past Earth four times closer than the moon on Saturday, the latest in a parade of visiting ce... | <urn:uuid:2f6f7cba-9b5e-4945-84e7-cef949fcfb12> | 3.15625 | 438 | Content Listing | Science & Tech. | 59.633024 | 95,609,921 |
Terrestrial Ecosystems and Their Special Features
Research on ecosystems began in the field of limnology. Initially, therefore, only aquatic ecosystems were examined. The cycling of material in these aquatic systems, which can be represented as is thought of as being generally applicable. It is, however, not possible s... | <urn:uuid:9ed7c924-fc73-474d-8d33-5d616614b376> | 3.09375 | 142 | Truncated | Science & Tech. | 26.486881 | 95,609,926 |
Imagine a new and improved biorefinery, one that produces advanced biofuels as environmentally sustainable as they are economically viable.
Behind the successful conversion of biomass to a better biofuel or a new green chemical, there is a carefully chosen solvent. The right solvent not only dissolves biomass but also ... | <urn:uuid:b18639c1-c9ce-4d28-92ed-7a3f9a921f60> | 3.171875 | 511 | Content Listing | Science & Tech. | 15.392113 | 95,609,929 |
Not to be confused with Ionizing radiation. Illustration of the relative abilities of three different types of ionizing radiation to penetrate solid matter. Note caveats in the text about this simplified diagram. The international symbol for properties of alpha beta and gamma rays pdf and levels of radiation that are u... | <urn:uuid:647bbda5-65d3-455f-9fb0-7357cc6d1656> | 4.15625 | 484 | Knowledge Article | Science & Tech. | 27.452735 | 95,609,937 |
"Recent Results in the Mathematics of Political Power"
September 16, 1997
Bailey Hall 201
Refreshments at 3:45
Math Department Common Room
In democracies, elected representatives typically vote "yes" or "no" on proposed legislation, constitutional changes, etc. The voting systems range from simple majority rule, to wei... | <urn:uuid:3e1ec9dd-8240-49bd-a92c-a3f3d30f680c> | 2.671875 | 204 | News (Org.) | Science & Tech. | 27.488077 | 95,609,940 |
An artist’s conception shows Orbex’s Prime rocket lifting off. (Orbex Illustration) Lockheed Martin is in line to receive $31 million in grants from the UK Space Agency to establish Britain’s first spaceport on Scotland’s north coast, and to develop a new made-in-Britain system for deploying small satellites in orbit. ... | <urn:uuid:e5b10623-db87-46ee-9983-c6ac972ad8af> | 2.84375 | 1,391 | Content Listing | Science & Tech. | 43.431077 | 95,609,961 |
What do you see in this photograph? A Pac-Man with a tail gobbling up stars in the galaxy? NASA published this image of CG4, a ruptured cometary globule, which, in the Rorschach test of observing the heavens, it described as a "claw."
More from NASA:
The "claw" of this odd looking "creature" in the above photo is a gas... | <urn:uuid:597a839a-60ec-4c5f-9d12-f4826a3f4810> | 3.09375 | 213 | Knowledge Article | Science & Tech. | 45.157494 | 95,609,975 |
What is meant by the fourth dimension?© BrainMass Inc. brainmass.com July 19, 2018, 8:05 am ad1c9bdddf
When we look at our world, we describe objects as three dimensional.
We can see that an object has certain length, width and height.
The same for a coordinate system. We can describe any point in space with three numb... | <urn:uuid:5d5aa9fb-6d88-4da9-977f-86d867bf7377> | 3.40625 | 149 | Truncated | Science & Tech. | 71.972381 | 95,610,000 |
Research published today (22 February) in the journal Nature shows that western scrub-jays are able to plan for future food shortages by caching food. The birds are shown to have learned from their previous experiences of food scarcity, storing food for future use in places where they anticipate future slim pickings. T... | <urn:uuid:93ee1084-f806-4ede-96c2-920e69b4b310> | 3.546875 | 1,134 | Content Listing | Science & Tech. | 41.111249 | 95,610,006 |
A recent study in Nature (1) suggested that terrestrial plants may be a global source of the potent greenhouse gas methane, making plants substantial contributors to the annual global methane budget. This controversial finding and the resulting commotion triggered a consortium (2) of Dutch scientists to re-examine this... | <urn:uuid:15af37ba-4824-45e0-a021-fc39e027bff1> | 3.78125 | 1,158 | Content Listing | Science & Tech. | 39.030696 | 95,610,017 |
San Francisco: Billionaire Internet investor Yuri Milner announced another $100 million initiative on Tuesday to better understand the cosmos, this time by deploying thousands of tiny spacecraft to travel to our nearest neighboring star system and send back pictures.
If successful, scientists could determine if Alpha C... | <urn:uuid:f606511c-1a19-4f2e-a94e-6ceaba593f8f> | 2.984375 | 575 | News Article | Science & Tech. | 37.628183 | 95,610,025 |
The Gravimetry Problem
A classical problem in geophysics and physical geodesy is gravimetry, i.e., the determination of the Earth’s mass density distribution from measurements of the gravitational potential or related quantities.
KeywordsHarmonic Function Gravitational Potential Scaling Function Mother Wavelet Regular ... | <urn:uuid:5d7ded35-b238-4ae4-a9e6-f0760cfdc6af> | 2.71875 | 77 | Truncated | Science & Tech. | 7.181 | 95,610,030 |
A global study led by Professor Robert Diaz of the Virginia Institute of Marine Science, College of William and Mary, shows that the number of "dead zones"—areas of seafloor with too little oxygen for most marine life—has increased by a third between 1995 and 2007.
Diaz and collaborator Rutger Rosenberg of the Universi... | <urn:uuid:83670be7-8efc-44a0-b9f2-50e64af3bcc4> | 3.8125 | 1,540 | Content Listing | Science & Tech. | 45.458692 | 95,610,032 |
Isotopes of chlorine
|Standard atomic weight (Ar, standard)||
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Chlorine (17Cl) has 25 isotopes with mass numbers ranging from 28Cl to 52Cl and 2 isomers (34mCl and 38mCl). There are two principal sta... | <urn:uuid:b79ed963-37b3-4085-9bf5-6110a979ba26> | 3.453125 | 1,705 | Structured Data | Science & Tech. | 97.839873 | 95,610,050 |
Over a 20-year period, Gregory Rasmussen, currently at Lady Margaret Hall Oxford, intensively studied every move of African wild dogs in Zimbabwe to the extent of "living with packs" for periods of up to a month in order to work out how much energy they were spending eating, sleeping, and running. He came to the conclu... | <urn:uuid:391debc6-485b-4fb1-9f79-0929e6f599f4> | 3.390625 | 1,233 | Content Listing | Science & Tech. | 36.908689 | 95,610,058 |
New evidence that a sea of cosmic neutrinos permeates the universe Clear evidence the first stars took more than a half-billion years to create
a cosmic fog
Tight new constraints on the burst of expansion in the universe's first trillionth of a second
"We are living in an extraordinary time," said Gary Hinshaw of NASA'... | <urn:uuid:0a0d41b0-6753-498d-99c0-b67093da27c8> | 3.0625 | 1,743 | Content Listing | Science & Tech. | 45.158732 | 95,610,059 |
“I would like to emphasize something. The theories about the rest of physics are very similar to the theory of quantum electrodynamics: they all involve the interaction of spin 1/2 objects (like electrons and quarks) with spin 1 objects (like photons, gluons, or W’s) within a framework of amplitudes by which the probab... | <urn:uuid:ffeccc68-3532-4e48-b8c2-8a643e827474> | 2.796875 | 3,042 | Personal Blog | Science & Tech. | 36.619137 | 95,610,067 |
Electron transport is caused by an electric field, a thermal gradient, or a concentration gradient. In the latter two cases, a uniform condition is established as a result of the transport unless external sources are used to maintain the nonuniform conditions. The transport of electrons under these conditions may cause... | <urn:uuid:777a29cc-5f86-43b6-9f94-ba3e3d8ce4d7> | 3.265625 | 344 | Truncated | Science & Tech. | 29.566705 | 95,610,080 |
New analysis from the College of Guelph is dispelling a generally held assumption about local weather change and its impression on forests in Canada and overseas.
It is lengthy been thought that local weather change is enabling treelines to march farther uphill and northward. Nevertheless it seems that local weather wa... | <urn:uuid:3b30ec25-15e2-4592-a126-fae3b9a8dad0> | 3.40625 | 624 | News Article | Science & Tech. | 23.2576 | 95,610,086 |
The ocean makes up the Earths primary life support system, comprises 70 percent of our planets surface and is essential to human well-being and prosperity. Ocean ecosystems are threatened by unsustainable fishing, global change, habitat destruction, invasive species, and pollution - the combined effects of which are fa... | <urn:uuid:42a33cd6-4b24-47b3-af5c-472dfce003ac> | 2.734375 | 419 | Academic Writing | Science & Tech. | 12.04659 | 95,610,110 |
If you thought genetically modified crops were controversial, genetically modified animals are a whole different playing field of bizarre. Science has made a ton of advancements in changing animal DNA, especially with CRISPR, a genome editing tool that allows scientists to edit genomes with unprecedented precision. CRI... | <urn:uuid:bd4eb264-fffe-4976-9123-b2dfbb7baf7b> | 3.09375 | 921 | Listicle | Science & Tech. | 44.849189 | 95,610,129 |
- Open Access
A review of comet and asteroid statistics
© The Society of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS); The Seismological Society of Japan; The Volcanological Society of Japan; The Geodetic Society of Japan; The Japanese Society for Planetary Sciences. 1999
Received: 7 October 1998
Accep... | <urn:uuid:b2546ad3-85cc-420c-a234-d4f70c5fe740> | 2.90625 | 304 | Truncated | Science & Tech. | 28.565227 | 95,610,142 |
reactance(redirected from Capacitive reactance)
Also found in: Thesaurus, Medical, Encyclopedia.
Related to Capacitive reactance: Inductive reactance
n. Symbol XElectricity
Opposition to the flow of alternating current caused by the inductance and capacitance in a circuit rather than by resistance.
1. (Electronics) the... | <urn:uuid:3d655bb3-13f2-4ad9-8605-9546bf83c06c> | 2.6875 | 205 | Structured Data | Science & Tech. | 19.096853 | 95,610,154 |
A huge radio telescope called the Square Kilometre Array (SKA) may help solve some of the most fundamental cosmic mysteries surrounding the birth and growing pains of our Universe – including the possibility of extraterrestrial life.
Scientists have learned so much about the workings of our inconceivably vast Universe ... | <urn:uuid:fb83b975-4da6-4ccc-a000-da47ac487d56> | 3.6875 | 2,887 | Knowledge Article | Science & Tech. | 34.23486 | 95,610,178 |