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Joining different kinds of materials can lead to all kinds of breakthroughs. It’s an essential skill that allowed humans to make everything from skyscrapers (by reinforcing concrete with steel) to solar cells (by layering materials to herd along electrons).
In electronics, joining different materials produces “heteroju... | <urn:uuid:f2509626-50ea-4062-82bd-03fad92d07b8> | 4.15625 | 792 | News Article | Science & Tech. | 40.576485 | 95,614,535 |
For Immediate Release, September 20, 2016
Contact: Tierra Curry, (928) 522-3681, email@example.com
Mississippi Fish Proposed for Endangered Species Act Protection After 25 Years On Waiting List
JACKSON, Miss.— In response to a settlement with the Center for Biological Diversity to speed protections for 757 species, the... | <urn:uuid:3cc7e8c5-7747-483c-be27-6dd098f42a99> | 3.1875 | 712 | News (Org.) | Science & Tech. | 45.850755 | 95,614,537 |
The following terms are commonly encountered in Mathematics. It is important to have an understanding of these terms as they will assist in understanding and make questions more meaningful when you encounter them.
- It is an imaginary line, a straight line to which a graph continuously draws nearer without ever touchin... | <urn:uuid:42b16575-7e3d-4452-8673-1686ff0e5e07> | 4.125 | 245 | Structured Data | Science & Tech. | 56.572513 | 95,614,573 |
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Methods in Surface Physics Experimentation in Ultra-High Vacuum Environments. Hasan Khan ( U niversity of Rochester ), Dr. Meng-Fan Luo ( N ational Central University ). Introduction. Objective.
in Ultra-High Vacuum Environments
Hasan Khan (University of Rochester), Dr. M... | <urn:uuid:6bd14e8d-5b0b-4f59-8d0d-dacfa5d8d8fb> | 3.015625 | 1,095 | Academic Writing | Science & Tech. | 41.762113 | 95,614,577 |
Thirsty Middle Eastern and North African countries could tap into their solar-energy potential to cope with fresh water scarcity, according to resource experts.
Water could be saved by switching to renewable solar energy from fossil fuel electricity generation that uses up water, said the World Resources Institute (WRI... | <urn:uuid:02cbc505-c472-4350-9305-e69df64f9f35> | 3.015625 | 248 | News Article | Science & Tech. | 24.774054 | 95,614,579 |
ICARUS is the largest liquid-argon neutrino detector in the world, and the technology pioneered for the experiment will be the template for future neutrino experiments.
Scientists have observed three types of neutrino — the muon, electron and tau neutrinos — and have also observed them changing between types. Experimen... | <urn:uuid:52631636-3938-410d-b34d-ca557fb58545> | 3.53125 | 484 | About (Org.) | Science & Tech. | 25.796325 | 95,614,582 |
One of the reasons I love oceans is that they're bursting with life. Crazy, sort of unbelievable life if you think about it: Sea horses, anemones, whales, lobster, limpets, sharks, the list goes on and on.
For anyone fascinated by the beautiful oddities of the universe hiding around every corner, oceans are an endless ... | <urn:uuid:ea5f7b35-b35c-4254-a7fc-7f17f2d796e4> | 3.203125 | 536 | Personal Blog | Science & Tech. | 42.067535 | 95,614,592 |
That's the startling conclusion drawn by a Johns Hopkins University marine geologist, writing in the July issue of the journal Geology.
Postdoctoral fellow Justin Ries and his collaborators say this is the first known case of an animal altering the composition of its skeleton in response to change in its physical envir... | <urn:uuid:4c9c5761-6eb5-4ad7-91d2-a0d12e0d9231> | 3.625 | 1,735 | Content Listing | Science & Tech. | 32.3432 | 95,614,593 |
|시간 제한||메모리 제한||제출||정답||맞은 사람||정답 비율|
|2 초||512 MB||87||66||62||82.667%|
George Boole was an English mathematician, educator, philosopher who was born in 1815, 200 years ago. He was the first professor of mathematics at Queen's College, Cork (now University College Cork (UCC)) and is known as the inventor of boolean ar... | <urn:uuid:eb044b1c-64b5-48c7-8537-021e31c52770> | 3.8125 | 345 | Tutorial | Science & Tech. | 71.080541 | 95,614,614 |
Preferred Interaction Patterns from Crystallographic Databases
A knowledge of three-dimensional structure, in all of its aspects, is an essential prerequisite of the molecular modelling process. This knowledge may be divided, on energetic grounds, into two categories. Firstly, information is required about the covalent... | <urn:uuid:77ade970-98ed-4891-88a5-78ce89020a7b> | 2.515625 | 834 | Truncated | Science & Tech. | 52.601749 | 95,614,627 |
Morphology of Planets and Satellites
In the broadest sense, we consider that the morphologies of rocky members of the Solar System (Table 1, listed in order of distance from their host) can be grouped into three categories: endogenic, exogenic, and exotic. Endogenic provinces are ones that were produced by internal for... | <urn:uuid:8cd8e73d-e840-4bef-9f43-4d9ef117e285> | 3.8125 | 240 | Truncated | Science & Tech. | 8.514262 | 95,614,628 |
Most studies of climate-driven changes in avian breeding phenology have focused on temperate passe-rines, yet the consequences of such environmental change may be more deleterious for other avian taxa, such as arctic and sub-arctic waders (Charadrii). We therefore examine large-scale climatic correlates of the breeding... | <urn:uuid:cee5a3e6-7e04-4334-8cc8-e0287ab0150e> | 3.359375 | 387 | Academic Writing | Science & Tech. | 17.308568 | 95,614,630 |
May 15, 2008
User Interfaces Are A Graphical Domain-Specific LanguageWhen I occasionally stop to think more deeply about software development, I'm often drawn to the concept of languages.
Languages are very integral to programming, of course. We use programming languages like Java, C# and Ruby to give instructions to o... | <urn:uuid:b47de284-552b-4b47-b666-26c74893566a> | 2.734375 | 727 | Personal Blog | Software Dev. | 33.478774 | 95,614,636 |
SLAC Research Reveals Rapid DNA Changes that Act as Molecular Sunscreen
The molecular building blocks that make up DNA absorb ultraviolet light so strongly that sunlight should deactivate them – yet it does not. Now scientists have made detailed observations of a “relaxation response” that protects these molecules, and... | <urn:uuid:01590e23-c131-4683-9927-b3a1100d529d> | 3.609375 | 1,952 | Content Listing | Science & Tech. | 37.127828 | 95,614,653 |
For the first time, astronomers have discovered a planet outside our solar system that is potentially habitable with Earth-like temperatures - a find researchers described Tuesday as a big step in the search for life in the universe.
The planet is just the right size, might have water in liquid form, and in galactic te... | <urn:uuid:615ee266-3928-46be-8ec7-a52b9c603e5f> | 3.734375 | 229 | News Article | Science & Tech. | 44.881576 | 95,614,654 |
Fruits of the sea: Startling strawberry crab discovered off Taiwan
A marine biologist has discovered a startling new crab species that resembles a large strawberry.
The unusual crustacean was found off the coast of southern Taiwan. It has a dramatic bright red shell covered with small white bumps.
A new species of crab... | <urn:uuid:ff9a2216-75de-4ed4-ae00-5190fffaacc0> | 2.65625 | 414 | News Article | Science & Tech. | 28.709673 | 95,614,676 |
Pioneer Saturn Encounter
Publisher: NASA 1979
Number of pages: 45
The Pioneer 10 and 11 spacecraft made the first crossings of the asteroid belt and were the first to encounter Jupiter and its intense radiation belts. Pioneer 11 made the first flyby of Saturn almost a billion miles from Earth where it came within 13,30... | <urn:uuid:3a4770da-0a48-4c8d-a539-b532575d6457> | 3.3125 | 355 | Content Listing | Science & Tech. | 46.519 | 95,614,677 |
This image from Hubble's Wide Field Camera 3 (WFC3) shows a section of NGC 1448, a spiral galaxy located about 50 million light-years from Earth in the little-known constellation of Horologium (The Pendulum Clock). We tend to think of spiral galaxies as massive and roughly circular celestial bodies, so this glittering ... | <urn:uuid:d6bcc7af-52e0-4edf-9151-44d366433138> | 3.828125 | 917 | Content Listing | Science & Tech. | 43.5375 | 95,614,695 |
A scientist looks through a microscope.
(photo credit: INGIMAGE)
An international team of biologists has identified the molecular signature of the animal kingdom, providing genetic evidence for an animal classification that has been used for nearly 300 years. Their research, just published in the prestigious journal Na... | <urn:uuid:53196ecd-455a-44e3-97cc-100d525df474> | 3.90625 | 1,080 | News Article | Science & Tech. | 23.203475 | 95,614,696 |
New Innovatively-Designed low Cost Material To Combat
Air And Water Pollution
Study has produced a new material which could adsorb air and water pollutants and could be a low cost sustainable alternative to the currently used activated carbon
Pollution makes our planet’s land, water, air and other constituents of the e... | <urn:uuid:59fb849b-3a10-4dcf-80e9-f3ef9a78739a> | 3.78125 | 1,544 | Knowledge Article | Science & Tech. | 23.633412 | 95,614,711 |
IG reported that a new magmatic intrusion at Sierra Negra was heralded by a M 5.2 earthquake recorded at 1830 on 4 July, and followed by 68 events between M 1.1 and 3.9.
Seismic tremor began to be recorded at 1700 on 7 July by a station on the NE edge of the caldera.
At the same time satellite data showed an increase i... | <urn:uuid:0a0f9d53-18be-4776-93aa-d11884fc57d5> | 2.84375 | 286 | News Article | Science & Tech. | 73.195876 | 95,614,721 |
The discovery of the electron in 1897 was followed just 14 years later by the discovery of the atomic nucleus in 1911. In 1913 Bohr proposed a model of the hydrogen atom in which the electron made perfectly circular orbits around the newly discovered nucleus (proton) only to see his theory replaced by Schrödinger’s mor... | <urn:uuid:a8e1c246-daf2-4ac4-a013-fadae1dd7612> | 3.453125 | 1,342 | Personal Blog | Science & Tech. | 55.603102 | 95,614,734 |
Once again I got an email from my online XML course. This week there were two topics covered – XSL and XSLT. Unfortunately the coverage of XSLT was very light. I think I have written about XSLT with a little more depth before. If not, it might be time for a little more study and a future post. This week starts with an ... | <urn:uuid:83b5a27c-0090-4bba-a20b-37856d6f521a> | 2.78125 | 366 | Personal Blog | Software Dev. | 71.342325 | 95,614,741 |
In gravitationally bound systems, the orbital speed of an astronomical body or object (e.g. planet, moon, artificial satellite, spacecraft, or star) is the speed at which it orbits around either the barycenter or, if the object is much less massive than the largest body in the system, its speed relative to that largest... | <urn:uuid:6f1d4290-b938-4548-b8ac-03d1abdd6223> | 4.125 | 1,255 | Knowledge Article | Science & Tech. | 69.212935 | 95,614,806 |
Positional Relationship Between The Sun And Earth
Author: Source: Datetime: 2016-09-12 11:05:42
(1) with the celestial celestial coordinate system
Globe as an observer to any length (infinite) radius, on the distribution of all the celestial sphere is called the celestial chimney.
Through the center of the celestial sp... | <urn:uuid:140c4a80-0076-4c18-bff6-34b217d66c10> | 3.5 | 917 | Truncated | Science & Tech. | 27.779176 | 95,614,807 |
A No-Nonsense Introduction to General Relativity
by Sean M. Carroll
Number of pages: 24
General relativity has a reputation of being extremely difficult. This introduction is a very pragmatic affair, intended to give you some immediate feel for the language of General Relativity. It does not substitute for a deep under... | <urn:uuid:70e78474-1ae0-4b7a-b132-8443b2f9cf2a> | 2.671875 | 338 | Content Listing | Science & Tech. | 30.101447 | 95,614,823 |
Where God divides by zero
How do you study something that is, by definition, impossible to see? That’s the quandary faced by astrophysicists interested in black holes. The singularity itself – the point inside a black hole where the laws of physics break down – remains the most enigmatic monster in the astronomical bes... | <urn:uuid:03ab43a5-4054-4b2d-9375-bdb8f16f3baa> | 2.578125 | 139 | Truncated | Science & Tech. | 45.331923 | 95,614,849 |
Well, such an energy-efficient, self-propelling mechanism already exists in nature. The salp, a smallish, barrel-shaped organism that resembles a kind of streamlined jellyfish, gets everything it needs from the ocean waters to feed and propel itself. And, scientists believe its waste material may actually help remove c... | <urn:uuid:9f92203f-dea7-4ca4-b200-bd922f6b628e> | 3.953125 | 1,973 | Content Listing | Science & Tech. | 41.386646 | 95,614,873 |
Using an animal model, Penn researchers identify receptor in endothelial cells that is crucial for cardiovascular development
Congenital heart disease (CHD) is a leading cause of mortality in children worldwide. According to the American Heart Association, Congenital cardiovascular defects are present in about one perc... | <urn:uuid:57375da9-58cc-4523-992e-8166a1562314> | 3.0625 | 955 | Content Listing | Science & Tech. | 34.905497 | 95,614,883 |
© Planetary Visions (credit: ESA/Planetary Visions)
The world’s oceans and atmosphere work as a system, exchanging heat, moisture and gases. Changes in the temperature of sea surface affect atmospheric dynamics, which in turn influence the weather and climate. This is not a one-way process, however, because the atmosph... | <urn:uuid:e6a47ce7-4e3c-4ebe-860b-56db0f464305> | 2.953125 | 112 | Truncated | Science & Tech. | 34.314118 | 95,614,888 |
Degree/Major: Ph.D., Inorganic Chemistry, 1984, MIT
Curriculum vitae: SummersCV.email@example.com
Dave Summers investigates a wide range of chemical reactions that are either needed for life to begin, that may affect whether life can exist, or that might be used by scientists to recognize life elsewhere. For example he... | <urn:uuid:b521016f-916c-49fc-9c6c-6bfc3905ad9e> | 2.734375 | 588 | About (Pers.) | Science & Tech. | 50.325962 | 95,614,895 |
Large areas of Mars' surface are covered by oxidative weathering products containing ferric and sulfate ions having analogies to terrestrial gossans derived from sulfide mineralization associated with iron-rich basalts. Chemical weathering of such massive and disseminated pyrrhotite-pentlandite assemblages and host bas... | <urn:uuid:d3f89e85-5507-4b87-87f2-3b9f002d6920> | 3.09375 | 218 | Knowledge Article | Science & Tech. | -9.303448 | 95,614,904 |
The recycling of precious metals, for example, platinum, is an essential aspect of sustainability for the modern industry and energy sectors. However, due to its resistance to corrosion, platinum-leaching techniques rely on high reagent consumption and hazardous processes, for example, boiling aqua regia; a mixture of ... | <urn:uuid:d9f91a70-c68e-4cbe-bb8c-c4b310e66181> | 3.21875 | 3,911 | Academic Writing | Science & Tech. | 27.659659 | 95,614,917 |
Lie bracket of vector fields
In the mathematical field of differential topology, the Lie bracket of vector fields, also known as the Jacobi–Lie bracket or the commutator of vector fields, is an operator that assigns to any two vector fields X and Y on a smooth manifold M a third vector field denoted [X, Y].
Conceptuall... | <urn:uuid:328828ef-732b-4081-9ba2-1e7d700587ea> | 3.09375 | 1,337 | Knowledge Article | Science & Tech. | 59.681233 | 95,614,944 |
1. Use the theorem below to determine the number of nonequivalent colorings of the corners of a rectangle that is not a square with the colors red and blue. Do the same with p colors.
(the answer is (p^4+3p^2)/4...i just dont know how to get there)
Theorem: Let G be a group of permutations of X and let C be a set of co... | <urn:uuid:a884ca29-dd16-4211-af98-c19b512d8704> | 3.328125 | 573 | Q&A Forum | Science & Tech. | 92.402268 | 95,614,959 |
Biological membrane(Redirected from Membrane-bound)
A biological membrane or biomembrane is an enclosing or separating membrane that acts as a selectively permeable barrier within living things. Biological membranes, in the form of eukaryotic cell membranes, consist of a phospholipid bilayer with embedded, integral and... | <urn:uuid:a44c49a6-c3f6-4e4a-899d-c0e7c17b8f7a> | 4.0625 | 3,478 | Knowledge Article | Science & Tech. | 35.2032 | 95,614,961 |
Washington: The creation of a 3-D nanocone-based solar cell platform has allowed a team of scientists to boost the light-to-power conversion efficiency of photovoltaics by nearly 80 percent.
The team led by Oak Ridge National Laboratory`s Jun Xu discovered the technology substantially overcomes the problem of poor tran... | <urn:uuid:ba590d84-3c6c-4015-966b-9424e4d54af0> | 3.75 | 519 | News Article | Science & Tech. | 15.210354 | 95,614,975 |
Images: Thomas Eisner/Cornell University; © Cornell University
Talk about multi-tasking. A new study reveals that in the St. John’s Wort plant, Hypericum calycinum, the same chemical not only attracts pollinating insects but also deters herbivores that pose a threat to its survival. The findings appear in the current i... | <urn:uuid:a860986d-a5a7-49b0-a69b-4142b146a482> | 3.53125 | 1,037 | Content Listing | Science & Tech. | 36.791882 | 95,614,984 |
Scientists from the MPQ, LMU, and the FUB analyse how fast order can appear in a quantum-mechanical system.
During the freezing of water, the initially unordered molecules start to form an ordered crystal, namely ice. During this phase transition, they rearrange from an unordered into a more ordered state. This setting... | <urn:uuid:d7f5f878-4040-418e-97f7-d9e165399b2e> | 2.96875 | 2,003 | Content Listing | Science & Tech. | 36.797954 | 95,615,010 |
Hurricane response crews from the U.S. Geological Survey have installed storm-tide sensors at key locations along the northeast shores of Puerto Rico in advance of Hurricane Irma. Under a mission assignment from the Federal Emergency Management Agency, the USGS deployed nine sensors.
This U.S. Geological Survey Storm-T... | <urn:uuid:ed16dd20-8d1d-41aa-b188-230ad1609f32> | 3.078125 | 734 | News Article | Science & Tech. | 30.121831 | 95,615,028 |
An 0.50 kg object is attached to one end of a spring, and the system is set into simple harmonic motion. The displacement x of the object as a function of time is shown in the drawing below. With the aid of this data, determine the following values.
(a) amplitude A of the motion
(b) angular frequency
(c) spring constan... | <urn:uuid:47652aa9-423a-4be6-982c-1cfa76626049> | 4.28125 | 225 | Tutorial | Science & Tech. | 85.404302 | 95,615,037 |
The construction of airborne observatories, high mountaintop observatories, and space observatories designed especially for infrared and submillimeter astronomy has opened fields of research requiring new optical techniques. A typical far-IR photometric study involves measurement of a continuous spectrum in several pas... | <urn:uuid:803ec639-bc39-4721-bfba-69243e9763db> | 3.5625 | 219 | Academic Writing | Science & Tech. | 14.250714 | 95,615,045 |
In 1939, the National Academy of Sciences awarded a grant to the Suicide Squad, a group of three students experimenting with rockets at Caltech, now more formally known as the GALCIT (Guggenheim Aeronautical Laboratory at the California Institute of Technology) Rocket Research Project.
It came just in time.
Until then,... | <urn:uuid:5786b269-396f-40c9-874f-aa608f4105ed> | 2.90625 | 2,563 | Nonfiction Writing | Science & Tech. | 55.094929 | 95,615,081 |
The unity of physical theory and its mathematical formalism
- 23 Downloads
The relation between the physical theory and its mathematical formalism is shown.
KeywordsMathematical Formalism Maxwell Equation Physical Theory Physical Picture Mathematical Apparatus
These keywords were added by machine and not by the authors... | <urn:uuid:17763061-fdfb-4d40-98e5-674ab0946856> | 2.578125 | 226 | Truncated | Science & Tech. | 47.076053 | 95,615,115 |
All submissions for this problem are available.
A common word puzzle found in the XXX College magazine is the word metamorphism. By taking a starting word and successively altering a single letter to make a new word, one can build a sequence of words which changes the original word to a given end word. For instance, th... | <urn:uuid:7cd89217-2988-45b1-bad0-b9cbf15a5c01> | 3.296875 | 595 | Tutorial | Software Dev. | 57.611739 | 95,615,126 |
Unlocking the secrets of regeneration: Study discovers how salamanders replace limbs - and it may help humans do the same
- Study has identified a biological pathway that controls regeneration
- Called ERK, it must be constantly active for salamander cells to reprogram
- This activity is not seen in the cells of other ... | <urn:uuid:2e9c904c-29d5-4791-9777-d23704386d56> | 3.0625 | 1,007 | Truncated | Science & Tech. | 18.507764 | 95,615,132 |
Using atoms cooled to just billionths of a degree above absolute zero, a team led by researchers at Princeton University has discovered an intriguing magnetic behavior that could help explain how high-temperature superconductivity works.
The researchers found that applying a strong magnetic field to these ultracold ato... | <urn:uuid:e7bffe3c-e24d-4a16-a275-bfe8bff7a9f6> | 3.890625 | 2,207 | Content Listing | Science & Tech. | 37.088817 | 95,615,138 |
The aim of the present study was to characterize the patterns of gastropod shell utilization by the hermit crab Clibanarius zebra (Dana, 1852) from four different sites along the Saurashtra coast, Gujarat state, India. A total of 404 individuals of hermit crab were captured (223 males, 147 females and 34 ovigerous fema... | <urn:uuid:bff94ae4-859e-4b8b-82b1-f3b553a1b4c3> | 2.609375 | 302 | Academic Writing | Science & Tech. | 44.599632 | 95,615,140 |
When laser light strikes a white wall or just some surface in space, a speckle pattern is observed. An example is given in Fig. 6.1. As a similar phenomenon is not observed with incandescent light or light from a spectral lamp, it must be a special property of laser light. Indeed, it is the special coherence properties... | <urn:uuid:463585ae-dc64-409a-a0d4-d4be7614fbab> | 3.484375 | 262 | Truncated | Science & Tech. | 54.703435 | 95,615,153 |
Comparing the Ignitability of Mulch Materials for a Firewise Landscape
AffiliationPlant Sciences, School of
MetadataShow full item record
AbstractEight different landscape mulches were tested for their flammability using a propane torch, charcoal briquette, and a cigarette at two different times of the year. Three rand... | <urn:uuid:eab84582-91f8-47c1-bf37-332040a2a3cc> | 2.703125 | 249 | Structured Data | Science & Tech. | 19.631136 | 95,615,182 |
Identification of hydrogeochemical processes and their influence on groundwater quality for drinking and agricultural usage in Wadi Nisah, Central Saudi Arabia
Groundwater quality of a region is often controlled by the geochemical processes that operate with respect to the aquifer-water interaction, especially in arid ... | <urn:uuid:c34f59c4-6a13-43bc-95c2-63ce0c9c3233> | 2.59375 | 777 | Academic Writing | Science & Tech. | 32.352929 | 95,615,201 |
Revealed, Nasa's plan to save the Earth: Space agency reveals mock-up of a robot that will lasso an asteroid in 2021 and place it in orbit around the moon so astronauts can test deflection systems and train for Mars missions
- A Nasa robot ship is planning to visit a comet and pluck a large boulder off an asteroid in D... | <urn:uuid:be644019-1ef5-4790-bdc6-862d4cf45afb> | 3.21875 | 3,223 | News Article | Science & Tech. | 30.520465 | 95,615,209 |
Filtration is the final physical barrier preventing the passage of microbial pathogens into public drinking water. Proper pre-treatment via coagulation is essential for maintaining good particle removal during filtration. To improve filter performance at the Elgin Area WTP, artificial neural network (ANN) models were a... | <urn:uuid:e91b1fb9-88f9-42f1-8442-31f0839fa0ff> | 2.953125 | 248 | Academic Writing | Science & Tech. | 40.855459 | 95,615,242 |
Predicted abundance of seabirds in open sea. Summer season
CitationFauchald P, Vang R (2017). Predicted abundance of seabirds in open sea. Summer season. Version 1.3. Norwegian Institute for Nature Research. Metadata dataset https://doi.org/10.15468/bapwbd accessed via GBIF.org on 2018-07-18.
DescriptionThe maps consis... | <urn:uuid:7307885e-c9cd-47a3-8f38-9a3cc2912b09> | 2.828125 | 392 | Academic Writing | Science & Tech. | 35.924259 | 95,615,247 |
Solar eclipse: U-M experts can discuss
Joel Bregman, the H.D. Curtis Professor of Astronomy, is an expert in X-ray observation and theory, which he uses to account for the “missing baryons,” or normal matter, in galaxies.
“For those in the path of totality, when the sun is fully eclipsed, you’ll be able to see stars an... | <urn:uuid:1b69be35-1301-439a-a86e-302762f22dd9> | 3.03125 | 1,158 | News (Org.) | Science & Tech. | 57.487381 | 95,615,260 |
Designing an artificial leaf that uses solar energy to convert water cheaply and efficiently into hydrogen and oxygen is one of the goals of BISfuel – the Energy Frontier Research Center, funded by the Department of Energy, in the Department of Chemistry and Biochemistry at Arizona State University.
An artificial photo... | <urn:uuid:90d579f1-3f86-4ead-a879-05885fb4a77a> | 3.8125 | 1,338 | Content Listing | Science & Tech. | 35.09642 | 95,615,262 |
Particle Physics Tutorial 3 - Photons
The electromagnetic spectrum is a family of waves that have the following properties:
They are transverse;
They all travel at 300 million m s-1 (3 × 108 m s-1) in a vacuum.
They can travel in a vacuum, so need no material to travel in.
They are made up of an electric field and a ma... | <urn:uuid:a666326b-7cf2-4729-a501-fdd62aa02876> | 4.15625 | 1,161 | Tutorial | Science & Tech. | 74.925417 | 95,615,265 |
Ancient volcanism offers a glimpse into the future effects of climate change.
The Earth’s ‘young’ phase might have been much shorter than we assume.
This is not about conspiracy theories, but a legitimate scientific concern.
An incoming mass extinction isn’t as hard to spot as we’d believed.
A team of researchers force... | <urn:uuid:9967e2f3-5eb4-4138-bdbe-21d382d53797> | 3 | 344 | Content Listing | Science & Tech. | 56.057362 | 95,615,293 |
Prior to albert Einstein’s theory of special relativity there was always an idea about relativity. Through Galilean transformations, which worked perfectly with the newton’s laws of motion, people had formed a vague idea that all motion in this world is relative to something else. There came up the mysterious thing cal... | <urn:uuid:98801303-91d1-4422-b5fd-bc975cf24021> | 4.25 | 2,863 | Academic Writing | Science & Tech. | 48.047701 | 95,615,298 |
PHIL 160: Lecture 2. Science news… Some background on the Tevatron and the (never-built) Superconducting Super Collider
Welcome to Fermilab!
Our mission is to discover what the universe is made of and how it works.
We're asking three simple, challenging questions here at the frontier of particle physics:What is the nat... | <urn:uuid:59d698ea-cb18-4375-bf32-b12d1476b029> | 3.515625 | 843 | Audio Transcript | Science & Tech. | 39.780313 | 95,615,304 |
about this item
The work of engineers surrounds us: from the phones in our pockets to the layout of our cities. But the skills that brought the world clean water and telecommunications also produced polluting technologies that could threaten its future.
Engineering explores the scientific, social, and philosophical imp... | <urn:uuid:afdb1842-9468-47a7-9733-570d3a0a5917> | 3.203125 | 124 | Truncated | Science & Tech. | 25.471077 | 95,615,327 |
The search for volcanoes is a long-running thread in the exploration of Venus. “Volcanoes are a key part of a climate system,” says Fred Taylor, a Venus Express Interdisciplinary Scientist from Oxford University. That’s because they release gases such as sulphur dioxide into the planet’s atmosphere.
On Earth, sulphur c... | <urn:uuid:3d1f97b1-b62b-4dd0-b740-0c7fd6fc517f> | 4.125 | 1,293 | Content Listing | Science & Tech. | 43.316328 | 95,615,340 |
Quantum sensors—qubits sensitive to external fields—have become powerful detectors for various small acoustic and electromagnetic fields. A major key to their success have been dynamical decoupling protocols which enhance sensitivity to weak oscillating (AC) signals. Currently, those methods are limited to signal frequ... | <urn:uuid:ce69e9d5-b4d9-45b9-95fb-725bf59ab0ad> | 2.796875 | 3,729 | Academic Writing | Science & Tech. | 37.550299 | 95,615,360 |
Based on a discipline of geology called stratigraphy, rock layers are used to decipher the sequence of historical geological events.Relative techniques can determine the sequence of events but not the precise date of an event, making these methods unreliable.Today, many different radioactive elements have been used, bu... | <urn:uuid:765da60f-1d15-4ef9-b85e-41058aed209e> | 3.90625 | 425 | Knowledge Article | Science & Tech. | 19.44596 | 95,615,367 |
Copy a human? I can do that with my eyes closed! Blindfolded dolphin mimics trainer's movements by using sound waves to 'see' what he is doing
- Scientists have shown that when a dolphin is blindfolded, it can use other senses to mimic a human's movements
- Tanner the dolphin used echolocation when blindfolded to repli... | <urn:uuid:961ab4f3-fe0e-4379-9017-9ceebf061276> | 2.796875 | 1,581 | News Article | Science & Tech. | 30.593012 | 95,615,371 |
|Debugging with GDB|
python-interactivecommand can be used to start an interactive Python prompt. To return to gdb, type the
EOFcharacter (e.g., Ctrl-D on an empty prompt).
Alternatively, a single-line Python command can be given as an argument and evaluated. If the command is an expression, the result will be printed;... | <urn:uuid:4028b56f-870f-4c54-bf51-9e836dfe752f> | 3.109375 | 341 | Documentation | Software Dev. | 53.548534 | 95,615,375 |
The results from the Wide Area Search for Planets (SuperWASP) will be announced by team member Dr Don Pollacco of Queen’s University Belfast, in his talk at the RAS National Astronomy Meeting (NAM 2008) on Tuesday 1 April.
Scientists have found more than 270 extrasolar planets since the first one was discovered in the ... | <urn:uuid:37839604-b936-4aaa-ad47-69efda4e0af9> | 3.1875 | 1,139 | Content Listing | Science & Tech. | 47.032813 | 95,615,420 |
- Open Access
Differences in the male mating calls of co-occurring epauletted fruit bat species (Chiroptera, Pteropodidae, Epomophorus wahlbergi and Epomophorus crypturus) in Kruger National Park, South Africa
© Adams and Snode; licensee Springer. 2015
Received: 25 April 2014
Accepted: 16 December 2014
Published: 16 Ja... | <urn:uuid:45ae2d2c-f1b2-4f6d-8db9-8e32ebe24523> | 2.859375 | 3,837 | Academic Writing | Science & Tech. | 35.031669 | 95,615,422 |
Recent interest in using marine reserves for marine resource management and conservation has largely been driven by the hope that reserves might counteract declines in fish populations and protect the biodiversity of the seas. However, the creation of reserves has led to dissension from some interested groups, such as ... | <urn:uuid:0b3c9a24-0e8e-4686-897c-26ab925adcb9> | 3.140625 | 267 | Academic Writing | Science & Tech. | 4.848898 | 95,615,434 |
P1.186 Wednesday, Jan. 4 A Seven Year Study of Shell Use by Coenobita clypeatus(/i)> on Cayos Cochinos Mejor, Bay Islands, Honduras GILCHRIST, Sandra L; New College of Florida, Sarasota firstname.lastname@example.org
Adult land hermit crabs, Coenobita clypeatus (J.C. Fabricius 1787), must find shells or other abdominal... | <urn:uuid:351430d9-077d-499e-a522-fdc8fb9d7877> | 3.46875 | 365 | Academic Writing | Science & Tech. | 45.574064 | 95,615,441 |
The J/ψ meson is a subatomic particle, a flavor-neutral meson consisting of a charm quark and a charm antiquark. Mesons formed by a bound state of a charm quark and a charm anti-quark are generally known as "charmonium". The J/ψ is the first excited state of charmonium. The J/ψ has a rest mass of 3.0969 GeV/c², and a m... | <urn:uuid:f11e5b8e-569f-4d56-8659-20d8029c5d62> | 2.984375 | 410 | Structured Data | Science & Tech. | 56.941737 | 95,615,449 |
The Tropical Rainfall Measuring Mission or TRMM satellite passed over Tropical Storm Iselle and gathered data on clouds and rainfall as it affected Hawaii.
Iselle was once a rather powerful category 4 hurricane in the East Pacific with sustained winds estimated at 120 knots (~138 mph) by the National Hurricane Center. ... | <urn:uuid:0a09d381-4fea-42f4-a952-e63bdbf4ece7> | 2.703125 | 1,388 | Content Listing | Science & Tech. | 49.270101 | 95,615,451 |
The acceleration of a marble in a certain fluid is proportional to the speed of the marble squared and is given in SI units) by a=-3.00 v^2 for v greater than 0. If the marble enters this fluid with a speed of 1.20 m/s, how long will it take before the marble's speed is reduced to half of its initial value?© BrainMass ... | <urn:uuid:581cb555-7ab2-4de2-8f28-aa96df6da8f9> | 3.90625 | 160 | Q&A Forum | Science & Tech. | 94.192361 | 95,615,470 |
Two-component regulatory system
|His Kinase A (phospho-acceptor) domain|
solved structure of the homodimeric domain of EnvZ from Escherichia coli by multi-dimensional NMR.
|Signal transducing histidine kinase, homodimeric domain|
structure of CheA domain p4 in complex with TNP-ATP
|Histidine kinase N terminal|
|Osmosen... | <urn:uuid:dd733a81-3b71-4681-967e-6cc4e92a4730> | 2.6875 | 4,828 | Knowledge Article | Science & Tech. | 56.39168 | 95,615,472 |
Cold streak from polar vortex sweeping Midwest, Northeast expected to reach Peninsula toward week's end
Frigid weather has swept across the northern United States, and the Midwest, New England and Mid-Atlantic are next, according to projections from the National Weather Service.
Toward the end of the week, the Peninsul... | <urn:uuid:f967b907-f5df-45b3-b986-9980015a1d4b> | 2.609375 | 491 | News Article | Science & Tech. | 55.99019 | 95,615,481 |
Such an acoustic veil would do for sound what the "invisibility cloak" previously demonstrated by the research team does for microwaves--allowing sound waves to travel seamlessly around it and emerge on the other side without distortion.
"We've devised a recipe for an acoustic material that would essentially open up a ... | <urn:uuid:729ac501-df27-42fc-81c6-3be30a7a9c74> | 3.65625 | 689 | News Article | Science & Tech. | 40.334757 | 95,615,495 |
Climate Science in Focus: Data and Tools
- Grade Level:
- High School: Ninth Grade through Twelfth Grade
- Lesson Duration:
- 60 Minutes
- Common Core Standards:
- 9-10.RST.1, 9-10.RST.2, 9-10.RST.5, 9-10.RST.7, 9-10.RST.9
- Additional Standards:
- Thinking Skills:
- Understanding: Understand the main idea of material ... | <urn:uuid:1e4a1faa-f208-47d7-be9c-790574ea3544> | 3.71875 | 1,063 | Tutorial | Science & Tech. | 39.168299 | 95,615,515 |
Atomic Layer Deposition Like Wolverine's
Super-strong spider silk has been produced using a process that sounds like it might produce a superhero itself - atomic layer deposition. The researchers were inspired by nature; mandibles of leaf-cutter ants and locusts are peppered with zinc, making them stronger and more dur... | <urn:uuid:9aa2f22b-89ca-40dd-a669-3e65bc1f71ab> | 2.84375 | 1,243 | Content Listing | Science & Tech. | 58.934321 | 95,615,536 |
Odd Biochemistry Yields Lethal Bacterial Protein
News Jan 23, 2013
They found that a single enzyme helps form distinctly different, three-dimensional ring structures in the protein, one of which had never been observed before.
The new findings, reported in Nature Chemical Biology, should help scientists find new ways t... | <urn:uuid:a4069213-b48f-46b3-beb7-656897ead2b4> | 3.203125 | 1,168 | News Article | Science & Tech. | 25.883575 | 95,615,562 |
Solar Power Stops Working Well When It’s Hot Outside
Don’t expect recent heat waves hitting the southwest to make solar panels produce more energy, according to an industry representative.
High temperatures decrease a photovoltaic solar cell’s output by between 10 and 25 percent, Stuart Fox, a vice president at the gre... | <urn:uuid:0b54d8a7-31e9-4d08-840b-432b7d54266d> | 3 | 510 | News Article | Science & Tech. | 35.701233 | 95,615,565 |
Mars is not hollow; is it?
Is Mars Hollow? We are pretty sure it is not, but no one can be certain however we might soon know. The reason such a question is asked is because of questions about the Earth and the time it takes for sound waves to travel through it. And the speed of the spin rate of Mars, the question of m... | <urn:uuid:38caad75-3e72-4ddc-8632-83e2b2e1f095> | 2.84375 | 1,832 | Content Listing | Science & Tech. | 52.838478 | 95,615,567 |
the Physics Central
the American Physical Society
This article describes research on systems made up of small granular pieces, such as sand piles or containers of grain. In these "Collective" systems, the interactions of each of the grains with a few neighbors determines the properties of large systems.
%0 Electronic S... | <urn:uuid:9e0bc93d-7365-4ddd-ae98-a00c3c4d0e9b> | 2.9375 | 161 | Truncated | Science & Tech. | 39.421394 | 95,615,576 |
Honey bees are the most effective pollinators of many agricultural crops and vitally important to food production.
Honey bee health is a topic of considerable concern due to massive deaths of bee colonies in the USA and Europe. Recently, the European Union reacted by promising more resources for honey bee research, est... | <urn:uuid:5ca71e12-5db4-489b-bd41-c3d4f8fb65d7> | 3.46875 | 1,221 | Content Listing | Science & Tech. | 40.342708 | 95,615,580 |
1. How can the different kinds of electromagnetic radiation be described?
Please see attached for full problem.© BrainMass Inc. brainmass.com July 17, 2018, 9:50 am ad1c9bdddf
The electromagnetic waves (wave nature) or radiations (energy nature) are comprised of electric and magnetic field vectors vibrating perpendicul... | <urn:uuid:fe6c7ed1-3ba0-406f-9615-d89edb3c609e> | 3.375 | 159 | Q&A Forum | Science & Tech. | 45.803026 | 95,615,591 |
Thermoluminescence of Solids
McKeever gives us a comprehensive survey of thermoluminescence, an important, versatile, and widely used experimental technique. Bringing together previously isolated specialized approaches, he stresses the importance of the solid state aspects of the phenomenon. The book contains chapters ... | <urn:uuid:d0b1325c-9868-4594-b7a4-0bf98aabaf01> | 2.765625 | 294 | Product Page | Science & Tech. | 8.836529 | 95,615,594 |
At the Hubrecht Laboratory in Utrecht, the biologist Sylvia Fischer has discovered how organisms protect themselves against transposons. Transposons are pieces of DNA which can translocate themselves within the genome. Sometimes transposons cause damage to the DNA. Plants probably have a similar mechanism which protect... | <urn:uuid:53613735-5da7-4490-a44f-7954af185184> | 3.6875 | 873 | Content Listing | Science & Tech. | 40.622842 | 95,615,607 |
Introduction To C Programming reema thareja Pdf free Download
Generic methods combine specialization develops strong learners solve complex. It covers concepts useful 6 game patterns. 6996, don visual basic, teachers free open curriculum with. Beginner-friendly tutorials written plain English hi pon. Didn, many ways mo... | <urn:uuid:b5949b5c-dbe8-4dbe-b167-9ea94759e502> | 2.625 | 662 | Spam / Ads | Software Dev. | 25.435527 | 95,615,614 |
See the attached file.
1) Compute the Cayley tables for the additive group Z and for the multiplicative group
Z of non-zero elements in Z.
2) Let G be a group written additively. Recall that the order of an element a is the
minimal natural number n such that na = 0. If such n does not exits then one says that
the order... | <urn:uuid:90d3c59b-38ba-4720-bbe3-27ec4680cc33> | 3.09375 | 459 | Q&A Forum | Science & Tech. | 68.875543 | 95,615,660 |
- Open Access
The 2004 Indian Ocean tsunami: Tsunami source model from satellite altimetry
© 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. ... | <urn:uuid:1befdc4c-29ba-4447-a6c8-7ee76ac56420> | 3 | 331 | Truncated | Science & Tech. | 32.137169 | 95,615,661 |
"When our earliest ancestors started walking on two legs, they took the first steps toward becoming human," said lead researcher Michael Sockol of UC Davis. "Our findings help answer why."
The research appears this week in the online early edition of the Proceedings of the National Academy of Sciences. It will appear i... | <urn:uuid:64e87f1a-1025-4a30-9b46-593f9c51b04e> | 3.65625 | 1,392 | Content Listing | Science & Tech. | 42.686735 | 95,615,690 |
28 April 2017
Marvel at the images from Cassini’s first Grand Finale orbit
On 26 April, the Cassini spacecraft swung between Saturn and its rings, closer than any spacecraft has ever been before. This was the start of its Grand Finale, which will end with its demise as it crashes into the planet. Here are some of the a... | <urn:uuid:4ca92bc9-db80-4dc2-9d47-c2cedc5dbe4c> | 2.765625 | 310 | Truncated | Science & Tech. | 48.977045 | 95,615,704 |
From Gambit wiki
Revision as of 21:28, 4 October 2008 by Mikaelm
Scheme in a nutshell
- Scheme is a dialect of the Lisp programming language developed in the 70s, that inherently supports functional programming but is easily multi-paradigm.
- Scheme is one of the two most major Lisp dialects, the other one being Common... | <urn:uuid:a0c164f5-31dc-4def-b068-1af7488b5623> | 3.5 | 329 | Knowledge Article | Software Dev. | 36.615305 | 95,615,707 |
Frogs are potentially sensitive indicators of road impacts, with studies indicating particular susceptibility to road mortality. Calling, i.e., breeding, behavior could also be affected by traffic noise. We investigated effects on frog abundance and calling behavior where a busy highway crosses rainforest stream breedi... | <urn:uuid:2d0f8d3b-540d-4c3c-acb7-d7d1e0c1a15b> | 3.359375 | 357 | Academic Writing | Science & Tech. | 24.290613 | 95,615,729 |
Cell replacement therapy offers a novel and powerful medical technology. A type of embryonic stem cell, called a neural crest stem cell, that persists into adulthood in hair follicles was recently discovered by Maya Sieber-Blum, Ph.D., of the Medical College of Wisconsin, Milos Grim, MD Ph.D., of Charles University Pra... | <urn:uuid:b5d60f10-da56-41e5-a8cb-f026f015c96f> | 3.25 | 879 | Content Listing | Science & Tech. | 36.085466 | 95,615,749 |
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Microwave Imager Measures Sea Surface Temperature Through Clouds
This page contains archived content and is no longer being updated. At the time of publication, it represented the best available science. ... | <urn:uuid:e1c00459-0019-42e1-a1fc-6812ee6ebae3> | 3.734375 | 553 | Knowledge Article | Science & Tech. | 38.544474 | 95,615,758 |
Published by the American Geophysical Union as part of the Global Geoscience Transects Series, Volume 5.
The Global Geoscience Transects Project (GGT) is an ambitious international effort that draws together geoscientists in a variety of disciplines to produce the best possible portrayal of the composition and structur... | <urn:uuid:f7fdf184-9849-484e-9e2a-48732c4b4509> | 3.390625 | 367 | Knowledge Article | Science & Tech. | 30.851271 | 95,615,762 |
These strategies could be considered intelligent, calculated actions, since viruses can either take over some of the cell’s components and use them for their own benefit or deactivate particular functions of the cell in order to allow for a more effective and trouble free infection process.
This very interesting subjec... | <urn:uuid:f3f9565f-c0c4-4810-aa30-21a2a50297d4> | 2.75 | 1,110 | Content Listing | Science & Tech. | 36.615769 | 95,615,774 |
Radiation emerging from bending magnets in synchrotrons and storage rings is increasingly utilized as far-infrared sources. Such source can be by two or three orders of magnitude brighter than a black body at 2000 K, at all infrared wavelengths. On the other hand, the total flux (13 (number of photons/sec/unit bandwidt... | <urn:uuid:0ec5c1af-2920-48a8-909e-6f367ff9b0d5> | 3.140625 | 204 | Knowledge Article | Science & Tech. | 61.914597 | 95,615,778 |
The use of electronic computers has increased our knowledge of the electronic structure of solids essentially. The significance of large scale computation can be shown by the development of the semiconductor model within the last twenty years. When — after the discovery of the transistor — an intensive investigation of... | <urn:uuid:8d9f8ad9-3a2b-452c-9cd9-cbefb8cffcfb> | 3.46875 | 194 | Truncated | Science & Tech. | 24.218328 | 95,615,783 |
|MLA Citation:||Bloomfield, Louis A. "Question 1260"|
How Everything Works 17 Jul 2018. 17 Jul 2018 <http://howeverythingworks.org/print1.php?QNum=1260>.
When dc current passes through the primary coil of wire, the coil does have a magnetic field around it, but it doesn't have an electric field around it. The electric ... | <urn:uuid:48f7e33d-0294-446a-bc23-a99fa42e5189> | 3.546875 | 226 | Knowledge Article | Science & Tech. | 62.810151 | 95,615,803 |