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Chemistry of Manganese
Table of contents
In today's society, Manganese is one of the few elements that humans use on a daily basis. In 1774, a Swedish scientist named Johann Gottlieb Gahn was able to isolate manganese metal by reducing the compound of manganese dioxide. Remarkably enough, manganese has been used by hum... | <urn:uuid:815393d6-6130-4cc5-8896-c2cb25d67213> | 3.53125 | 1,270 | Knowledge Article | Science & Tech. | 37.237277 |
It has a lot of interesting numbers and references to papers that have studied extremes in various locales. But it seems to me you can always find extremes somewhere on the planet (more on that in my next post).
First, on the physical reasons why more extremes should occur in a warming world, they write:
"For some type... | <urn:uuid:56b798cb-b988-425a-adbd-36438f2a97cf> | 2.953125 | 813 | Personal Blog | Science & Tech. | 43.327935 |
Another entry in the "is function arbitrary" series...
One of the most commonplace motifs in RNA molecules is the hairpin. The basic idea is this: the 'primary' structure of a strand of RNA is the sequence of bases, GCAU. But function doesn't depend on the primary sequence. That sequence has to be folded up into three ... | <urn:uuid:7f8cc92b-0637-4575-af57-d1f46a6f1a0e> | 3.40625 | 528 | Personal Blog | Science & Tech. | 54.954503 |
Here is a quick guide to doing problems involving the work energy theorem, to help you do your physics homework or assignment:
The work energy theorem states that the work done is equal to the change in kinetic energy:
where the kinetic energy is:
1. On a frozen pond, a 10-kg sled is given a kick that imparts to it an ... | <urn:uuid:2972d339-dcfc-4c84-a514-443388ee4fd3> | 4.40625 | 446 | Tutorial | Science & Tech. | 55.747936 |
One of the most important factors in building high-performance, scalable Web applications is the ability to store items, whether data objects, pages, or parts of a page, in memory the initial time they are requested. You can cache, or store, these items on the Web server or other software in the request stream, such as... | <urn:uuid:8917e9f8-9f3a-4eb2-aa6f-164fa9cf1f87> | 2.8125 | 256 | Documentation | Software Dev. | 35.617388 |
Far Side of the Moon
Happy Thanksgiving to the US!
Despite uncertainties in budgets and the world, work is continuing on the Orion Crew Exploration Vehicle. On December 14 Orion will be displayed at the Michoud Assembly Facility to mark completion of the Ground Test Article. Congress has approved funding for a Heavy Li... | <urn:uuid:63301e07-1499-4cb7-bc08-40ac88a0c46b> | 2.734375 | 505 | Personal Blog | Science & Tech. | 60.619398 |
In an article yesterday in the Guardian UK, the paper reports that Canadian provincial governments and aboriginal leaders have set aside vast amounts of coniferous woods, wetlands and peats, and the conservation bans logging, mining and oil drilling on an area twice the size of California.
The article mentions how the ... | <urn:uuid:6a643445-c5f4-42da-a32c-ab2abd61dd41> | 2.703125 | 175 | Personal Blog | Science & Tech. | 32.375635 |
Neighbour-Sensing model is the proposed hypothesis on how forms and shapes arise in the world of fungi.Audrius Meskauskas and David Moore in 2004.
The hypothesis suggests that each hypha (thread) in the fungal mycelium generates certain abstract field that (like the known physical fields) decreases with the distance. F... | <urn:uuid:6d71eca8-19d8-4b60-b6ca-4bb6d0f69643> | 3.296875 | 733 | Knowledge Article | Science & Tech. | 33.372873 |
Science Fair Project Encyclopedia
In mathematics, a Diophantine equation is an equation between two polynomials with integer coefficients with any number of unknowns. A Diophantine problem is given as a Diophantine equation, whose solutions are the possible assignments of integers for the unknowns for which the equatio... | <urn:uuid:74a03c78-2beb-47b3-bcdb-8c8c80cf1e4b> | 3.734375 | 603 | Knowledge Article | Science & Tech. | 32.390398 |
Looking ahead to the Moon's shadow
When will you next be able to see the Moon block the Sun?
May 24, 2005
|Curious where the next 5 years' total solar eclipses will occur? How about the next 20 years'? Maybe one's coming to your locale or you'd like to experience the Moon's shadow in a foreign land. Fred Espenak has cr... | <urn:uuid:a4d91ce5-762a-40b2-89ac-c796bb0f7a24> | 2.96875 | 268 | Truncated | Science & Tech. | 60.393371 |
Dr. David Sibeck explains the instruments on the twin Van Allen Probes (formerly the Radiation Belt Storm Probes, RBSP). The Van Allen Probes will explore the Van Allen Radiation Belts in the Earth's magnetosphere. The charged particles in these regions can be hazardous to both spacecraft and astronauts. The mission al... | <urn:uuid:ad115fc6-7df9-4ceb-9c95-4ff0f3909c56> | 2.96875 | 105 | Truncated | Science & Tech. | 48.029342 |
Sep 26, 2005, 9:37 PM
Post #3 of 3
Copy of an article I wrote several years ago - relevant part highlighted in bold:
MEXICO'S ORANGE-COLORED PARASITIC PLANTS
There are numerous flowering parasitic plants in Mexico. Parasitic plants are those which live off the host plant and ultimately kill them, as opposed to epiphyte... | <urn:uuid:1ea8c766-a0d2-4d7b-9052-34483e256b57> | 3.15625 | 745 | Comment Section | Science & Tech. | 38.859773 |
The Lotus Effect describes water droplets rolling off leaf surfaces, removing dirt and contaminants in the process. This phenomenon can also be seen in the more common nasturtium. Scanning electron microscope images show that nasturtium leaves are covered by waxy nanocrystal bundles. The uneven surface created by these... | <urn:uuid:649ad1ea-11a6-4f00-a31a-0e893b319708> | 3.546875 | 202 | Knowledge Article | Science & Tech. | 22.885615 |
1 GROUCHO MARX
Physicists worry about what they call the Groucho Marx effectthat any universe simple enough to be understood is too simple to produce a mind capable of understanding it. The discovery of the Higgs boson right where physicists were looking for it is a great sign that the universe isn't too complicated fo... | <urn:uuid:9b8dacd7-b115-490f-a8ff-a6a8adcc925c> | 2.8125 | 348 | Truncated | Science & Tech. | 46.781304 |
Wild Things: Life as We Know It
Flamingos, T. rex Tails, Burmese monkeys and more...
- By Amanda Bensen, T.A. Frail, Megan Gambino, Jess Righthand and Sarah Zielinski
- Smithsonian magazine, January 2011
Liverworts are the most ancient plant group (Jan-Peter Frahm)
Plants that greened the earth 400 million years ago pr... | <urn:uuid:e368bfa6-aa35-497f-bf8d-74169be7f22d> | 3.375 | 384 | Content Listing | Science & Tech. | 43.552599 |
It is important to understand what part of the year, and what time of the day, severe weather is most likely. Those should be the times when your severe weather awareness is highest, as it is when you are most likely to be adversely impacted. Bear in mind though that tornadoes and severe weather can occur at any time o... | <urn:uuid:b4857f36-3211-48ee-84d8-940d7c978c88> | 3.6875 | 332 | Knowledge Article | Science & Tech. | 58.806826 |
by T. Peterson, Ph.D.
(the following text excerpt is taken from:
The Creator's Window -Viewing Global Change,
Universal timelines, & The Promise, © 2000)
Many scientists say time is growing short. You do not escape this reality by ignorance. Everyone must pause to seriously consider the nature and magnitude of recent o... | <urn:uuid:0c67c133-5bd7-4f37-8afc-9595c6e2b347> | 2.953125 | 2,554 | Knowledge Article | Science & Tech. | 33.980759 |
NINO3.4 sea surface temperature anomalies are a commonly used metric for the frequency, strength and duration of El Niño and La Niña events. For the week centered on Wednesday December 12, 2012, they’re close to zero—at about 0.02 deg C. As has been apparent for a few weeks, it looks like this year’s ENSO event will be... | <urn:uuid:4e125832-bfe5-48e0-8104-93d6ca15d879> | 3.296875 | 727 | Personal Blog | Science & Tech. | 51.018916 |
|- The Camera|
|- The Spectrographs|
|Details of the Data|
The SDSS survey collects data with modern, digital detectors. An enormous array of CCD detectors takes images, and a pair of spectrographs, fed by optical fibers, collects spectra.
The CCD Camera
The inner sanctum of the SDSS telescope contains what may be the ... | <urn:uuid:a0bdf519-8ac6-492b-923d-9311919fe693> | 4.1875 | 830 | Knowledge Article | Science & Tech. | 47.331253 |
For some time, it has been known that communications towers pose a hazard for many species of birds. The problem is exacerbated when towers are placed in centers of migratory activity. Bird kills at towers tend to come from two causes. Sometimes birds will not see a portion of the tower, such as a guy wire or antenna. ... | <urn:uuid:4b02040a-f2f7-4b54-a8ee-873267af2ee3> | 3.546875 | 323 | Personal Blog | Science & Tech. | 44.635375 |
DistributionRead full entry
Range DescriptionThe two disjunct subspecies are separated by 130° of longitude and about 8,500 km.
C. c. commersonii - Falkland Islands / Islas Malvinas and the coastal waters of southern South America. On the Atlantic coast the northern limit is at approximately Península Valdés. The range... | <urn:uuid:82391923-d423-4e7a-87e7-7036a959ce06> | 2.78125 | 469 | Structured Data | Science & Tech. | 53.942314 |
[erlang-questions] Code generation (was NOOB)
Tue Sep 5 23:32:10 CEST 2006
Jay Nelson wrote:
> Bjorn clarified some optimization approaches:
> > We have considered improving the optimization, so that no list would
>> be built in case 2.
> Where case 2 was the line commented <2> below:
>> foo(X) ->
>> A = [do_something(... | <urn:uuid:e72d1653-e050-48ed-8adb-f05062d94317> | 3.234375 | 365 | Comment Section | Software Dev. | 65.491562 |
A particular spring has a force constant of 2.5 X 103 N/m.
(a) How much work is done in stretching the initially-relaxed spring by 6.0 cm?
(b) How much more work is done in stretching the spring an additional 2.0 cm?
There are two (slightly) different ways to look at this problem. The first is to state that the work do... | <urn:uuid:a5d9354d-e854-4be6-bbd9-a4bcf27de023> | 2.953125 | 253 | Q&A Forum | Science & Tech. | 94.191842 |
Find a great variety of ways of asking questions which make 8.
What is the units digit for the number 123^(456) ?
Choose any 3 digits and make a 6 digit number by repeating the 3
digits in the same order (e.g. 594594). Explain why whatever digits
you choose the number will always be divisible by 7, 11 and 13. | <urn:uuid:8f1686e7-c48a-457c-bae2-e4fc022a2cf8> | 2.921875 | 80 | Q&A Forum | Science & Tech. | 86.951899 |
Giant Golden Mole - Chrysochloris trevelyani [now Chrysospalax trevelyani]
If there were ever a mammal worthy of being given the common name of “Blorp”, this would be it. But no, they get to be called the “giant golden mole”, despite not being all that giant, or all that golden. I’m still calling them Blorps.
These pud... | <urn:uuid:3e369b41-c752-4758-966b-8162c91a0564> | 3.359375 | 297 | Personal Blog | Science & Tech. | 32.247 |
Thermodynamics is a subsection of physics that deals with energy and its relationship with properties of matter. It is concerned with the different forms of energy and their transformation between one another. It provides the general laws that are the basis for energy conversion, transfer, and storage.
Systems, System ... | <urn:uuid:8975d272-1127-44cd-a31b-ec2519968f30> | 3.609375 | 470 | Knowledge Article | Science & Tech. | 33.600226 |
here are many Java user interface toolkits. The most common, of course, are AWT and Swing, each of which has its advantages and drawbacks. Swing in particular, while it looks great, can be burdensome to develop and leads to large code footprints. As an example, Figure 1 shows a very simple Swing GUI developed with the ... | <urn:uuid:f73625ce-ac51-4b76-bf99-b2fca5442107> | 2.859375 | 607 | Truncated | Software Dev. | 50.265369 |
2 Marine Research Plankton Survey Database
Plankton surveys and primarily, egg surveys, are another tool to
help fisheries scientists calculate biomass abundance [ Zeldis, J.
1993. The applicability of egg surveys for spawning stock biomass
estimation of snapper, orange roughy and hoki in New Zealand.
Bulletin of Marin... | <urn:uuid:917907aa-df06-4975-823e-7192464847c9> | 3.296875 | 532 | Knowledge Article | Science & Tech. | 41.309456 |
In this section, we discuss MPI's derived datatype mechanism. We also list MPI features not covered in this book.
In earlier sections of this chapter, MPI routines have been used to communicate simple datatypes, such as integers and reals, or arrays of these types. The final set of MPI functions that we describe implem... | <urn:uuid:a47a6a1e-2f9d-4b47-b483-77af57a2fed5> | 3.21875 | 1,396 | Documentation | Software Dev. | 34.955679 |
What would a tram look like if it was whizzing by at near-light speed? In this animation, created by Antony Searle from the Australian National University, you can see how its appearance would be altered due to the weird effects of special relativity.
In the first sequence, you're behind a static camera as the tram spe... | <urn:uuid:464cdbcd-8b10-4a19-835a-c3698ce4981b> | 3.796875 | 241 | Truncated | Science & Tech. | 58.060366 |
CREATE TABLE table [ (column [, ...] ) ] AS select_clause
The name of a new table to be created.
The name of a column. Multiple column names can be specified using a comma-delimited list of column names.
A valid query statement. Refer to SELECT for a description of the allowed syntax.
Refer to CREATE TABLE and SELECT f... | <urn:uuid:18620abf-a135-4e18-b2b8-3b611d1ce407> | 2.828125 | 122 | Documentation | Software Dev. | 48.761259 |
The Wild Side
Alumnus protects endangered Texas animals
Pockets filled with bug bits—cicadas, actually—are what Omar Bocanegra’s mom found every week in her son’s laundry. Young Omar was fascinated by nature, and boys always bring treasures home in their pockets.
Being a city kid, Bocanegra’s wildlife specimens were li... | <urn:uuid:d4d8ccd4-50ce-4b11-bba4-b8b8d8455d87> | 2.921875 | 378 | Nonfiction Writing | Science & Tech. | 43.863483 |
Parse tree. Another name: derivation tree (DT). The result of grammatical analysis. The parse tree differs from the abstract syntactical tree in that it contains nodes for those syntactic rules which do not influence the program semantics. A classical example of such nodes is grouping parentheses, while grouping of ope... | <urn:uuid:5c5e6001-1f77-4956-b078-399e36a4f77d> | 2.78125 | 127 | Knowledge Article | Software Dev. | 39.742475 |
I read in the newspaper this morning that a gentleman from Traverse City, Michigan found a dead shark in Lake Michigan. This did not surprise me. Rick Fasi discovered the two-foot long fish while boating and had it identified as a juvenile blacktip shark by an expert from the University of Florida. This species surpris... | <urn:uuid:3e5c85a5-8cbd-49d9-82bf-855641488fd3> | 2.953125 | 965 | Personal Blog | Science & Tech. | 54.899167 |
This is a guest post from Melissa Lott, a dual-degree graduate student in Mechanical Engineering and Public Affairs at the University of Texas at Austin. Her work includes a unique pairing of engineering and public policy in the field of energy systems research. Melissa has worked for YarCom Inc. as an engineer and con... | <urn:uuid:76d42833-d929-4511-9a27-57503fb8280a> | 2.890625 | 719 | Personal Blog | Science & Tech. | 43.446935 |
Southeast Area Monitoring & Assessment Program: South Atlantic - SEAMAP
Shallow Water Trawl Survey
MRRI staff, funded by the Southeast Area Monitoring and Assessment Program - South Atlantic (SEAMAP-SA) of the National Marine Fisheries Service (NMFS) have been conducting a shallow water trawl survey in the coastal zone... | <urn:uuid:873239aa-5e7d-4427-bfc6-e5412ff61e27> | 3.046875 | 382 | Knowledge Article | Science & Tech. | 26.281429 |
.NET Framework General CLR: What is the Common Language Runtime?
Q: What is the Common Language Runtime?
A: The .NET Framework provides a runtime environment which runs the code and provides services that make the development process easier. This runtime environment in .NET Framework is known as Common Language Runtime... | <urn:uuid:4a1f2760-43c0-477d-81a7-b52aebcb8107> | 3.109375 | 835 | Q&A Forum | Software Dev. | 25.573919 |
This may not be as exciting a post as the one about the internal differences between these two groups, but it has lots of useful tips for any budding paleontologists who want to know if they've found a brachiopod or a bivalve.
All in all, this comes down to symmetry. If you hold a brachiopod in your hand so that you ar... | <urn:uuid:01f549f2-58d0-4b92-9465-da4d9b2866a4> | 3.203125 | 251 | Personal Blog | Science & Tech. | 60.002488 |
Provided by: manpages-dev_3.27-1ubuntu2_all
makedev, major, minor - manage a device number
#define _BSD_SOURCE /* See feature_test_macros(7) */
dev_t makedev(int maj, int min);
int major(dev_t dev);
int minor(dev_t dev);
A device ID consists of two parts: a major ID, identifying the class of
the device, and a minor ID,... | <urn:uuid:595b224c-18b7-4f89-9914-a27084a1cdc3> | 2.796875 | 389 | Documentation | Software Dev. | 50.442166 |
Click on the "Create Excited State Band" button to the right of the energy level diagram. An excited state band appears. Then click the "Create Impurity State Band" button below, and an impurity state band appears below the excited state band. The are the bands in the material that is used to coat the insides of the fl... | <urn:uuid:c4071c9e-442c-4b9f-a3fe-757478680de7> | 3.390625 | 358 | Tutorial | Science & Tech. | 47.890782 |
I've recently come across a derivation, which I've not seen before, of mass increase in special relativity. It seems to make sense, but I get tripped-up on an intermediate step, and I can't seem to ...
In General Relativity Theory, mass can warp spacetime. However, in my view interaction only occurs between pieces of m... | <urn:uuid:bbcaa498-e5d2-4087-a4f6-129fb6009377> | 2.734375 | 215 | Q&A Forum | Science & Tech. | 53.601052 |
What Are Hydrothermal Vents?
Hydrothermal vents are places along the seafloor where hydrothermal fluid emerges and mixes with bottom seawater.
How Is Hydrothermal Fluid Produced?
When seawater percolates through fissures, or fractures, in the ocean crust, it is heated to temperatures that can reach well beyond 400°C or... | <urn:uuid:14ab8c6f-ef16-4e75-b646-da961edbbe3e> | 4.125 | 335 | Knowledge Article | Science & Tech. | 43.366324 |
May 19, 2013
Your search for Paleontology in Evolution returned 88 articles
A collection of articles and multimedia, lesson plans and other resources for teaching about Darwin and evolution.September 21, 2011, Wednesday
Lice are expert evolvers, and a new family tree of lice stretches so far back that the host of the f... | <urn:uuid:60cfd0e7-6664-4662-b9f0-2ee59f87077e> | 2.90625 | 435 | Content Listing | Science & Tech. | 42.282615 |
... What needs to be standardized, then, is not the language per-se, but the rules by which a language is selected. The IF statements. If you read through the standards documents on the IETF's website, you are not looking at a single, all-encompassing rule. You are looking at possibly a few thousand rules, with enough ... | <urn:uuid:5d5ef0b2-691e-4e96-931c-6e759a938ca3> | 2.75 | 140 | Comment Section | Software Dev. | 57.556288 |
Video:What Are Causes of Global Warmingwith Amrita Ngen
Scientists have determined some of the causes of global warming to be related to human activities. Learn more about the causes of global warming and what you can do to lessen your impact on the environment.See Transcript
Transcript:What Are Causes of Global Warmin... | <urn:uuid:cdaae494-9679-4cb0-8b00-3f71eeeda8a3> | 3.46875 | 358 | Truncated | Science & Tech. | 29.255828 |
Science Fair Project Encyclopedia
In computational complexity theory, NP ("Non-deterministic Polynomial time") is the set of decision problems solvable in polynomial time on a non-deterministic Turing machine. Or, equivalently, the set of decision problems that can be reformulated as a binary function A(x, y) over stri... | <urn:uuid:bd83d5fe-f45c-4a34-bff9-0cf599e8ab1d> | 3.34375 | 974 | Knowledge Article | Science & Tech. | 35.406479 |
cripting languages exist because some programming tasks are both simple and important, and carrying them out with a language that doesn't tax the mind as much as a system programming language sometimes will is beneficial. (See Sidebar: Scripting vs. Programming
for a full explanation of the differences between scriptin... | <urn:uuid:6f4c3ffa-0f0b-47d0-bccb-60e5001d66fc> | 3.4375 | 437 | Documentation | Software Dev. | 43.068099 |
Flexible thin-film solar panels to make harnessing solar energy more affordable
Major drawbacks in using silicone panels to harness solar energy are their cost and their bulky nature. However, very soon these may be problems of the past. Recently developed technology to produce thin-film solar panels can make them flex... | <urn:uuid:900dca17-d2a1-4390-9f9f-a3a69a9197c6> | 2.78125 | 202 | Truncated | Science & Tech. | 35.044798 |
Study of the use of gaseous xenon as a detector medium for hard x-ray astronomy
Hard x-ray detectors are used to study black holes, neutron stars and active galactic nuclei. In xenon gas the energy of an incident x-ray gets converted to scintillation light, the strength of which is proportional to the energy of the x-r... | <urn:uuid:d765feb7-6f48-40b2-b307-3ba768b166be> | 2.765625 | 220 | Content Listing | Science & Tech. | 45.095435 |
WHEN sperm whale mothers dive deep for squid their young cannot follow - so who looks after the kids?
Shane Gero of Dalhousie University in Halifax, Nova Scotia, Canada, and his colleagues tracked sperm whale populations in the Caribbean and Sargasso seas to see what happened when mothers dived for food. The Sargasso m... | <urn:uuid:7ed1ca00-7259-4b84-aaa4-b74a0d14fee3> | 3.890625 | 227 | Truncated | Science & Tech. | 50.138992 |
In this tutorial, We will discuss about <ul> tag in html5. The <ul> tag is used for defining a unordered list. The unordered list represented items as listing without number. The changing of the list item order will not affect the meaning of list . In The unordered list the list is created by <li> tag, and <ul> tag mus... | <urn:uuid:1b4b7074-be78-41dc-a188-739d3cd97460> | 3.4375 | 178 | Tutorial | Software Dev. | 68.938885 |
Buckyballs Jiggle Like Jello
This artist's animation illustrates vibrating buckyballs -- spherical molecules of carbon discovered in space for the first time by NASA's Spitzer Space Telescope. These molecules jiggle, shimmy and shake in a variety of ways -- 174 to be exact. Four of these vibrational modes cause the mol... | <urn:uuid:4756209f-aa91-49bf-8706-81c8cc22687a> | 3.046875 | 138 | Truncated | Science & Tech. | 34.199029 |
There are over 350,000 different species of beetles in the world which is close to 40% of all described insect species. This means that a staggering 1 in 4 of all animal species is a beetle.
Beetles are mostly land dwellers, but there are some species of beetle that live in freshwater (these freshwater beetles are desc... | <urn:uuid:126b6e3d-1549-4a66-8839-c981e3be7e07> | 3.609375 | 207 | Knowledge Article | Science & Tech. | 53.732586 |
Wildlife includes those wild animals that are not domesticated and are not in captivity. At one time, the term referred only to those birds and mammals considered to be game animals. These animals were hunted for sport, such as the white-tailed deer, gray squirrel, cottontail rabbit, wild turkey, ruffed grouse, bobwhit... | <urn:uuid:9f898c68-ea1a-4e64-964d-dc841ebd5338> | 3.75 | 2,027 | Knowledge Article | Science & Tech. | 30.881321 |
The result of division is to separate a group of objects into several equal smaller
groups. The starting group is called the dividend. The number of groups that are
separated out is called the divisor. The number of objects in each smaller group is
called the quotient.
The results of division can be obtained by repeate... | <urn:uuid:3d06d102-0551-41ed-b327-b4011d98f2af> | 4.6875 | 132 | Knowledge Article | Science & Tech. | 69.517476 |
For the first time scientists have demonstrated the impact of climate change on ocean warming and sea surface temperatures affecting global fisheries stocks. Previous studies were limited to individual fisheries. The changes have been occurring clearly since the 1970s, the scientists say. The implications of this resea... | <urn:uuid:0a0d7411-ebc6-4da0-ad6e-9ad855f297b8> | 3.4375 | 276 | Knowledge Article | Science & Tech. | 21.361486 |
Attention Grist and Wikipedia readers:
Please see this comment on the linking of this post from those websites (update Jan 2 2008).
We had a cool talk on Friday about carbon sequestration in mine tailings.
First, the background:
For the past couple billion years, the primary planetary thermostat is generally thought to... | <urn:uuid:cb6227d5-084f-4235-947b-e0594bb1b3ff> | 2.9375 | 751 | Personal Blog | Science & Tech. | 39.660812 |
A University of Delaware PhD student has a machine that cold jump-start the hydrogen economy. ->
In Die Another Day, James Bond drove a car that used tiny screens and cameras to make itself invisible. This week, Mercedes did the same thing, but for real, driving its new B-Class F-Cell prototype around Germany with only... | <urn:uuid:7a9bcd3d-bf88-40bf-877d-51937208e407> | 2.890625 | 245 | Content Listing | Science & Tech. | 54.567708 |
Chemical Equilibrium Practice Problems
1. For the rusting of iron initially at equilibrium, predict the shift in the reaction with each perturbation.
3 Fe(s) + 4 H2O (g) <---> Fe3O4 (s) + 4 H2 (g) + heat
a) Increase the amount of water
b) Decrease the volume by half
c) Remove Fe3O4 as it is formed
d) Add hydrogen to th... | <urn:uuid:c0d9c763-8659-4e53-b2b9-5813c37716db> | 3.84375 | 231 | Tutorial | Science & Tech. | 69.203746 |
Hunting Bears with a Microscope
Olathe East High School
E-mail: click here
In this study, students will use lichens and tardigrades (water bears) to investigate their use as bioindicators of key air pollutants. When lichens are exposed to some kinds of air pollutants, especially to sulfur dioxide (SO2), the lichens are... | <urn:uuid:a3b41af2-773d-4432-87de-4450ed7ed45a> | 3.765625 | 3,275 | Academic Writing | Science & Tech. | 38.404015 |
Science Fair Project Encyclopedia
The Soviet reusable spacecraft program Buran ("Бура́н" meaning "snowstorm" or "blizzard" in Russian) began in 1976 at TsAGI as a response to the United States Space Shuttle program. Soviet politicians were convinced that the Space Shuttle could be used for military purposes, hence posi... | <urn:uuid:dfef03bd-b2ca-4e09-bd35-6245eeee48c9> | 3.9375 | 2,001 | Knowledge Article | Science & Tech. | 45.410754 |
let x = mass of gold. let y = mass of quartz
x + y = 100 the sum of the masses is 100g
(x / 19.3) + (y / 2.65) = (100 / 6.4) This says the sum of the volumes equals the total volume.
Use your favorite 2 equation, 2 unknown method to solve for x and y. You could say x = 100 -y and substitute this into the second equatio... | <urn:uuid:c9042f66-f820-490f-b065-a60d8c8b7d6b> | 2.9375 | 117 | Q&A Forum | Science & Tech. | 114.01893 |
The fruiting bodies of fungi are known as mushrooms, and are used for culinary purposes or intoxication depending on variety, although many contain deadly toxins. The scientific study of fungi is known as mycology.
In the biblical creation worldview, fungi were created by God during the Creation Week approximately 6,00... | <urn:uuid:1a82bd7f-4aca-4b67-b901-a2474159da4b> | 3.515625 | 136 | Knowledge Article | Science & Tech. | 32.953 |
Grasslands of Virachey National Park, Cambodia.
Not much is know about the biodiversity of Southeast Asia. In Cambodia, years of conflict have prevented scientists from gathering data regularly and limited conservation efforts. Fortunately, in October 2007 our scientists were able to conduct a biological survey of Vira... | <urn:uuid:4ee42b6f-6cb6-4ede-afc7-1ba1e3a70edf> | 3.40625 | 594 | Knowledge Article | Science & Tech. | 36.969187 |
- Special Sections
- Public Notices
LOS ANGELES (AP) — Scientists are abuzz about a coal-colored rock from Mars that landed in the Sahara desert: A yearlong analysis revealed it’s quite different from other Martian meteorites.
Not only is it older than most, it also contains more water. The baseball-size meteorite, est... | <urn:uuid:c81eb5c6-a64d-4dd5-b118-0b175c469035> | 3.375 | 318 | Truncated | Science & Tech. | 41.772557 |
Look up monthly U.S., Statewide, Divisional, and Regional Temperature, Precipitation, Degree Days, and Palmer (Drought) rankings for 1-12, 18, 24, 36, 48, 60-month, and Year-to-Date time periods. Data and statistics are as of January 1895.
Please note, Degree Days are not available for Agricultural Belts
Arizona Temper... | <urn:uuid:d37e71cf-c573-42e4-a5aa-726dae862137> | 2.703125 | 133 | Structured Data | Science & Tech. | 48.859886 |
The first truly Earth-like alien planet is likely to be spotted next year, an epic discovery that would cause humanity to reassess its place in the universe.
While astronomers have found a number of exoplanets over the last few years that share one or two key traits with our own world — such as size or inferred surface... | <urn:uuid:98eb823b-1001-4dd0-b1b8-96b1c171f681> | 3.421875 | 438 | Comment Section | Science & Tech. | 38.717908 |
DAMS on the River Rhône in Switzerland are threatening to turn the crystal waters of Lake Geneva into a deoxygenated, weed-covered dead zone, say researchers at the University of Geneva.
Over the past forty years, engineers have built nine large hydroelectric dams on the tributaries of the Upper Rhône, the main source ... | <urn:uuid:65deebe8-5139-4b87-928a-fd4d3284352d> | 3.25 | 217 | Truncated | Science & Tech. | 40.343279 |
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Warmer Seas May Rob Rainforests And Corals Of Clouds
Fri Feb 19 22:31:13 GMT 2010 by W G Treharne
The acidification of the oceans shows that we cannot tolerate a higher level than 390 parts per million of CO2.The tipping point may be lower than this, thus we need research to establish th... | <urn:uuid:38821050-a8df-432d-9ed1-f430c2e891da> | 2.78125 | 113 | Comment Section | Science & Tech. | 70.32397 |
Electrophoresis is a process for separating charged molecules based on their movement through a medium under the influence of an applied electric field. This module will introduce some of the early adaptations of electrophoresis in human identification laboratories. The next module deals with the technology used today.... | <urn:uuid:cdabe21e-fa8a-42aa-b6e6-62845a98df58> | 3.796875 | 267 | Tutorial | Science & Tech. | 22.051994 |
Junk DNA—or, as scientists call it nowadays, noncoding DNA—remains a mystery: No one knows how much of it is essential for life. As one scientist mused, “Is the genome a trash novel, from which you can remove a hundred pages and it doesn’t matter, or is it more like a Hemingway, where if you remove a page, the story li... | <urn:uuid:db44dfe0-f179-4b85-a554-f1e7330e5c83> | 3.8125 | 332 | Truncated | Science & Tech. | 40.325629 |
3JH,H calculationThe magnitude of three-bond 1H-1H coupling constants is determined mainly by the torsion angle between the protons but substituents, especially electronegative ones, do also affect the coupling. They influence the coupling in two ways; they cause a change in overall magnitude of the Karplus equation, a... | <urn:uuid:269e6c31-7845-4b19-a6fd-dcd1ccb930e0> | 2.71875 | 362 | Tutorial | Science & Tech. | 51.41611 |
Birds are the only animal form found in any climatic condition, anywhere in the world. They have no geographic barriers.
Colombo, 50 years ago used to have large populations of crows, feral pigeons and house sparrows. The house sparrow and the pigeon population declined with the closure of the granaries in the city. Bu... | <urn:uuid:f123a520-ef76-458a-b29c-fa8940abac02> | 3.21875 | 899 | Nonfiction Writing | Science & Tech. | 46.521602 |
The Marsh Fritillary Euphydryas aurinia is one of the fastest declining species in England, recorded as losing 66% of its colonies in England between 1990 and 2000..
The Marsh Fritillary breeds in open grassy habitats, especially damp grassland dominated by tussock-forming grasses; calcareous grassland (usually on west... | <urn:uuid:bd504e33-3387-457f-8918-66913dd79947> | 3.515625 | 795 | Knowledge Article | Science & Tech. | 20.746052 |
indirection definition programming
Manipulating data via its address. Indirection is a powerful and general programming technique. It can be used for example to process data stored in a sequence of consecutive memory locations by maintaining a pointer
to the current item and incrementing it to point to the next item.
I... | <urn:uuid:4638bc37-f1bc-47bc-b376-722b94791a34> | 3.515625 | 160 | Structured Data | Software Dev. | 26.345313 |
I have created a list class, that allows the user to create or edit a text file with a list of information inside the .txt file. When I read into the alphabet.txt (a .txt with a list of all the letters), it prints out the letter "z" twice. The editing that the user does is shown between the two "z's." I'm attaching a p... | <urn:uuid:3fff0456-4c48-4060-986b-97a76eae9aa2> | 2.71875 | 617 | Comment Section | Software Dev. | 72.374791 |
Electricity is a basic feature of the matter that makes up everything in the universe.
Electrical force is responsible for holding together the atoms and molecules from which matter is composed. In this way, electricity determines the structure of every object that exists. Electricity is also associated with many biolo... | <urn:uuid:83399a4c-8b5e-473b-bc0a-000236166d70> | 3.796875 | 1,713 | Knowledge Article | Science & Tech. | 42.730956 |
- Ruby Modules are similar to classes in that they hold a collection of methods, constants, and other module and class definitions. Unlike classes, you cannot create objects based on modules; instead, you specify that you want the functionality of a particular module to be added to the functionality of a class, or of a... | <urn:uuid:d908edeb-1c6e-4dd5-888d-611480a1d07b> | 3.390625 | 537 | Documentation | Software Dev. | 42.721204 |
Green Computing -- From Fad to Fixture
Green technology, an expansive field that is rooted in finding the balance between nature and man-made processes, encompasses everything from how technological devices are built to how they are destroyed and consume energy in between.
In practical terms, it could mean purchasing e... | <urn:uuid:07f04fe3-f36d-41a4-89cf-ad58dcca8b07> | 3 | 417 | Truncated | Science & Tech. | 36.158615 |
Removes the first occurrence of the specified item from an Array object. This function is static and can be invoked without creating an instance of the object.
var isRemoved = Array.remove(array, item);
The array to remove item from.
The object to remove from the array at the first occurrence.
true if the specified ite... | <urn:uuid:1b38a16f-6e86-40ac-aceb-d21e3ad0577a> | 3.109375 | 229 | Documentation | Software Dev. | 52.968928 |
Wildlife of the Mongolian Steppe
Dr. Richard Reading from the Denver Zoo has created a model ecosystem management program through his interest of argali, the largest mountain sheep in the world. These sheep have been listed as a near threatened species, and reside in the highlands of central Asia. With the help of Eart... | <urn:uuid:670a0a7f-3c17-41bc-89a3-16958d75f1c7> | 3.3125 | 273 | Knowledge Article | Science & Tech. | 34.563305 |
Charles David Keeling's measurements provided the first significant evidence of increasing atmospheric carbon dioxide concentration in the atmosphere.
A snapshot of how 2012 stacks up against the five other warmest years ever recorded in the U.S.
If it seems like autumn leaves are taking longer to change color, youâ€... | <urn:uuid:917c1780-84b1-4a27-8bf4-613d8680fe09> | 3.390625 | 287 | Content Listing | Science & Tech. | 76.64699 |
The El Niño – Southern Oscillation (ENSO) is a recurring climate pattern involving changes in the temperature of waters in the central and eastern tropical Pacific Ocean. On periods ranging from about three to seven years, the surface waters across a large swath of the tropical Pacific Ocean warm or cool by anywhere fr... | <urn:uuid:17fa6db8-3793-43e0-9c8f-c39ae06ba5a3> | 4.34375 | 823 | Knowledge Article | Science & Tech. | 44.548385 |
An Overview of the Base Plot Function in R
The base graphics function to create a plot in R is simply called plot(). This powerful function has many options and arguments to control all kinds of things, such as the plot type, line colors, labels, and titles.
The plot() function is a generic function and R dispatches th... | <urn:uuid:dcee4b10-13af-4f3f-b8a4-482cb1bda4ad> | 4.3125 | 372 | Tutorial | Software Dev. | 67.294883 |
Watson constructing base pair models
During the process of trying to elucidate the structure of DNA, Jim Watson made some cardboard models to try to understand how DNA nucleotides are paired. It helped him visualize how hydrogen atoms of paired nucleotides interact with each other to form a symmetrical structure that f... | <urn:uuid:239f9db6-897d-40e3-be25-7adb7917655a> | 3.453125 | 144 | Truncated | Science & Tech. | 63.341257 |
Biologists from the University of the Ryukyus in Okinawa, Japan, have found two new species of encrusting anemones, in unexpected locations.
The species belong to the genus Neozoanthus, which was previously known only from a single species in the Indian Ocean. Surprisingly, the new species were found in the Pacific Oce... | <urn:uuid:f0978f8a-19ce-4476-8145-e96187a2dbbd> | 2.96875 | 472 | Knowledge Article | Science & Tech. | 40.968006 |
January 1, 2010
The main ingredient in clown makeup is being used to create a nano-material that could protect astronauts from solar radiation.
BOB HIRSHON (Host):
Can clown makeup protect astronauts? I’m Bob Hirshon and this is Science Update.
Boron nitride is used to make clown makeup. Now it’s being spun into micros... | <urn:uuid:8f42a65c-2f31-488c-9352-da2afbd722b2> | 2.96875 | 285 | Truncated | Science & Tech. | 60.380962 |
Click on the images for larger versions
Hector's Dolphin (Cephalorhynchus
Credit & Copyright: Dr. Bruce G.
Explanation: Here is one of the smallest and rarest of all cetaceans ... the Hector's dolphin of New Zealand.
Hector's dolphins grow to less than 1.4 m (4.8 feet) long, and are found only in the waters around New ... | <urn:uuid:a19fb963-317e-4c87-b05b-d54fe296c2c7> | 3.0625 | 309 | Knowledge Article | Science & Tech. | 53.583194 |
A very large solar flare erupted on the Sun yesterday and the Coronal Mass Ejection (CME) is speeding toward the Earth right now. It is expected to arrive early Saturday morning (4:30am MDT + / – 7 hours) and if you can get away from the city lights, even northern Colorado has a chance to see the heightened aurorae. He... | <urn:uuid:fa873ad3-547a-41b1-9781-50c947cea4cd> | 3.484375 | 1,149 | Knowledge Article | Science & Tech. | 40.11059 |
When the students have an understanding of the planet Mars
and some of the problems associated with sending people on extended duration
missions over large distances, they will be guided through discussions in which
they will plan their own mission. They are provided with both weight and monetary
constraints and guidel... | <urn:uuid:7294aaaa-538e-42ef-adcb-2431744ccb07> | 4.1875 | 273 | Tutorial | Science & Tech. | 43.783462 |
Meteorologists use radar
tornadoes might form
But, the radar can't detect actual tornadoes. People are needed to do that.
The National Weather Service can't rely on tornado reports from people off
the street. These people don't have any training so they may not actually
see what they think they see. Instead, the Weathe... | <urn:uuid:a265d360-71fe-498e-83b2-65a7cd947f71> | 3.4375 | 619 | Content Listing | Science & Tech. | 58.976073 |
This just released image shows an X-ray view from the orbiting Chandra X-ray observatory overlaid on a visible light image of galaxy cluster Abell 520 The optical part shows stars in our Milky Way and galaxies belonging to the cluster. The red glow is the x-rays from normal matter heated to millions of degrees in the c... | <urn:uuid:a9492052-b900-49fe-86a7-62f936603654> | 3.453125 | 202 | Personal Blog | Science & Tech. | 46.000556 |
800,000 years ago the sky over Asia was aflame with teardrops of molten earth, blasted heavenward by a gigantic meteorite impact. Members of Homo erectus, a precursor to modern humans, must have seen the firestorm and gone running for shelter.
What lit the terrified eyes of our distant ancestors were splatters of liqui... | <urn:uuid:d639dfa0-20e4-4876-98e7-073e0dcb78fc> | 4.03125 | 901 | Personal Blog | Science & Tech. | 39.110826 |
|Big Bang Nucleosynthesis|
Every object you've ever seen in your entire life - your TV, your books, your own body - is built up of three simple ingredients: protons, neutrons, and electrons. These three particles even make up the objects we see shining in the daytime and nighttime skies - the sun, the moon, the planets... | <urn:uuid:b0666a78-b6d9-4e3b-8fff-e0fab7761e65> | 3.765625 | 619 | Knowledge Article | Science & Tech. | 43.734857 |
Many species of fish are occasional vagrants to British
waters, especially some pelagic species that are brought to our
shores by oceanographic currents.
Luvarus imperialis is a tuna-like fish that is the only
member of its family (Luvaridae). It is an oceanic species that
feeds on gelatinous zooplankton and can grow t... | <urn:uuid:641e3f2c-e035-44cd-a1fb-37581ec34b8d> | 3.3125 | 364 | Knowledge Article | Science & Tech. | 40.706601 |
Chapter 12 - Thrusting Against the Quantum Vacuum
Notes by David A Roffman on Chapter 12 of
FRONTIERS IN PROPULSION SCIENCE
Chapter by G. Jordan Maclay (Proffesor Emeritus, University of Illinois),
Quantum Fields LLC, Richland Center, Wisconsin
Chapter 12 explores how quantum vacuum properties may be applied to propuls... | <urn:uuid:df0f2542-0935-4208-a249-8e6919b1e4ac> | 3.3125 | 2,093 | Academic Writing | Science & Tech. | 40.572253 |
Most bioluminescent ocean dwellers produce blue-green light, because its wavelengths travel farthest in the water. Because this applies to the sun's light too, marine life tends to have eyes that are only sensitive to a small range of blue-green light. Black Dragonfish, as well as the rest of the the Malacosteid family... | <urn:uuid:2e52e692-2882-445d-a388-5d318b8ab84c> | 3.78125 | 416 | Knowledge Article | Science & Tech. | 40.474358 |
Today was a relatively calm day as we continued to collect gravity, magnetic, and bathymetric data in the southwest corner of the region. For most of today we were traveling in a northwest direction and consequently were going with the current. This meant that we had pretty smooth sailing!
One of the computer screens w... | <urn:uuid:fe9b0c9b-177f-4b4b-9fc7-260d4fc55bec> | 2.84375 | 486 | Personal Blog | Science & Tech. | 54.278226 |
This data set is part of the WAISCORES project, an NSF-funded project to understand the influence of the West Antarctic ice sheet on climate and sea level change. WAISCORES researchers acquired and analyzed ice cores from the Siple Dome, in the Siple Coast region, West Antarctica. Taylor measured the electrical conduct... | <urn:uuid:4931ee06-9027-4c5e-9731-48e1a071b188> | 2.84375 | 197 | Structured Data | Science & Tech. | 50.343182 |
Assessing UV-B induced DNA damage in Antarctic plants: is desiccation a compounding factor?Entry ID: ASAC_1310
Abstract: Metadata record for data from ASAC Project 1310
See the link below for public details on this project.
---- Public Summary from Project ----
Increasing UV-radiation over Antarctica each spring may da... | <urn:uuid:d3cd3250-27d7-4b01-a766-b657b04f51c3> | 2.75 | 1,637 | Academic Writing | Science & Tech. | 58.994969 |