text stringlengths 174 655k | id stringlengths 47 47 | score float64 2.52 5.25 | tokens int64 39 148k | format stringclasses 24
values | topic stringclasses 2
values | fr_ease float64 -483.68 157 | __index__ int64 0 1.48M |
|---|---|---|---|---|---|---|---|
posted by Erin
A 395.0 g block is dropped onto a vertical spring with a spring constant k = 252.0 N/m. The block becomes attached to the spring, and the spring compresses 0.29 m before momentarily stopping. While the spring is being compressed, what work is done by the block's weight?
What work is done by the spring?
W... | <urn:uuid:dca4952e-b3d2-490c-89b7-67ed28cffb61> | 2.796875 | 162 | Q&A Forum | Science & Tech. | 125.096786 | 95,606,528 |
- To feed the world sustainably, repair the soil
New technologies and genetically modified crops are usually invoked as the key to feeding the world's growing population. But a widely overlooked opportunity lies in reversing the soil degradation that has already taken something like a third of global farmland out of pr... | <urn:uuid:d03dde16-d895-4a5f-bd3c-2289f77dffb4> | 3.65625 | 980 | Content Listing | Science & Tech. | 30.131414 | 95,606,544 |
A cone has an altitude of 40. The volume of that cone equals the volume of a sphere. If their radii are equal, how do I find that radius?© BrainMass Inc. brainmass.com July 20, 2018, 12:48 pm ad1c9bdddf
Please see the attached file for the complete solution.
Thanks for using BrainMass.
A cone has an altitude ...
The ra... | <urn:uuid:c7d4cc08-912e-4080-a51b-49782cfee80c> | 3.875 | 109 | Q&A Forum | Science & Tech. | 77.840682 | 95,606,548 |
The world typically sees about 90 tropical cyclones a year, but that number could increase dramatically in the next century due to global warming, a US scientist said Monday.
Rising greenhouse gas emissions could lead to a 10 to 40 percent increase in the frequency of tropical cyclones by the year 2100, said prominent ... | <urn:uuid:05180ee6-410f-4492-8057-92cd258da622> | 3.765625 | 336 | News Article | Science & Tech. | 31.148758 | 95,606,554 |
Using HTML in Android
Sometimes you may need to use html tags to format your text in android. This may be useful from the view of simplicity. Formatting with HTML is much simple than java. Therefore, if you know how to use HTML tags in android, the formatting will be much easier.
Step 1- A class named 'Html' is used fo... | <urn:uuid:480a7f13-dd9f-44c0-8116-0fc8df1a4602> | 3 | 159 | Tutorial | Software Dev. | 81.491639 | 95,606,561 |
London: Scientists are planning to fit radio receivers to over one thousand ants to observe their habits and ways of communication.
Researchers from the University of York in the UK will carry out this study on the National Trust`s Longshaw Estate, Derbyshire, a hotspot for the northern hairy wood ant, the `Daily Mail`... | <urn:uuid:d8cc4a11-eb75-48e1-bc92-cb342848dad4> | 3.421875 | 444 | News Article | Science & Tech. | 49.01753 | 95,606,562 |
Skip to Main Content
Relative effects of climate change and wildfires on stream temperatures: A simulation modeling approach in a Rocky Mountain watershedAuthor(s): Lisa Holsinger; Robert E. Keane; Daniel J. Isaak; Lisa Eby; Michael K. Young
Source: Climatic Change. 124: 191-206.
Publication Series: Scientific Journal ... | <urn:uuid:5ae501b8-b716-40dd-908e-fcb18fefc450> | 3 | 631 | Truncated | Science & Tech. | 22.835236 | 95,606,568 |
|Keep It Simple, Stupid|
Please, please, please, call it Net::CPAN. Then we can get CGI renamed Net::CGI.
Yuck. No. I wouldn't agree with either of those names. Both CGI's and CPAN's relationship to networking is peripheral.
CPAN uses various means to retrieve modules over the network but its real job is to determine d... | <urn:uuid:bede4197-0627-4c3e-8938-116ac1bb500d> | 2.578125 | 316 | Comment Section | Software Dev. | 57.481169 | 95,606,611 |
A small molecule inhibits jasmonic acid and helps to explain its effects
Researchers trying to get new information about the metabolism of plants can switch off individual genes and study the resulting changes. However, Erich Kombrink from the Max Planck Institute for Plant Breeding Research in Cologne and Markus Kaise... | <urn:uuid:bac0b16b-bde6-4757-9025-062dd29fdecd> | 3.109375 | 1,639 | Content Listing | Science & Tech. | 36.503146 | 95,606,619 |
摘要： 本文讲的是Automatic PHP Regular Expression Building Part 1: Introduction to the PHP Regex Advanced Pa...，Contents Introduction The Beginning Problem The Concept of Meta Regular Expression Matching The PHP Advanced Regex p
Some time ago I had the need to go farther than what PHP can offer regarding regular expressions. I... | <urn:uuid:6e398f13-205b-42d4-a67d-3377c5908357> | 2.8125 | 1,068 | Truncated | Software Dev. | 55.055017 | 95,606,645 |
Large Scale Structure of the Universe
by Alison L. Coil
Publisher: arXiv 2012
Number of pages: 43
Galaxies are not uniformly distributed in space. On large scales the Universe displays coherent structure, with galaxies residing in groups and clusters, which lie at the intersections of long filaments of galaxies. Vast r... | <urn:uuid:5abb1694-2ad9-45ff-99d4-22a3519cd507> | 2.609375 | 349 | Content Listing | Science & Tech. | 29.752555 | 95,606,646 |
Electron and atom group transfer from a solvated donor to a solvated acceptor molecule, or between a solvated molecule and a macroscopic solid body such as an electrode or a membrane, have attracted attention since the days of Grotthuss, Davy, and Faraday(1). Such processes are of crucial importance in chemical, biolog... | <urn:uuid:4047df69-9eb7-4895-ab6e-a29a1ef9c19d> | 2.84375 | 267 | Truncated | Science & Tech. | 4.994545 | 95,606,656 |
One of the key controllers of neural development seems to depend on a simple cellular decision--whether to divide perpendicularly or in parallel to the embryonic structure called the neuroepithelium. Nevertheless, such orientation is critical, and understanding its machinery could help neuroscientists learn to control ... | <urn:uuid:096c19fd-464c-46bb-83f6-7d58ea26eb21> | 3.515625 | 876 | Content Listing | Science & Tech. | 32.798007 | 95,606,659 |
Can continuous motion be an illusion?
- Publication Year:
- Usage 655
- Downloads 655
- PhilSci-Archive 655
- Repository URL:
- Most Recent Tweet View All Tweets
It is widely accepted that continuity is the most essential characteristic of motion; the motion of macroscopic objects is apparently continuous, and classica... | <urn:uuid:c7b628b5-4366-47a5-b761-179ae7c9566f> | 2.765625 | 341 | Academic Writing | Science & Tech. | 30.018333 | 95,606,671 |
A heatwave is shortly expected to hit the UK, bringing extremely warm weather and bright, clear skies.
Temperatures could rise up to 30°C by next week as the heatwave sweeps the UK, with high pressure bringing in hot Mediterranean air.
The Met Office expects this warm weather to continue over the next few weeks, but wh... | <urn:uuid:9cf186e5-14e3-40a9-819b-4cb54e25ff57> | 2.5625 | 414 | News Article | Science & Tech. | 64.314348 | 95,606,679 |
Remote Sensing of Wind Velocity from Satellite — Borne Lidar Systems
The development of stable, tunable, diffraction-limited lasers has made possible the remote measurement of atmospheric wind velocity using a pulsed coherent laser radar. The Wave Propagation Laboratory of the National Oceanic and Atmospheric Administr... | <urn:uuid:71610f06-2088-4922-b24d-779797b69e91> | 2.71875 | 579 | Truncated | Science & Tech. | 40.34216 | 95,606,689 |
Analytical techniques are powerful tools in a chemist's armoury. Spectroscopic data and chemical information are used routinely in laboratories to follow a chemical reaction or elucidate a chemical structure. However, the sophistication of the analytical techniques used changes rapidly, hence the routinely used method ... | <urn:uuid:a616ffb3-1aa2-44aa-888c-01272b7ee781> | 2.65625 | 282 | Product Page | Science & Tech. | 21.837879 | 95,606,696 |
Slope dude loves to ski. He teaches us by talking while he skis the course. We learn from him that uphill slopes are positive Downhill slopes are negative flat slopes are zero and vertical "slopes" are undefined...
Look at that Cartesian Plane
Isn't it just so beautiful?
X on the horizontal
Y up and down the vertical
N... | <urn:uuid:abc46ac9-910a-4f5c-9226-a0b651f5c1a9> | 3.40625 | 467 | Truncated | Science & Tech. | 73.06211 | 95,606,697 |
A new study shows foraging for pollen and nectar causes stress in bees.
Ralf Hirschberger/AAP Images
The work honey bees do is critical for our ecosystems, but it comes at a high personal cost.
A aerial view of Kinder Morgan’s Trans Mountain marine terminal, in Burnaby, B.C., is shown on Tues., May 29, 2018.
(Jonathan ... | <urn:uuid:eedb86e9-f1aa-4e20-bb38-a23cba7e9e9e> | 2.65625 | 950 | Content Listing | Science & Tech. | 40.023035 | 95,606,704 |
- Is there a way to harness electricity from lightning?
- How many wind turbines would it take to power all of New York City?
- Which engine is better at high altitude: diesel or gasoline?
- Why do the products of a nuclear fission reaction in uranium have three neutrons but not three protons?
- What is the energy of g... | <urn:uuid:3d4d2068-6d2f-4398-933c-0b48449ced77> | 3.4375 | 804 | Q&A Forum | Science & Tech. | 47.95016 | 95,606,706 |
Back in July, Microsoft launched the AI for Earth program that would focus on using artificial intelligence to advance sustainability around the world. Even better, this Monday, they announced that they'll be investing an additional $50 million over the next five years into the project. More specifically, the money wil... | <urn:uuid:686a6a39-807b-401b-8014-348f5833364c> | 2.65625 | 722 | News Article | Science & Tech. | 35.768312 | 95,606,711 |
i have to build a program to cacluate the weighted percent.when ever the code is compiled it is giving the output to be 0.
what is the use of single colon in c++.i do not know what is the use of single colon in c++ and how to use it and where to use it. may one ...
i have got this assigment , i have 80%.how to add obje... | <urn:uuid:d14d615b-f665-4ef8-b6eb-df40a27ecb67> | 2.75 | 154 | Q&A Forum | Software Dev. | 79.354139 | 95,606,719 |
OpenJDK is one of the most widely used open source implementations of the Java platform. It is used to change, customize, and tune core application internals and provide a way to extend the application internals according to your requirements.
OpenJDK Cookbook begins by introducing you to OpenJDK and IcedTea builds for... | <urn:uuid:85497bcd-2620-455f-80a4-41d61a042460> | 2.640625 | 460 | Content Listing | Software Dev. | 51.985471 | 95,606,740 |
Please help with the following questions.
Chapter 2: Biology and Society, Question 14, p.34-
? One solution to the problem of acid precipitation caused by emissions from power plants is to use nuclear power to produce electricity. The proponents of nuclear power contend that it is the only way that the United States ca... | <urn:uuid:69b1467a-eb40-4382-aeef-a909ec5979a5> | 3.03125 | 1,115 | Q&A Forum | Science & Tech. | 46.313153 | 95,606,756 |
While people in the eastern two-thirds of the U.S have been dealing with Arctic Air, the bulge in the Jet Stream over the eastern Pacific Ocean has been keeping the western third of the U.S. in warmer than normal temperatures over the last two months. Infrared data from NASA provided a look at those surface temperature... | <urn:uuid:c8021fc7-11ab-4448-bd27-daac5a5345d4> | 2.984375 | 1,109 | Content Listing | Science & Tech. | 46.807277 | 95,606,760 |
Dust Bowl 2012: Hottest July on Record in U.S.
The National Oceanic and Atmospheric Administration (NOAA) reports that last month was, on average, the hottest July on record for the contiguous United States, beating the previous record set in the dust bowl of 1936. The past 12 months have been the hottest ever recorded... | <urn:uuid:bbb72e47-b76b-4c93-949c-4e29be06953e> | 3 | 409 | News Article | Science & Tech. | 66.143831 | 95,606,777 |
Hydrozoa | Leptothecata
Environment / Climate / Range
Sessile; depth range 165 - 183 m (Ref. 116013). Subtropical
Western Atlantic: USA and Canada.
Length at first maturity / Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Benthic, found the in outer continental shelf (Ref. 116013). Colonial (Ref. 19). Reproduction ... | <urn:uuid:1d89e5c7-a749-408f-a203-461832155d41> | 2.59375 | 290 | Structured Data | Science & Tech. | 84.510095 | 95,606,784 |
+44 1803 865913
By: Hans-Peter Plag(Editor), Michael Pearlman(Editor)
376 pages, 66 colour illustrations, b/w illustrations
With the provision of accurate reference frames and observations of changes in Earth's shape, gravity field and rotation, modern geodesy takes a fundamental role for improved understanding of geod... | <urn:uuid:62804f1a-d6e2-44dc-bd13-430503846e5c> | 2.703125 | 360 | Product Page | Science & Tech. | 8.787358 | 95,606,796 |
In a rare move, a Houston Methodist researcher is sharing his recipe for a new, more affordable way to make nanoparticles. This will empower any laboratory in the world to easily create similar nanoparticles and could lead to a whole new way of delivering biotherapeutic drugs and do it more quickly.
“We’re the only lab... | <urn:uuid:4d1a96e1-2dcd-41a2-a696-f2e0bd498fcd> | 3.25 | 1,124 | Content Listing | Science & Tech. | 38.014216 | 95,606,803 |
Charged particles flow through, moving energy around, creating electric currents, and producing the aurora. Many of these particles stream in from the solar wind, starting out 93 million miles away on the surface of the sun. But some areas are dominated by particles of a more local source: Earth's atmosphere.
This arti... | <urn:uuid:db36ea13-194b-45e8-a008-b4a04dcba58f> | 3.46875 | 1,393 | Content Listing | Science & Tech. | 38.127543 | 95,606,809 |
|Appearance||colorless gas, exhibiting a red-orange glow when placed in an electric field|
|Standard atomic weight (Ar, standard)||602(2)4.002|
|Helium in the periodic table|
|Atomic number (Z)||2|
|Group||group 18 (noble gases)|
|Element category||noble gas|
Electrons per shell
|Phase at STP||gas|
|Melting point||0.95... | <urn:uuid:efe27415-8df9-4ed5-978a-5a74c8d6d141> | 2.59375 | 22,322 | Knowledge Article | Science & Tech. | 68.045772 | 95,606,839 |
The external organs of holometabolous insects are generated through two consecutive processes: the development of imaginal primordia and their subsequent transformation into the adult structures. During the latter process, many different phenomena at the cellular level (e.g. cell shape changes, cell migration, folding ... | <urn:uuid:67c0876b-93d2-4851-b429-ac9f5d31cb5c> | 2.78125 | 2,872 | Academic Writing | Science & Tech. | 16.303607 | 95,606,843 |
Graphyne is a theorized allotrope of carbon. Its structure is one-atom-thick planar sheets of sp and sp2-bonded carbon atoms arranged in crystal lattice. It can be seen as a lattice of benzene rings connected by acetylene bonds. Depending on the content of acetylene groups, graphyne can be considered a mixed hybridizat... | <urn:uuid:5dec7d09-9a77-4e83-bbe4-359af32b9cce> | 2.84375 | 1,765 | Knowledge Article | Science & Tech. | 55.773081 | 95,606,849 |
Now you really can go to Tatooine! International Astronomy Union to let the public name up to 30 exoplanets next year
- Paris-based IAU will let the public vote on names for planets next year
- This is the first time they will have allowed planets to be named this way
- Previously nomenclature for exoplanets had follow... | <urn:uuid:e5793b1f-f03e-4b5e-b183-c9116da5577f> | 2.53125 | 1,426 | News Article | Science & Tech. | 41.619807 | 95,606,860 |
Easiest Math Problems EversamuelMCL7
The Top Ten
We (my partner and I) think this question should be number one because in Preschool, what you learn is based off of the number 1. You start with 1+1 and advance to greater numbers from there. 1+1 is basically the building block of numbers, equations, and essentialy the u... | <urn:uuid:7bd1498e-2530-4b5d-b2dc-34236e2bb7d3> | 2.8125 | 2,031 | Comment Section | Science & Tech. | 88.370937 | 95,606,882 |
1. The _______ of a variable is its ________.
a. address; l-value
b. value; r-value
c. address; r-value
d. value; l-value
e. a and b
f. c and d
2. When a variable's type is determined through default conventions,
the type declaration is:
3. The goto statement is the basis for the:
a. break statement in a C switch struc... | <urn:uuid:15bbe03b-385f-4627-8932-9a01d7b3d5d7> | 4.0625 | 909 | Content Listing | Software Dev. | 66.256992 | 95,606,887 |
At the core of any programming language is the notion of functions, but we tend to take them for granted. Sure, there’s the obvious fact that functions allow code to be encapsulated into individual units, which can be reused rather than being duplicated all over the place. But Python takes this beyond just the notion o... | <urn:uuid:5292be0d-5024-403a-bcd9-44d59f1ce7a8> | 3.046875 | 121 | Truncated | Software Dev. | 35.947 | 95,606,889 |
Sendes vanligvis innen 7-15 dager
"Dark Matter, Neutrinos, and Our Solar System" is a unique enterprise that portrays the connection between cosmology, particle and nuclear physics, and atmospheric and terrestrial physics. Constituents of dark matter (classified as hot, warm and cold) are studied in detail with regard ... | <urn:uuid:cba3238e-ef88-4041-978b-b51fb29820f0> | 3.046875 | 216 | Product Page | Science & Tech. | 25.373333 | 95,606,897 |
An enormous crater near the northern plains of Mars once harboured an ancient lake that could have supported microbial life, Nasa scientists claim.
The freshwater lake stood for more than one hundred thousand years at the base of Gale Crater, a 150km-wide formation that was created when a meteor punched into the red pl... | <urn:uuid:51d5f36f-d520-4bd0-8251-d66ab376cd3b> | 4.15625 | 1,046 | News Article | Science & Tech. | 47.710755 | 95,606,928 |
Conventional neo-Darwinian theory views organisms as infinitely sensitive and responsive to their environments, and considers them able to readily change size or shape when they adapt to selective pressures. Yet since 1863 it has been well known that Pleistocene animals and plants do not show much morphological change ... | <urn:uuid:5545a5ab-db77-46c2-a33a-f94d68d64c26> | 3.578125 | 525 | Academic Writing | Science & Tech. | 27.531397 | 95,606,936 |
Last year, scientists with NASA's Dawn mission announced the detection of organic material -- carbon-based compounds that are necessary components for life -- exposed in patches on the surface of the dwarf planet Ceres. Now, a new analysis of the Dawn data by Brown University researchers suggests those patches may cont... | <urn:uuid:dff407ca-1bfb-4b3b-9d55-0cc2bc77839b> | 3.640625 | 1,795 | Content Listing | Science & Tech. | 35.971672 | 95,606,953 |
An estimated 1 billion people are living both without access to clean drinking water or electricity. The small photovoltaic (PV)-powered hybrid membrane system described here is designed to address the plight of some of these people. PV and membrane technologies are chosen due to suitability for operation in remote and... | <urn:uuid:436b0914-e460-4581-aff0-bb194d4abbcd> | 3.171875 | 361 | Academic Writing | Science & Tech. | 45.394894 | 95,606,984 |
Since the beginning of time, the ocean has been regarded as boundless and untouchable by human activity. Because of its colossal size and depth, attempts at understanding the ocean are laden with difficulties. However, it has now become apparent that the ocean, despite its immense magnitude, can drastically be changed ... | <urn:uuid:8867dfd1-a184-4779-922a-f2f1a3deeb54> | 3.828125 | 870 | Personal Blog | Science & Tech. | 30.660051 | 95,607,019 |
In 1915 the physicist Albert Einstein proposed his general theory of relativity to explain how gravity works. Since then, the theory has passed a series of high-precision tests within the solar system, but there had not been precise validation at large astronomical scales.
It has been known since 1929 that the universe... | <urn:uuid:5a8ee6b7-e338-4618-b35a-3e396edb1ad7> | 4.0625 | 644 | News Article | Science & Tech. | 18.876498 | 95,607,074 |
Faster carbon dioxide emissions will overwhelm capacity of land and ocean to absorb carbon
BERKELEY – One in a new generation of computer climate models that include the effects of Earth's carbon cycle indicates there are limits to the planet's ability to absorb increased emissions of carbon dioxide.
If current product... | <urn:uuid:d09fa78c-d834-4fcb-985c-14fe53a5c7ce> | 3.46875 | 1,852 | News Article | Science & Tech. | 38.336962 | 95,607,092 |
By P Gosselin on 24. November 2017
The Arctic is defying the alarmist melting predictions made by global warming activists and scientists. An Embarrassment!
First, Vencore Weather here writes that Greenland Summit Station “will experience high temperatures around -40°F which continues the very cold and well-below norma... | <urn:uuid:8aac49b8-de48-4c77-88ec-f27155be9d76> | 2.84375 | 669 | Personal Blog | Science & Tech. | 53.802369 | 95,607,104 |
Meadow is a circle with radius r = 34 m. How long must a rope to tie a goat to the pin on the perimeter of the meadow to allow goat eat half of meadow?
Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):
Showing 0 comments:
Be the first to comment!
To solve this example are needed ... | <urn:uuid:e982bdb3-94bb-4670-93ba-5a6bab2a4b3a> | 3.46875 | 617 | Tutorial | Science & Tech. | 71.979736 | 95,607,107 |
How do people subjected to the endless dark days of winter in the far northern latitudes maintain normal daily rhythms? Though many might feel like hibernating, a highly regulated internal system keeps such impractical yearnings in check. From fruit flies to humans, nearly every living organism depends on an internal c... | <urn:uuid:40754719-80e1-4cfa-8093-ea990e1f32c1> | 3.453125 | 907 | Content Listing | Science & Tech. | 36.821753 | 95,607,132 |
This study presents the new aerosol assimilation system, developed at the European Centre for Medium-Range Weather Forecasts, for the Global and regional Earth-system Monitoring using Satellite and in-situ data (GEMS) project. The aerosol modeling and analysis system is fully integrated in the operational four-dimensio... | <urn:uuid:67d26cae-a75d-4e79-a401-2053c96b5878> | 2.6875 | 254 | Academic Writing | Science & Tech. | 8.393571 | 95,607,133 |
Non renewable resources take a long time to develop. Some examples are oil, coal, and natural gases. Renewable resources develop naturally and do not take long to do so. Some examples of these resources are wind, water, and solar power.
I think on nonrenewable resources you were talking 'bout fossil fuels.
Nonrenewable... | <urn:uuid:3258f6ff-cdde-48db-805a-ebc6415b3200> | 3.296875 | 925 | Personal Blog | Science & Tech. | 39.595403 | 95,607,149 |
Researchers from the Chinese Academy of Sciences and the Collaborative Innovation Center of Quantum Matter (Beijing), looked at the interactions of water molecules with various graphene-covered surfaces and found that graphene coatings may offer the ability to control the water evaporation process from various surfaces... | <urn:uuid:638bfa9b-c0d2-4daf-9dfd-a7909a016708> | 3.21875 | 177 | News (Org.) | Science & Tech. | -0.185572 | 95,607,161 |
LOS ANGELES — A provocative new study of photographs taken from orbit suggests that water flowed on the surface of Mars as recently as several years ago, raising the possibility that the Red Planet could harbor an environment favorable to life.
The crisp images taken by the Mars Global Surveyor do not directly show wat... | <urn:uuid:26689f59-d095-4473-bd12-92653a05bced> | 3.765625 | 649 | Truncated | Science & Tech. | 36.007693 | 95,607,164 |
The European Union will spend about 700 million euros ($900 million) to build the world’s most powerful lasers, technology that could destroy nuclear waste and provide new cancer treatments.
The Extreme Light Infrastructure project has obtained funding for two lasers to be built in the Czech Republic and Romania, Shiri... | <urn:uuid:8d4cdf9b-4a7d-420d-9be3-3270423bc14d> | 2.734375 | 1,822 | Comment Section | Science & Tech. | 55.190744 | 95,607,183 |
The research team – led by Durham University - including BirdLife International and the RSPB (BirdLife in the UK) looked at the effects of climate change on 815 bird species of conservation concern in sub-Saharan Africa and on the network of sites designated for them (termed Important Bird Areas).
Published in the jour... | <urn:uuid:95273898-1735-43dc-a51a-2b02dfa62e41> | 3.65625 | 1,659 | Content Listing | Science & Tech. | 38.102451 | 95,607,198 |
Oligosaccharides are constructed from carbohydrate monomer units which contain multiple hydroxyl groups, along with amino and carboxyl groups. Protecting groups play a vital role in oligosaccharide synthesis as they help in differentiating not only the same type of functional groups but also the different functional gr... | <urn:uuid:33c2726d-9f3b-4aa4-b8c2-b3c033f4eb76> | 3.34375 | 1,450 | Knowledge Article | Science & Tech. | 12.681808 | 95,607,200 |
The Surprising Reason Why Neutron Stars Don’t All Collapse To Form Black Holes
“The measurements of the enormous pressure inside the proton, as well as the distribution of that pressure, show us what’s responsible for preventing the collapse of neutron stars. It’s the internal pressure inside each proton and neutron, a... | <urn:uuid:60a580b9-3685-4b38-9ed4-fc2caeb32d18> | 3.625 | 3,771 | Content Listing | Science & Tech. | 47.445327 | 95,607,210 |
An oil drum is cut in half. One half is used as a water trough. Use the dimensions; length 82cm, width 56cm to estimate the capacity of the water trough in liters.
Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):
Showing 0 comments:
Be the first to comment!
To solve this example... | <urn:uuid:2b7de927-0033-4f6b-ac11-e56716e93ff6> | 3.40625 | 814 | Tutorial | Science & Tech. | 89.80415 | 95,607,211 |
posted by SOS
26.Use Russell-Saunders LS coupling to derive the ground state levels of (a) Ne
(b) F (c) Sc (d) Zr (e) C.
a. Construct a Grotrian diagram for the He emission spectrum (shown on
the right) and use it to assign as much of this spectrum as you can
using the data in the table below.
b. What is the energy dif... | <urn:uuid:289d0450-6fbb-4882-be9c-88ea0385d930> | 2.546875 | 389 | Q&A Forum | Science & Tech. | 110.802053 | 95,607,212 |
Teardrop-shaped mesoscale landscape features in plan view, having a tapered downstream tail.
Streamlined forms are often semi-lemniscate in plan view and may be composed of layers (Burr 2005) and so can have terrace-like benches along their margins. Some islands may be rhomboid or diamond-like shaped.
None but see also... | <urn:uuid:b907c9d5-4d68-4096-9fc3-d8d7de72172b> | 2.75 | 422 | Academic Writing | Science & Tech. | 53.591485 | 95,607,227 |
In order to avoid possible fraud in labelling, a number of different technologies have been developed in recent years to comply with the regulations of the European Union (Regulation CE No 104/2000) indicating the need to label fisheries products with their scientific name so as to ensure traceability throughout the ch... | <urn:uuid:6dc0035e-e775-42d5-8090-b67c2661b6aa> | 2.90625 | 853 | Content Listing | Science & Tech. | 35.252963 | 95,607,228 |
Tangled and drowned: a global review of penguin bycatch in fisheries
Crawford, R., Ellenberg, U., Frere, E., Hagen, C., Baird, K., Brewin, P., Crofts, S., Galss, J., Mattern, T., Pompert, J., Ross, K., Kemper, J., Ludynia, K., Asherley, R., Steinfurth, A., Suazo, C., Yorio, P., Tamini, L., Mangel, J., Bugoni, L., Jimén... | <urn:uuid:aec722f3-0c4d-41b1-b582-7d49d2f245d0> | 2.734375 | 4,102 | Content Listing | Science & Tech. | 28.003502 | 95,607,265 |
Sockets in Java
A “socket” is an end point in a communication link between separate processes. In Java, sockets are objects which provide a way of exchanging information between two processes in a straightforward and platform-independent manner (see the classes in the java.net package). In fact, sockets in Java are ver... | <urn:uuid:f94f8c95-c732-4255-b09b-79e2577a2458> | 3.453125 | 126 | Truncated | Software Dev. | 49.888602 | 95,607,270 |
We have already introduced pointers as one of the scalar data types. In this chapter, we examine pointers more closely and introduce an aggregate type called an array. Arrays and pointers are closely related in C. Together, they represent some of the most powerful features of the C language and probably account, as muc... | <urn:uuid:a2a5e91a-f726-4f32-b467-090ee08c6726> | 2.9375 | 99 | Truncated | Software Dev. | 27.905271 | 95,607,273 |
Application of Personal Computers to Lagrangian Modeling in Complex Terrain
Personal computers are now capable of solving complex problems related to the transport and diffusion of materials released into the atmosphere. Making such calculations rapidly and “on the spot” would be of great use in planning evacuations an... | <urn:uuid:0ee279fb-21a8-4e87-83e0-79b72d6328a8> | 2.875 | 305 | Truncated | Science & Tech. | 26.9561 | 95,607,274 |
New Study Sheds Light on How Cells Transport Materials Along Crowded Intercellular 'Highways'
News Feb 06, 2013
The interior of an animal cell is like a small city, with factories—called organelles—dedicated to manufacturing, energy production, waste processing, and other life functions. A network of intercellular "hig... | <urn:uuid:4386544c-91ac-4a2b-a862-5ebf3b34db4e> | 3.59375 | 1,032 | News Article | Science & Tech. | 20.947553 | 95,607,280 |
Plate tectonic theory teaches that the Earth is divided into layers called crust, mantle and core, with continents and ocean basins made of different kinds of crust. The surface is made up of gigantic plates that move about very slowly; however, this movement does not stop at the bottom of the crust. Instead, it stops ... | <urn:uuid:5a1f7095-793f-4b62-9fac-72b937e8b2d3> | 4.4375 | 867 | Knowledge Article | Science & Tech. | 48.19886 | 95,607,292 |
Astronomers using the National Science Foundation’s Green Bank Telescope (GBT) -- among other telescopes -- have determined that our own Milky Way galaxy is part of a newly identified ginormous supercluster of galaxies, which they have dubbed “Laniakea,” which means “immense heaven” in Hawaiian.
This discovery clarifie... | <urn:uuid:1e83f820-b67b-4522-8db3-1dc241ef0a68> | 3.046875 | 1,677 | Content Listing | Science & Tech. | 29.977145 | 95,607,296 |
The Dutch Ministers of Economical Affairs and of Education, Culture and Science have announced the mission name of the next Soyuz flight to the International Space Station, which has Dutch ESA astronaut André Kuipers serving as flight engineer. This mission has been christened DELTA.
Flanked by Kuipers and ESAs Directo... | <urn:uuid:c4478122-be5c-4231-9bcd-be8745b1b853> | 2.75 | 826 | Content Listing | Science & Tech. | 39.039403 | 95,607,312 |
If fishing around the world continues at its present pace, more and more species will vanish, marine ecosystems will unravel and there will be "global collapse" of all species currently fished, possibly as soon as midcentury, fisheries experts and ecologists are predicting.
The scientists, who report their findings Fri... | <urn:uuid:a121de58-0c22-415a-9854-88826569a3ef> | 3.421875 | 645 | Truncated | Science & Tech. | 36.703348 | 95,607,330 |
Occurrence, Electronic Configuration, Atomic and Ionic Radii, Ionisation Enthalpy, Electron Gain Enthalpy, Electronegativity, Physical Properties and Chemical Properties (Oxidation states and trends in chemical reactivity and Anomalous behaviour of oxygen)
- P Block part 28 (Reaction with hydrogen and oxygen)
undefined... | <urn:uuid:e7d1bc95-e4cf-4abf-a97b-2a8c58d95708> | 3.390625 | 506 | Content Listing | Science & Tech. | 34.280852 | 95,607,332 |
ESA - Hubble Space Telescope logo.
28 May 2015
Large Hubble survey confirms link between mergers and supermassive black holes with relativistic jets
Image above: Artist’s illustration of galaxy with jets from a supermassive black hole
Galaxies with relativistic jets.
In the most extensive survey of its kind ever conduc... | <urn:uuid:d323b7fc-0b78-462e-b5d5-be643f2e429d> | 3.28125 | 1,431 | News (Org.) | Science & Tech. | 31.91303 | 95,607,337 |
In the course of its brilliant evolution through the twentieth century, space science brought spectacular results and led to fundamental scientific findings. In the early quest for higher altitude, cosmic rays were discovered by Viktor Hess during a balloon flight in 1912. Following the second World War, sounding rocke... | <urn:uuid:e2b44285-6194-4092-8d03-675861136ef9> | 3.984375 | 173 | Truncated | Science & Tech. | 37.014685 | 95,607,365 |
Leatherback Sea TurtleLatin name: Dermochelys Coriacea,
Conservsation status: vulnerable (population is decreasing)
The largest of all sea turtles, the Leatherback has been on Earth since the dinosaurs—100 million years. It can grow over six feet long, weigh up to one ton, and dive over 3,000 feet—deeper than any other... | <urn:uuid:fd988228-f9c8-4f87-84eb-3e36e36e6a3c> | 4.0625 | 585 | Knowledge Article | Science & Tech. | 39.385 | 95,607,379 |
Second law of thermodynamics
From AMS Glossary
second law of thermodynamics
An inequality that is fundamentally different from the first law because it specifies the direction in which a natural process will evolve rather than merely requiring that certain quantities are conserved.
As formulated by Planck, the second l... | <urn:uuid:6da65b65-2329-4ba7-b871-bdeaeb038d78> | 3.140625 | 271 | Structured Data | Science & Tech. | 42.008222 | 95,607,388 |
Although flow meters have been in use for years, up until recently were mostly mechanical devices. However, recent advances in electronic technology have given us the the Laser flowmeter
, (sometimes referred to as an Ultrasonic flow meter) which uses two laser beams to determine the velocity of small particles almost ... | <urn:uuid:23c5c59c-19ab-4be4-b579-98b50e2ae2df> | 3.046875 | 177 | Truncated | Science & Tech. | 21.390752 | 95,607,393 |
In an earlier chapter we looked at how different C# programs running in different processes could communicate via sockets. This approach is relatively straightforward to use and exploits the widely adopted sockets communication model. However, C# offers another way of enabling programs to communicate -.NET Remoting. In... | <urn:uuid:3c6335e5-e06c-46ee-9c1b-8fcb3b54c226> | 2.765625 | 156 | Truncated | Software Dev. | 23.789231 | 95,607,394 |
The discovery involves a chemical known as an acetyl group. An estimated 85 percent of human proteins have this chemical added to the amino acid at one end of the protein. The addition comes in a process known as N-terminal acetylation. N-terminal acetylation occurs shortly after proteins are assembled. Although it has... | <urn:uuid:d5d5156f-904e-43b7-90a5-2791d15cc18b> | 2.984375 | 1,657 | Content Listing | Science & Tech. | 39.644577 | 95,607,413 |
In 1972, NASA and the US Geological Survey (USGS) launched a new satellite program "aimed at gathering facts about the natural resources of the Earth."
By 2013, the programme was made up of eight satellites, collecting millions of images and documenting decades of global change.
With nearly 30 million Landsat scenes do... | <urn:uuid:0eb21706-d819-4032-9390-47347eb34ea6> | 3.859375 | 846 | Truncated | Science & Tech. | 41.781872 | 95,607,416 |
Gas Laws describe the behavior of gases through examining the relationships between their physical properties. Despite the wide differences in chemical properties of all gases, they more or less obey the gas laws. For example, although both H2 and O2 are very different gases, with molecular weights of 2 g/mol and 32 g/... | <urn:uuid:fc7ac6ff-0a82-4d83-9dea-c331e5f667e5> | 3.984375 | 287 | Knowledge Article | Science & Tech. | 46.33594 | 95,607,433 |
Published: Fri Jul 28 2017 12:00 AM
New Zealand tsunami scientists have now published two journal papers that give a rundown on the impacts of Kaikoura tsunami
The tsunami was the biggest local-source tsunami in New Zealand since 1947 (and by local-source we mean a tsunami created close to our shore rather than a dista... | <urn:uuid:16f78a48-7d9b-4fc8-9bbe-4d74316df1d4> | 3.890625 | 1,570 | News (Org.) | Science & Tech. | 48.858281 | 95,607,457 |
Mangroves protect coastlines, are the beacons of hope for marine diversity, and essentially combat climate change. Saving these mangroves and growing new forests are essential tasks that we must undertake to save our planet.
Watch the video here:[embedvideo id=”91RgE_fIE34″ website=”youtube”]
Scientific evidence claim ... | <urn:uuid:744b9d6c-eb94-41dc-b104-1fdcb6876ed1> | 3.15625 | 373 | Truncated | Science & Tech. | 25.073269 | 95,607,468 |
The mechanism of circadian oscillations in the period protein (PER) in Drosophila is investigated by means of a theoretical model. Taking into account recent experimental observations, the model for the circadian clock is based on multiple phosphorylation of PER and on the negative feedback exerted by PER on the transc... | <urn:uuid:ed176f6d-f89f-46a0-a084-79e674f25182> | 2.796875 | 219 | Academic Writing | Science & Tech. | 23.6825 | 95,607,487 |
Running Cars on Hydrogen Made from Starch
A new way to make hydrogen from corn or potatoes could make fuel-cell vehicles more practical.
Using a stew of enzymes culled from several organisms, researchers have developed a way to convert starch, available from numerous sources including corn and potatoes, into hydrogen g... | <urn:uuid:33ad84af-9f0c-47ad-abf4-fd0aed3a1c2c> | 3.421875 | 1,082 | Truncated | Science & Tech. | 35.486919 | 95,607,489 |
Several dating methods exist, depending on different criteria and techniques, and some very well known examples of disciplines using such techniques are, for example, history, archaeology, geology, paleontology, astronomy and even forensic science, since in the latter it is sometimes necessary to investigate the moment... | <urn:uuid:bf5a1f34-b20f-4998-90ce-3a46d9f16fc9> | 3.3125 | 440 | Spam / Ads | Science & Tech. | 27.783049 | 95,607,524 |
Add the sum of the squares of four numbers between 10 and 20 to the sum of the squares of three numbers less than 6 to make the square of another, larger, number.
Cherri, Saxon, Mel and Paul are friends. They are all different ages. Can you find out the age of each friend using the information?
This task, written for t... | <urn:uuid:1c83eef2-1ce7-481d-8c4e-abfe4f2762c1> | 3.875 | 1,520 | Content Listing | Science & Tech. | 76.835976 | 95,607,530 |
The Lorentz Transformation (or Lorentz Transform) is a series of equations describing the effect of relative motion of multiple objects on the position of objects at given times. According to the transformation (unlike the Galilean Transformation), it affects relative length (Length Contraction) and time as well as pos... | <urn:uuid:90d1b4a9-7bdd-487b-8b00-1415e03e08af> | 4.25 | 235 | Knowledge Article | Science & Tech. | 18.460833 | 95,607,535 |
BsGCLM, when aligned with the same protein of other deuterostomes
, showed identities ranging from 34.
Until now, the earliest deuterostomes
scientists have discovered were between 510 and 520 million years old, when they had already begun to diversify into vertebrates, sea squirts, echinoderms such as starfish and sea... | <urn:uuid:929183af-0d55-49a4-8ea4-56232f1e2b5a> | 3.40625 | 448 | Structured Data | Science & Tech. | 2.180781 | 95,607,567 |
posted by Mary
Two slabs with parallel faces are made from different types of glass. A ray of light travels through air and enters each slab at the same angle of incidence. Which slab has the greater index of refraction and why?
slab A is a light colored glass maybe transparent. The ray of light travel through the glas... | <urn:uuid:2c4af5a9-e3cd-4b00-9010-75d9ce2c1ff5> | 3.828125 | 228 | Q&A Forum | Science & Tech. | 80.705 | 95,607,595 |
posted by Lena
Two steel blocks are at rest on a frictionless horizontal surface. Block X has a mas of 3.0 kg ans is attacthed by means of a light taut string to block Y that has a mass of 12 kg. A force of 45 N (E) is applied to block x. Calculate the force block Y exerts on block x.
I don't have any idea of how to go... | <urn:uuid:d7382881-c635-42b5-850c-90e47dd6a95f> | 3.421875 | 221 | Q&A Forum | Science & Tech. | 90.431227 | 95,607,596 |
Fred Ciesla, assistant professor in geophysical sciences at UChicago, simulated the dynamics of the solar nebula, the cloud of gas and dust from which the sun and the planets formed. Although every dust particle within the nebula behaved differently, they all experienced the conditions needed for organics to form over ... | <urn:uuid:93de5799-5e84-4aa6-92f4-fce04a1330d6> | 4.09375 | 1,275 | Content Listing | Science & Tech. | 38.542756 | 95,607,603 |
The findings are part of a comprehensive report in this week's Science by members of the Daphnia Genomics Consortium, an international network of scientists led by the Center for Genomics and Bioinformatics (CGB) at Indiana University Bloomington and the U.S. Department of Energy's Joint Genome Institute. A bullet-poin... | <urn:uuid:628c7b76-0efe-417c-a139-e841f0bba05e> | 3.96875 | 2,666 | Content Listing | Science & Tech. | 30.323612 | 95,607,617 |
It is fascinating how quantum mechanical behaviour of particles at smallest scales can give rise to strange properties that can be observed in the classical world. One example is the Fractional Quantum Hall Effect (FQH) that was discovered about 30 years ago in semiconductor devices.
It is one of the most striking phen... | <urn:uuid:7061c62c-1cdd-419b-ad0f-4e85dea62074> | 3.328125 | 1,681 | Content Listing | Science & Tech. | 34.141076 | 95,607,618 |
The long-exposure image taken with NASA's Hubble Space Telescope is the deepest-ever picture taken of a cluster of galaxies, and also contains images of some of the intrinsically faintest and youngest galaxies ever detected.
NASA, ESA, J. Lotz, M. Mountain, A. Koekemoer, and the HFF Team (STScI)
FRONTIER FIELDS IMAGE O... | <urn:uuid:f8963aa3-4b93-41b3-8266-1a28deadd8a3> | 3.359375 | 1,835 | Content Listing | Science & Tech. | 39.992659 | 95,607,619 |
MEDIA RELEASE - ISSUED 14th JUNE 2000
Three-month Seasonal Climate Outlook Summary: Rainfall probabilities for July to September 2000
Little shift in seasonal rainfall odds
The National Climate Centre's outlook for total July to September rainfall shows the chances of above average totals are close to 50% in most areas... | <urn:uuid:71c49970-69c6-47f1-baee-7384ba9deffb> | 2.578125 | 1,313 | Knowledge Article | Science & Tech. | 44.680945 | 95,607,625 |
At first, the fossil was smuggled out of Mongolia, as many dinosaurs are. It found its way to Japan, then Britain, then France. In 2015, the private collector who finally bought it contacted the paleontologist Pascal Godefroit to get his opinion on the specimen.
Godefroit’s opinion was: This is one weird dinosaur.
The ... | <urn:uuid:401357ab-be04-4faf-b41b-ce6a9eeb7d20> | 2.8125 | 1,663 | News Article | Science & Tech. | 47.198636 | 95,607,635 |
Physicists in the College of Arts and Sciences have made several important discoveries regarding the basic structure of mesons—subatomic particles long thought to be composed of one quark and one antiquark and bound together by a strong interaction.
Recently, Professor Tomasz Skwarnicki and a team of researchers proved... | <urn:uuid:6a9e41ea-8336-4918-b2f2-22a349af5f2d> | 3.140625 | 1,425 | Content Listing | Science & Tech. | 39.637866 | 95,607,647 |
It may be the ideal citizen science project for a community where so many enjoy gazing at the sky.
A team at the University of Colorado Center for Environmental Technology is teaming with Boulder's National Center for Atmospheric Research and NASA on what's known as CitizenSkyView. It's all about getting to know the cl... | <urn:uuid:4d982a95-1c50-4831-98f0-6d19c4cc6c48> | 2.953125 | 1,349 | News Article | Science & Tech. | 38.634341 | 95,607,654 |
Why would humanity revive the long-extinct woolly mammoth? Atlantic senior editor Ross Andersen draws on the expertise of paleoecology professor Jacquelyn Gill and Arctic scientist Max Holmes in a panel about an unusual, extreme effort to fight climate change. getAbstract warmly recommends this innovative talk.
In this... | <urn:uuid:f8b984ce-30d9-4563-b226-95cb15a6f342> | 2.859375 | 203 | Truncated | Science & Tech. | 43.1235 | 95,607,681 |
[Yuki Nakamura] Successful plant reproduction requires a unique type of lipase found only in plant and bacteria
Plant reproduction is a key to propagate species and rich harvest of agricultural product. A research team led by Dr. Nakamura discovered in Arabidopsis thaliana that successful gametogenesis requires a pair ... | <urn:uuid:7af2d453-9cfd-46e2-91e5-4fc5035a77c1> | 2.828125 | 193 | Knowledge Article | Science & Tech. | 23.566331 | 95,607,687 |
Scientists have Discovered a New Giant Octopus
A new type of giant Pacific octopus was discovered by researchers at the University of Alaska, Earther said. It is believed to be the largest specimen of octopus. In 2012, scientists at the University of Alaska, and the US Geological Survey, discovered a bunch of Pacific O... | <urn:uuid:25e15325-3b76-46c0-9f97-69e46a95b9b7> | 3.546875 | 316 | Truncated | Science & Tech. | 21.673008 | 95,607,701 |