1,163 search results

Can natural infrastructure help Brazil beat its water crisis?
Nature & Environment

Can natural infrastructure help Brazil beat its water crisis?

...de Janeiro, Brazil] The Ilha Grande, near Rio Serious water crises have plagued Brazil’s major cities in recent years.Severe pollution in Rio de Janeiro’s Guanabara Bay is jeopardizing sailing and other water sports at the upcoming Olympic Games. A historicdrought from 2013 to 2015 in São Paulo dramatically slowed farm and factory production, threatening the national...
Network security
Digital & Computing

Network security

...Table 2 Examples of commercial symmetric key systems ALGORITHM DESCRIPTION DES (Data Encryption Standard) A block cipher with a 56-bit key. Adopted in 1977 by the US National Security Agency (NSA) as the US Federal standard, it has been one of the most widely used encryption algorithms but, as computers have become more powerful, it is now considered to have become too...
Level 3: Advanced 25 hrs
Looking at, describing and identifying objects
History & The Arts

Looking at, describing and identifying objects

...table like Table 1 below. On the left, list each category of information; in the middle, note whethaller you think observation or prior knowledge (or both) is involved here; on the right, note the probable source of the information (if this applies). Table 1 Categories of information for the British Museum’s netsuke Category Observation or prior knowledge Probable...
Succeed with maths: part 2 Badge icon
Science, Maths & Technology

Succeed with maths: part 2

...tables, charts and graphs. It provides a solid foundation for you to continue with studies in any subject which requires some degree of mathematical knowledge...Following on from Succeed with maths: part 1, this free badged course will continue to develop your mathematical knowledge and skills using everyday examples. The course will guide you through measurement,...
Level 1: Introductory 24 hrs
Engineering: The challenge of temperature
Science, Maths & Technology

Engineering: The challenge of temperature

...table that connects temperature with thermal energy in eV particle−1 and kJ mole−1. Table 1 T/K AVERAGE ENERGY / EV PARTICLE−1 AVERAGE ENERGY / KJ MOLE−1 300 0.026 2.5 1000 1 300 Answer Table 2 T/K AVERAGE ENERGY /EV PARTICLE−1 AVERAGE ENERGY / KJ MOLE−1 300 0.026 2.5 1000 kT/e = 0.086 6.023 × 1023 × kT = 8.31 11600 1 6.023 × 1023 × kT = 96.4 36100 kT/e =...
How can mobile technology help underpin reproductive rights?
Health, Sports & Psychology

How can mobile technology help underpin reproductive rights?

...tables and graphs, making results more quickly available to stakeholders as compared to a paper-and-pencil survey,” Gichangi adds, noting that it takes two to four weeks to create the accessible results. Kigen Bartilol, head of Reproductive and Maternal Health Unit of Kenya’s Ministry of Health, says that his outfit is closely working with the PMA2020 and will...
Noble gases
Science, Maths & Technology

Noble gases

...table the atomic number and relative atomic mass increases. The gasses get denser. Helium - helium is lighter than air. Neon is just lighter. Argon and krypton - I've just got to unstick these from the anchorage... Argon and krypton are both heavier than air. And xeon, xeon is the heaviest of the lot, you've heard of a lead balloon, well this is it. The science The noble...
Video 5 mins
Past-Time Lover: Cleopatra
History & The Arts

Past-Time Lover: Cleopatra

...table as I do – if not more. What benefits might our alliance bring to me and my many children? Be warned, I abhor betrayal, and crossing me is a deadly mistake. If you think you could treat me like the Queen I am, and honour me until your dying day, I will gladly join forces with you, ‘til death do us part. Is Cleopatra to die for? Cast your vote! Illustrator: Neil...