Skip to main content

Home/ JJP Website Review/ Group items tagged efficient

Rss Feed Group items tagged

Filter: All | Bookmarks | Topics Simple Middle
haley haegner

Finding a Fuel Efficinent Luxury Car Is Not an Oxymoron - 0 views

www.luxurycars360.com/...y-Car-Is-Not-an-Oxymoron-1.htm

fuel efficient cars

shared by haley haegner on 01 Dec 08 - Cached
  • mprove the power of these luxury autos while they consume less gas.
  • fuel economy
  • uel efficient luxury autos,
  • ...4 more annotations...
  • uel efficient cars that last a long time
  • engineering technology is excellent
  • incredible mileage
  • without consuming vast amounts of fuel.
  • haley haegner on 01 Dec 08
     
    fuel efficient.
Krisly Philip

Ways to Prevent Global Warming - 0 views

www.buzzle.com/...to-prevent-global-warming.html

preventions ways to prevent global warming

shared by Krisly Philip on 02 Dec 08 - Cached
  • Reasons for Global Warming Global warming can be minimized to a great extent, if we eliminate the causes which are mostly human made. The responsibility of preventing global warming rests both on individual as well as the state. In individual level we can change our practices such as minimize the usage of fossil based fuel, reduce the electricity consumption by using energy efficient appliances. Vehicular pollution can be minimized by using the public transport system. The nucleus goal is to beget the global warming under control by restricting the carbon dioxide release and other heat ensnaring greenhouse gases into the environment. On an average nearly 10000 pounds of carbon dioxide is released per year in significant countries like Canada and US. This can be immediately curtailed by becoming energy efficient. Reducing the usage of oil, coal and gasoline are one of the effective ways of preventing global warming.
Sara Espinosa

Biggest Cities | Galleries | Allianz Knowledge - 0 views

knowledge.allianz.com/...biggest_cities.html

people

shared by Sara Espinosa on 03 Dec 08 - Cached
  • 1. Tokyo, Japan Metropolitan area: 34 million people City: 12.5 million people Tokyo is by far the largest urban region in the world. Despite its size and complexity, Tokyo has a very efficient public transportation, which accounts for almost 80 percent of all daily journeys in Tokyo.
  • 1. Tokyo, Japan Metropolitan area: 34 million people City: 12.5 million people Tokyo is by far the largest urban region in the world. Despite its size and complexity, Tokyo has a very efficient public transportation, which accounts for almost 80 percent of all daily journeys in Tokyo. Urban Detail: Tokyo Bay has been gradually filled up to create more space for housing and offices. Odaiba, an island entirely created out of waste material, became one of Tokyo’s most interesting tourist spots with futuristic architecture, shopping, and entertainment centers. (Photo: Miki Yokoyama)
  • Sara Espinosa on 03 Dec 08
     
    tokyo
Sara Espinosa

In Pictures: The 10 Biggest Cities Of 2025 - Forbes.com - 0 views

www.forbes.com/..._0319futurecities_slide_2.html

future

shared by Sara Espinosa on 03 Dec 08 - Cached
  • Tokyo, Japan Current Population: 35.2 million Projected 2025 Population: 36.4 million Annual Growth Rate 2007 to 2025: 0.11%
  • Tokyo is a major global financial center. Its rail system, the largest in the world, is clean and efficient.
  • Tokyo's water and electricity capacity is in fine shape for a growing population, experts say
  • ...2 more annotations...
  • but industrial and household waste removal is a growing concern. Per
  • capita tonnage has doubled in the past 20 years, and finding urban space to build more processing plants has been a challenge.
  • Sara Espinosa on 03 Dec 08
     
    future
Kate L

Grolier Multimedia Encyclopedia - 0 views

gme.grolier.com/...article

energy problems

shared by Kate L on 01 Dec 08 - Cached
  • basic laws of physics dictate that energy is conserved and can only be changed from one form to another or into matter.
  • Fuel, on the other hand, is the accumulation of matter and therefore represents a store of energy.
  • released in the form of heat when the fuel is burned in chemical or nuclear reactions
  • ...39 more annotations...
  • cannot be reversed to regenerate the original fuel mass
  • a fuel problem does exist
  • If the supply of fuel is finite, not only will there be no energy supply when the fuel is exhausted
    • Kate L
      Kate L on 03 Dec 08
       
      Finite means: a form of a verb that can occur as the head of a sentence. In Sam wants to leave, wants is finite, leave is non-finite.
  • all other processes that depend on it will cease
  • Several factors combine to make the problem an urgent one
  • World population
  • demand for energy will also increase
  • coal, oil (petroleum), natural gas, uranium, and fuel wood—is limited and insufficient to sustain rapid rates of development.
  • debate about the exact length of time available before the effects of a worldwide shortage become apparent
  • shortage will occur.
  • geothermal energy, hydroelectric power, peat, ocean thermal energy, solar energy, tidal energy, wind power, and fuel wood.
  • replenish themselves naturally in a relatively short time and will therefore always be available.
  • Renewable energy resources
  • indirectly responsible for many other renewable energy sources.
  • ocean currents and winds are results of the uneven distribution of solar radiation over the Earth's surface
  • winds in turn produce waves whose energy can be utilized
  • windmills and wind power
  • ocean thermal energy, solar heating of the upper layers of the ocean produces temperature gradients that can be harnessed to generate electricity
  • Sun also powers the hydrologic cycle, in which ocean water is evaporated, transported over the continents, and precipitated as rain or snow to form rivers
  • flow energy produces hydroelectric power.
  • energy locked in such renewable fuel sources as wood and peat is derived from the Sun by the process of photosynthesis.
  • renewable energy source is geothermal energy
  • arises through the leakage of heat from the Earth's interior to the surface
  • over the entire surface of the Earth at a very low average rate, leakage is much higher in certain locations.
  • Yellowstone National Park
  • Iceland, Italy, and New Zealand.
  • possible to tap the heat and use it for human purposes.
  • Nonrenewable resources originate from two processes: (1) photosynthesis, which occurred many millions of years ago, followed by the fossilization of the plant and animal life that resulted, and (2) the formation of the Earth itself.
  • fossil fuels—coal, oil (petroleum), and natural gas;
  • produced the fuels for nuclear energy, such as uranium for fission and lighter elements for fusion
  • irreplaceable fuels represent an energy capital that must be invested wisely.
  • A cleaner-burning fuel than oil, natural gas seemed to be in abundant supply at the turn of the 21st century and, with the greatly enlarged network of gas pipelines, was rapidly growing in use.
  • nearly total dependence on fossil fuels and hydroelectricity ensures that efforts to solve energy problems by switching to alternative sources will have to overcome a great deal of inertia, both economic and psychological.
  • sources as solar power, wind power, and synthetic fuels suffer from the serious drawback that few major installations now exist.
  • handicapped by the engineering problems of converting the energy to a form useful to human beings.
  • solar energy reaches the top of the atmosphere in amounts 10,000 times greater than all human production of energy, it reaches the Earth's surface at rates of only about 80 to 250 W/m2, and considerably less on cloudy days.
  • arge-scale system based on solar-collector panels will be physically huge, causing problems of maintenance and land use
  • Wind power, wave power, and ocean-thermal-generation sources suffer from similar difficulties
    • Kate L
      Kate L on 03 Dec 08
       
      Even though there are some difficulties with working towards the alternative fuels, it may prove to be more efficient for smaller things (heat and power to small communities or single buildings) in the long run
  • Kate L on 01 Dec 08
     
    Energy Problem
Kate L

Alternative Fuel Sources - Cheaper And Eco-Friendly - 0 views

ezinearticles.com/?Alternative-Fuel-Sources---Cheaper-And-Eco-Friendly&id=1034941

energy alternative eco-friendly

shared by Kate L on 01 Dec 08 - Cached
  • The conventional and traditional fuel sources are becoming more and more expensive to extract and their indiscriminate use in the past century has resulted in their depletion.
  • natural fuel sources will reach critically low levels and precipitate a crisis much earlier than we think.
  • promising discoveries
  • ...13 more annotations...
  • mankind would have perfected and commercialized alternate sources of fuel that will be eco- friendly and affordable too.
  • Bio-diesel is one such alternate fuel source that is extracted from plants.
  • E 85, bio-diesel
  • Its contents of 15% gasoline and 85% ethanol mean that it is at least better than using pure gasoline.
  • uch alternate fuel sources like E 85 score above gasoline, they still pollute and require a vast amount of corn to be grown
  • translates into availability of lesser land for growing food for people.
  • electric cars seem to be the best alternate fuel source that we have
  • conserve our natural fuel sources.
  • efficient because all of the electricity that they need can be generated at one central location.
  • much better option than consuming petroleum derivatives and polluting more by using small and inefficient combustion motors.
  • Electricity
  • produced in any manner that suits the needs on a particular location depending on the resources it has
  • coal, hydro-electric or wind to produce this electricity that is required for electric cars.
  • Kate L on 01 Dec 08
     
    alternative fuel sources
robert meeker

The History Of Army Skydiving « Sky Diving Weblog - 0 views

manskydiving.wordpress.com/...the-history-of-army-skydiving

skydiving

shared by robert meeker on 04 Dec 08 - Cached
    • robert meeker
      robert meeker on 04 Dec 08
       
      oka site
    • robert meeker
      robert meeker on 04 Dec 08
       
      high light at botim of page
  • Today we enjoy skydiving as a breathtaking leisure sport, but its origins lie within the army.  The history books are chock full of dates and occurrences where skydiving has played an important part.
  • Army skydiving had a big role to play in the Second World War, when paratroopers dropped into enemy zones to fight
  • ...3 more annotations...
  • Skydiving is a natural sport to develop from army training.
  • many expert skydivers found their passion after joining the army.
  • So it seems army skydiving has gone from being a skill developed to get into enemy territory quickly and efficiently, to a spectator sport appreciated by the masses.
1 - 7 of 7
Showing 20▼ items per page