Engineering

MTBF = 1/failure rate R(t) = e (-t/MTBF) http://www.vicorpower.com/documents/quality/Rel_MTBF.pdf

The element calcium is a metal. It turns out that calcium (Ca) is in Group 2 of the periodic table, and all the elements in Group 1 and Group 2 are "true" metals.

1000 BRITISH THERMAL UNITS PER HOUR

define social constuction define social constuction

A condensing turbine operates by expanding steam generated from boiling water, which drives the turbine blades to produce mechanical energy. As the steam exits the turbine, it enters a condenser where it is cooled and converted back into water, allowing for the recycling of the water back into the boiler. This process creates a vacuum that enhances the turbine's efficiency by maximizing the pressure drop across the turbine. The overall system contributes to the efficient conversion of thermal energy into mechanical energy and is commonly used in power plants.

The difference is that the CMM is a way to communicate capabilities, and ISO is a way to communicate the process. They are not necessarily incompatible. The Capability Maturity Model is a very specific way of classifying an organization's software development methods. In a certain way, it tells how the quality of its software designs is likely to be repeated. ISO-9000 procedures describe a (possibly) definite developemtn process but gives no indication of the likely quality of the designs or whether multiple software efforts are likely to produce software of similar quality.

As of my last knowledge, Lonnie G. Johnson, the inventor of the Super Soaker water gun, is alive. Born on October 6, 1949, he is currently in his early 70s. However, please note that this information may have changed since my last update, and I recommend checking a reliable source for the most recent information on his status.

Moving or variable-temperature air above or inside the telescope which distorts the image.

column constraint is for a single column. table constraint is for an entire table.

The acoustic energy gets converted into electric energy

approximately 50mm internal diameter but you'll need to verify this with manufactures if you need it to be precise. For modelling purposes this will give you a rough idea.

1948 i believe

You can live on a mountain.

Of course, it costs a lot of money to haul the food, materials, and goods required for you to live well on top of the mountain. Depending on the mountain, it may be so high that you would require oxygen to breathe, and so cold that you need lots of heat to keep comfortable.

But it's do-able, if you're willing to spend the money.

Oaktag

Many products that we use every

day-including gasoline, styrofoam,

and plastic-are made from oil. The

oil used to make these products

often comes from beneath the

ground in the rainforests. Removing

the oil from the ground, or drilling

for oil, is harmful to the rainforest. In

fact, drilling for oil is one of the main

causes of rainforest destruction

worldwide.

Oil, or petroleum, comes from

the fossils of dinosaurs and

plants that lived on Earth millions

of years ago. Oil is used to make

fuels, called fossil fuels, such as

gasoline. Oil is also used to

make plastic bags, bottles,

and cups, styrofoam, and

synthetic fabrics like

polyester and nylon.

Large oil companies drill for

oil on millions of acres of

rainforest. The companies then

sell the oil in order to make

money. There is nothing wrong

with making money, but when

companies destroy the

rainforests to make money they

destroy not only the forest, but

also the lives of the animals

and people who live there.

Oil drilling harms the

rainforests because lots of

trees are cut down to make

room for oil roads, oil

pipelines, and oil machinery. In

some places, people then move in

along the roads and cut down even

more trees. When these trees are

destroyed, all the animals that lived

in those trees are homeless.

Without their forest homes, these

animal species face extinction,

which means they could disappear

forever like the dinosaurs.

Another problem is that when

companies drill for oil the oil is

often spilled onto the soil and

into rivers. Indigenous peoples-

people whose families have lived

in the rainforest for thousands of

years-often become sick from

the pollution. Sometimes indigenous

peoples are even pushed

off of their lands, or

displaced, by oil projects.

Oil also creates air

pollution after it's

turned into gasoline.

Burning fossil fuels like

gasoline (by driving cars

and flying airplanes, for

example) makes our air dirty

and unhealthy to breathe.

Many people get sick from

breathing in too much of this

smog or dirty air.

Burning oil and gasoline

also makes the planet get

warmer and creates

climate change. This

RAINFOREST ACTION NETWORK

221 Pine Street, Suite 500 • San Francisco, CA 94104 • Phone (415)398-4404 • Fax (415)398-2732

email: rainforest@ran.org • Web: www.ran.org

Student Fact Sheet 6

facts about oil

means that weather patterns around the

world start to change in dangerous ways.

Winters become colder, summers become

hotter, and storms become fiercer and more

frequent. These changes in climate are hard

on the forests. One third of the world's

forests are threatened by climate change.

Oil Is Not Necessary

Even though oil and oil products are

currently used to drive our cars, fly our

planes, operate our factories, and warm our

homes, we don't have to use oil for these

things. Instead, we can use renewable

sources of energy, like the sun and the wind.

Energy from the sun and the wind is called

renewable because it never runs out. Light

and heat from the sun can be used to make

solar power and windmills can be used to

capture the power of the wind. The sun and

the wind are great sources of energy

because they don't destroy the rainforests or

harm the planet.

We can also use things other than oil to

make plastic, such as corn. Corn can be

grown on farmland that has already been

cleared for other crops, so it does not hurt

the rainforests or the planet.

What Can We Do To Help?

Until our energy supply comes from

renewable energies like the sun and the

wind, many of us will need to use oil in our

daily lives. By reducing the amount of oil we

use, however, we can make a big difference

for the rain-forests. There are many ways

we can reduce the amount of oil we use.

First, instead of driving our cars, we can

walk, ride a bike, carpool, and take the bus,

train, or subway whenever possible.We can

also write to automobile companies and ask

them to make cars that run on alternative

fuels that do not come from oil.

Second, we can use energy from the

sun as much as possible.We can hang our

laundry outside to dry, warm up special bags

of water for fun solar showers, and ask our

parents to install solar heating panels.

Although solar panels may be expensive to

buy, over time they'll save a lot of money-

and they'll help save the rainforests!

Third, we can use less plastic by using

glass, ceramic, metal, and cloth instead.

Take a cloth bag with you to the market and

use it instead of a plastic grocery bag. Use a

glass or a ceramic mug to drink from instead

of plastic cups, and buy drinks in glass

bottles instead of plastic bottles. If you do

use plastic containers, make sure to reuse

them as much as possible before recycling

them.

The Forth thing you can do is write to

Ford Motor Company. Currently, Ford

vehicles account for approximately one

month of the United States' annual oil

consumption, an amount equal to the annual

oil consumption of Italy. A few years ago

Ford promised to make cars that use less

oil, but they have broken that promise.

Please write to Ford and ask them to make

cars that use cleaner technologies, like

hybrids and fuel cells.

Write to:

Mr.William Clay Ford, Jr.

Chairman and CEO, Ford

Motor Company

The American Road

Dearborn, MI 48120

revised 2/04

Student Fact Sheet 6

2

The same way, as you convert Appels to Carrots ...........

There is a formula: KVAr = KVA / KW or cos=KW/KVA > Yes, we are treating KW, KVA, & KVAr as the 3 sides in a 90 deg TRIANGLE !

KW= vertical katede

KVAr = horizontal katede

KVA = hypotenuse

A Hydraform wall is a wall that is built using the Hydraform building blocks. Hydraform blocks are interlocking building blocks that is produced using a Hydraform block machine. Hydraform block machines utilises compressed earth method in creating building blocks, soil and cement is mixed and then compressed using the machine to manufacture high quality stabilised building blocks. Blocks are intelocking and require up to 70% less mortar than conventional bricks or blocks.

The questioner.

In a normal (centrifugal) pump you'd have a motor turning a shaft, then the shaft going through into an enclosed space where the pump wheel/impeller/rotor would sit.

It's a simple enough design, but it relies on a good seal where the axle passes from the pump housing to the motor.

And creating that seal can be difficult. It needs to be tight enough not to leak while still allow the axle to turn freely. It should last for ages too. Tricky.

"Magnetic drive" for pumps refers to that instead of having a drive shaft going through the pump housing to the motor, what connects the pump to the motor is a powerful magnetic field. This field acts straight through the wall of the pump housing.

Basically there's one magnet stuck to the pump wheel/impeller/rotor and another to the spinning end of the motor. And just like you can "magically" move a magnetic object on top of a table by moving another magnet underneath the table, the pump wheel will spin with the motor, even though there's no material connection between them.

This lets you use a fully enclosed pump housing w/o any axle seals that can wear out and leak. Quite clever.

A square foot cannot hold water its 2 dimensional. What you see is what you get .

A one cubic foot container can hold 7.48 US gallons of liquid.

i too need this design

Fluid bed dryer works on a principle of fluidization of the materials.

In fluidization process, hot air or gas flow is introduced through the bed of solid particulates.

This hot air will move upwards through the spaces between the particles and remove the moisture.