What Do You Mean By Four Stroke?
What is a 4-stroke diesel engine?As the name suggests, these engines work on reciprocating actions of pistons. One stroke means one linear motion of the piston in one direction. When the piston moves in the opposite direction, that is counted as another stroke.For a 4-stroke engine, the piston has to move up, then down, then up again, and then down again to complete one cycle of the engine. In that 4 stroke of the piston, the crankshaft will have turned 2 revolutions.The 4 strokes of the piston is to complete 4 stages of the combustion cycle. As you might have known, in order for a fire (or explosion) to occur to power the engine, we need a fuel, a heat source, and oxygen coming...
So, Donald... An Open Letter to Donald Trump
Soaring oil and gas prices and the devastation of Hurricanes Katrina and Rita have finally brought an issue into sharp focus for the public: When it comes to energy, we're in trouble! We import far more crude oil than we produce in the United States; fully 70 percent of our oil comes from five countries in the Middle East, arguably the most volatile and politically unstable region in the world.We need to develop sustainable, renewable, safe sources of energy to provide power for our homes and businesses. One real danger is, however, that as the memory of Katrina fades and the prices drop at the gas pump, the public will also lose focus, and fail to continue the pressure needed for politicians to...
Electric Breast Pumps
Although expensive, electric pumps are more efficient than hand or battery powered pumps. One advantage of with the electric pumps is that these pumps can be rented. Also, many of these pumps are well serviced by the manufacturers and are also often covered by health insurance.Electric breast pumps can be used frequently. Both breasts can be pumped simultaneously by plugging the pump directly to an electric outlet. Most efficient breast pumps for initial usage as well as for maintaining the milk supply are the hospital-grade pumps that can be rented or purchased. However, professional quality breast pumps available only for purchase and cannot be rented.Most work place lactation programs provide...
A Tutorial to Pumps
Pumps are amazing mechanical devices and an important invention. They are used to move gas or liquid from one pressure are to another pressure area. They are used in a variety of ways from providing water to providing heat to providing energy. Pumps have been around since the 3rd century and are still going strong today.There are two main categories of pumps: positive displacement pumps and dynamic pumps. Positive displacement pumps have little leakage as they used sealed chambers to force the fluid or gas. Dynamic pumps use momentum to move the fluid or gas and the chambers are not sealed. In these two categories there are various types of pumps.The following list explains the different types...
Heat Pumps
A heat pump is an electric cooling and heating system used to compress and decompress gas to heat or cool a house. This mechanical device pumps heat from a cooler to a warmer location and can extract heat from air, water or the earth. Heat pumps functions like an air conditioner in the summer and an electric furnace in the winter, thus encompassing both a heating and cooling unit in one device. The COP, or coefficient of performance, which calculates the ratio of heat output to electric power consumption, measures the performance of a heat pump.Heat pumps are the most resourceful form of electric heating in moderate climates, and cool a house by collecting the heat inside the house and effectively...
Used OMC Parts
Introduction:There are various marine companies having worldwide reputation in selling and repairing in used OMC parts. Various used OMC parts are available in the market, if one can not afford to purchase the new OMC part, old and repaired OMC part are the best option. These parts are comparatively cheap and are in very good conditions and are easily affordable. Some of the used OMC parts available in the market are as given below.Used Propellers:The OMC propellers are generally stainless steel make and available sometimes with three blades and generally most of the OMC requires four blades. These are the heart of any vehicle and are available in various HP capacities. The propeller rating and...
Used OMC Parts
Introduction:There are various marine companies having worldwide reputation in selling and repairing in used OMC parts. Various used OMC parts are available in the market, if one can not afford to purchase the new OMC part, old and repaired OMC part are the best option. These parts are comparatively cheap and are in very good conditions and are easily affordable. Some of the used OMC parts available in the market are as given below.Used Propellers:The OMC propellers are generally stainless steel make and available sometimes with three blades and generally most of the OMC requires four blades. These are the heart of any vehicle and are available in various HP capacities. The propeller rating and...
Home Improvement Costs for 2006
The following costs are intended as ballpark estimates for repairs and improvements to a typical three bedroom home. The costs are based on information obtained in the east-central area of Ontario. Our experience has shown that actual contractor quotations can vary by as much as 300%. It is advisable to obtain estimates from more than one contractor.Roofing/Flashings/Chimneys Install conventional asphalt shingles over existing shingles $1.25-$2.00 per sq.ft. Strip and reshingle on medium sloped roof $2.50-$3.50 per sq.ft. Strip and reshingle on steep, high or complex roof $4.00-$6.00 per sq.ft. Strip and re-roof with cedar shingles $5.00-$9.00 per sq.ft. Strip and replace built-up tar and...
Home Improvement Costs for 2006
The following costs are intended as ballpark estimates for repairs and improvements to a typical three bedroom home. The costs are based on information obtained in the east-central area of Ontario. Our experience has shown that actual contractor quotations can vary by as much as 300%. It is advisable to obtain estimates from more than one contractor.Roofing/Flashings/Chimneys Install conventional asphalt shingles over existing shingles $1.25-$2.00 per sq.ft. Strip and reshingle on medium sloped roof $2.50-$3.50 per sq.ft. Strip and reshingle on steep, high or complex roof $4.00-$6.00 per sq.ft. Strip and re-roof with cedar shingles $5.00-$9.00 per sq.ft. Strip and replace built-up tar and...
Rebuilt Powerheads: Cost Effective Answer to Expensive Powerheads
A powerhead is a submerged water pump. Though the functions are essentially similar in nature, it does have a few features that a normal water pump does not have. For starters, it has the ability to accept air from the surface. This is done with the help of a hose that goes directly to the surface. This process of aeration gives superior air quality. At other times, the Powerheads can be used to pump water. The numerous technological advances in the sphere of powerheads have meant that they now posses various feature that give increased functionality. Some of the powerheads in use today, come with a filter that is built in, and which significantly increases water clarity.As the demand for powerheads...
The Wages of Science
In the United States, Congress approved, last month, increases in the 2003 budgets of both the National Institutes of Health and National Science Foundation. America is not alone in - vainly - trying to compensate for imploding capital markets and risk-averse financiers.In 1999, chancellor Gordon Brown inaugurated a $1.6 billion program of "upgrading British science" and commercializing its products. This was on top of $1 billion invested between 1998-2002. The budgets of the Medical Research Council and the Biotechnology and Biological Sciences Research Council were quadrupled overnight.The University Challenge Fund was set to provide $100 million in seed money to cover costs related to the hiring...
Automotive Career Week is Here
Looking for career in the automotive sector? You are not alone. This week over 600 car dealerships, 5 major automakers and many OEM suppliers are participating in ACW Automotive Career Week, its here. Eleven State Governors have issued important proclamations. Automotive Career Week is partly sponsored by NADA North American Dealer Association of auto dealerships and it starts on Monday, October 24 and runs through the entire Business Week.There are participating dealers involved in forty-nine states and Washington D.C., right now Puerto Rico is too flooded. The eleven main states where the State Governments have a made decrees are in California, Delaware, Georgia, Kentucky, Missouri, Nebraska, New...
In a hot water (hydronic) heating systems, water is heated in a gas, oil, or electric boiler and circulated through pipes to convectors; older systems use radiators. When the thermostat calls for heat, a "circulator pump" in the boiler return line moves water through the pipes to the convectors, which give up heat to the rooms. When the circulator is not pumping, a "flow-control valve" stops the water flow to protect the convectors from overheating.Older gravity systems have no circulator pumps and depend on lighter, heated water rising in the pipes to the radiators; and cooler, heavier water gravitating back to the boiler.Single-pipe systems, with short branch lines to each convector, are used in...
Hot Water Heating Systems: Modern Conventional Boiler / Conventional Systems
In a hot water (hydronic) heating systems, water is heated in a gas, oil, or electric boiler and circulated through pipes to convectors; older systems use radiators. When the thermostat calls for heat, a "circulator pump" in the boiler return line moves water through the pipes to the convectors, which give up heat to the rooms. When the circulator is not pumping, a "flow-control valve" stops the water flow to protect the convectors from overheating.Older gravity systems have no circulator pumps and depend on lighter, heated water rising in the pipes to the radiators; and cooler, heavier water gravitating back to the boiler.Single-pipe systems, with short branch lines to each convector, are used in...
A Clear Pond - Proper Pond Filtration
Keeping a clear pond in the warm or hot summer months involves these key ingredients for proper filtration:[1] Adequate water circulation and movement.A general principle (not a rule) of about 100-200 gph per 100 gallons can work for this. This can be achieved with more than one pump and even a large aeration device (air stone). As for the air stone, I find they are excellent for vertical circulation, often better than water pumps of greater gph. A large double air pump such as a Million Air 600, Whisper 800, or Maxima with two air stone can circulate at a rate up to 500 gph. A way to check this is to place the air stone down a narrow PVC tube or aquarium lift tube, then place the top of the tube...
Your Insulin Pump Infusion Set Can Make All The Difference
A Typical infusion set is made up of the pump connector, a length of tubing and the needle or cannula. Different sets suit different people and it is important to experiment when you first get your pump, to find out what works for you. If you are having problems with unexplained high sugars when using your insulin pump and you are confident your control should be better, the chances are that it is due to problems with the infusion set. Tiny blockages can build up in the needle or cannula that the pump can't detect. Changing the infusion set regularly (typically every 24 to 72 hours dependent on the type) is vital for good performance. KEY INFUSION SET CHOICES If you are still considering which...
Drying operations relate to plastic forming operations and casting operations. Forced drying in controlled driers expedites production and guarantees continual controlled production flow.Driers are usually built into automatic casting machines and roll forming machines. The drier is often designed to accommodate the different stages of drying. Airflow is adjustable throughout the drier.When a piece of ceramic ware is first formed, the particles are separated by a water layer which can be easily and safely removed. For that reason, excessive heat can be supplied at this stage of drying.Once the particles touch, the process becomes diffusion controlled and the water molecules must move slowly through...
Heat Pumps
A heat pump is an electric cooling and heating system used to compress and decompress gas to heat or cool a house. This mechanical device pumps heat from a cooler to a warmer location and can extract heat from air, water or the earth. Heat pumps functions like an air conditioner in the summer and an electric furnace in the winter, thus encompassing both a heating and cooling unit in one device. The COP, or coefficient of performance, which calculates the ratio of heat output to electric power consumption, measures the performance of a heat pump.Heat pumps are the most resourceful form of electric heating in moderate climates, and cool a house by collecting the heat inside the house and effectively...
All Mercedes Benzes have a two speed wiper motor with a intermittent feature on them, the wipers are controlled by a switch on the stearing column.As the switch is rotated the wipers at a slow medium or fast setting, pressing down on the end of the switch operates the intermittant feature and the windshield washer system at the same time on the wiper motor the intermittent relay is mounted.Mercedes benz wagons have a rear window wiper washer system, it is controlled by three push buttons at the left top corner of the console.This system Has a low speed only with a intermittent with washer, Mercedes also comes with headlamp wiper system as well, and is also operated by the windshield wiper switch...
In a hot water (hydronic) heating systems, water is heated in a gas, oil, or electric boiler and circulated through pipes to convectors; older systems use radiators. When the thermostat calls for heat, a "circulator pump" in the boiler return line moves water through the pipes to the convectors, which give up heat to the rooms. When the circulator is not pumping, a "flow-control valve" stops the water flow to protect the convectors from overheating.Older gravity systems have no circulator pumps and depend on lighter, heated water rising in the pipes to the radiators; and cooler, heavier water gravitating back to the boiler.Single-pipe systems, with short branch lines to each convector, are used in...
Used OMC Parts
Introduction:There are various marine companies having worldwide reputation in selling and repairing in used OMC parts. Various used OMC parts are available in the market, if one can not afford to purchase the new OMC part, old and repaired OMC part are the best option. These parts are comparatively cheap and are in very good conditions and are easily affordable. Some of the used OMC parts available in the market are as given below.Used Propellers:The OMC propellers are generally stainless steel make and available sometimes with three blades and generally most of the OMC requires four blades. These are the heart of any vehicle and are available in various HP capacities. The propeller rating and...
Automotive Career Week is Here
Looking for career in the automotive sector? You are not alone. This week over 600 car dealerships, 5 major automakers and many OEM suppliers are participating in ACW Automotive Career Week, its here. Eleven State Governors have issued important proclamations. Automotive Career Week is partly sponsored by NADA North American Dealer Association of auto dealerships and it starts on Monday, October 24 and runs through the entire Business Week.There are participating dealers involved in forty-nine states and Washington D.C., right now Puerto Rico is too flooded. The eleven main states where the State Governments have a made decrees are in California, Delaware, Georgia, Kentucky, Missouri, Nebraska, New...
Drying operations relate to plastic forming operations and casting operations. Forced drying in controlled driers expedites production and guarantees continual controlled production flow.Driers are usually built into automatic casting machines and roll forming machines. The drier is often designed to accommodate the different stages of drying. Airflow is adjustable throughout the drier.When a piece of ceramic ware is first formed, the particles are separated by a water layer which can be easily and safely removed. For that reason, excessive heat can be supplied at this stage of drying.Once the particles touch, the process becomes diffusion controlled and the water molecules must move slowly through...
Reducing Energy Costs with Brazed Plate Heat Exchangers
Finding ways to reduce energy is always a smart way to cut costs, but with the current cost of consumption, conserving energy can make a big impact on the bottom line. With improved technology of heat exchangers, dramatic energy savings are now possible when brazed plate heat exchangers are used in various applications. What are brazed plate heat exchangers? Brazed plate heat exchangers aren't a brand of heat exchangers, but a style. The two most common types are tube and shell, and plate and frame. The shell and tube heat exchanger design consists of u-shaped heating elements encased in a cylindrical tube. On the other hand, plate and frame heat exchangers are a "sandwich" of heat conducting...
The Wages of Science
In the United States, Congress approved, last month, increases in the 2003 budgets of both the National Institutes of Health and National Science Foundation. America is not alone in - vainly - trying to compensate for imploding capital markets and risk-averse financiers.In 1999, chancellor Gordon Brown inaugurated a $1.6 billion program of "upgrading British science" and commercializing its products. This was on top of $1 billion invested between 1998-2002. The budgets of the Medical Research Council and the Biotechnology and Biological Sciences Research Council were quadrupled overnight.The University Challenge Fund was set to provide $100 million in seed money to cover costs related to the hiring...
New Year Resolutions Worth Contemplating
Still feeling a pang of guilt because last year's resolutions did not make it past Valentine's Day? Perhaps those resolutions never stood a chance because you did not prime the pump first! Let me explain. Most of us are looking for similar things in life: more time, love, joy, and quality of life. What we sometimes forget, is that we first need to prime the pump in order to get what we want. On my grandfather's farm was a creaky old water pump. Before it would start drawing water from the well, it had to be primed with a cup of water. As a child, I used to marvel at the mystery of it all - first pouring a cup of water down the pump and then pumping the squeaky lever up and down, up and down... until...
How to Make a Smooth Move with your Pet - Moving with Fish
It is often risky and impractical to try to move fish. Fish are most sensible to to temperature changes that can hardly be avoidable during a move. So if they don't have any special sentimental value to you - just don't move them. Many aquarium stores may accept them and even offer a store credit, which you can use in another location close to the place you moved in. But if you don't have this option here are some suggestions you may consider during your move:Firstly, you need to take fish out of the aquarium and move them separately. Tanks are rarely built to withstand the stress of a move, especially with water inside. So you need to drain it after, of course, you finished putting all your fish in...
The Wages of Science
In the United States, Congress approved, last month, increases in the 2003 budgets of both the National Institutes of Health and National Science Foundation. America is not alone in - vainly - trying to compensate for imploding capital markets and risk-averse financiers.In 1999, chancellor Gordon Brown inaugurated a $1.6 billion program of "upgrading British science" and commercializing its products. This was on top of $1 billion invested between 1998-2002. The budgets of the Medical Research Council and the Biotechnology and Biological Sciences Research Council were quadrupled overnight.The University Challenge Fund was set to provide $100 million in seed money to cover costs related to the hiring...
The History of Wind Generated Power
With the increased costs of energy derived from fossil fuels, many consumers are interested in alternative sources of energy. Unfortunately the market trend tells us that little to no relief in oil prices is in sight. A great source of power can be harnessed from the wind using electricity generating windmills. Below is a brief history of wind power, and how it came to be.Wind power has been harnessed for many, many years. Nobody knows for sure when man started using the wind's power to grind flour or pump water, but it is thought that the first windmill appeared in the Persian region. From there this windmill technology spread back to northern Europe. Windmills crafted by the Dutch were used...
Oxygenating Fountains
One of the practical uses for setting up a water fountain is to provide oxygen for wildlife such as Koi fish. The extra movement of water that a fountain provides enriches the water with oxygen. This not only provides oxygen for the creatures you choose to inhabit your water feature but also keeps the water from going stagnant and attracting wildlife you do not want -- such as mosquitoes. Oxygenating fountains are most practical additions for garden ponds. If your primary intention is to create more oxygen for your water feature, it is advisable to purchase the largest water pump that you can afford. Place the water pump directly onto the fountainhead nozzle and set the nozzle to then produce the...
A powerhead is a submerged water pump. Though the functions are essentially similar in nature, it does have a few features that a normal water pump does not have. For starters, it has the ability to accept air from the surface. This is done with the help of a hose that goes directly to the surface. This process of aeration gives superior air quality. At other times, the Powerheads can be used to pump water. The numerous technological advances in the sphere of powerheads have meant that they now posses various feature that give increased functionality. Some of the powerheads in use today, come with a filter that is built in, and which significantly increases water clarity.As the demand for powerheads...
The Wages of Science
In the United States, Congress approved, last month, increases in the 2003 budgets of both the National Institutes of Health and National Science Foundation. America is not alone in - vainly - trying to compensate for imploding capital markets and risk-averse financiers.In 1999, chancellor Gordon Brown inaugurated a $1.6 billion program of "upgrading British science" and commercializing its products. This was on top of $1 billion invested between 1998-2002. The budgets of the Medical Research Council and the Biotechnology and Biological Sciences Research Council were quadrupled overnight.The University Challenge Fund was set to provide $100 million in seed money to cover costs related to the hiring...
Pump Maintenance and Repair for Pressure Washers
If you have a pressure washer business you will eventually need to change out or repair the pump. There are a few things you should know to make such change outs easy. You may also need to study up on preventative maintenance so that you do not have to worry about pump failure. Your pressure washer probably has one of two different pumps if it is industrial grade. Either a Cat Pump or a General pump; both are industry standards. General is the leader in the industry for sales and many prefer Cat as it sucks better from plastic water tanks.Your pump is powered by two parallel belts connected to your engine. You should make sure not to starve your pump from water. When the water tank is empty turn...
Using Fish Tank Accessories To Beautify Your Fish Tank
Did you know that you can make your fish tank beautiful by using fish tank accessories? Regardless of the size of your fish tank, there are fish tank accessories available for your kind of tank and your budget. If you have a large fish tank, you can make it even more appealing by adding fish tank accessories to it. These fish tank accessories help enhance the beauty of your fish. You may be pleasantly surprised to know that fish tank accessories do not require a lot of money. In fact, there are fish tanks that already come with accessories already built in. If your fish tank holds 10 gallons of water or more, install fish tank accessories such as a water pump and an air filter. A water pump keep the...
Home Generators
Home generators are designed to provide electricity in times of power shortages or failures for a short duration of time. Home generators not only light up the house in case of power outages but also, depending on their capacity, provide power to run appliances like air conditioners, refrigerators, furnaces, television and heaters.Home generators are available in two types: portable and stationery or standby generators. In times of power shortages or disruption of power, small portable home generators can be used to run some selected appliances such as lights, refrigerators, furnaces and sump pump. Generators come in varying size and capacities ranging from 1 kilowatt to 100 kilowatt. Home...
Solar Powered Water Pumps
A great way to put solar panels to use is to install a solar powered water pump for your well. Even though windmills have more commonly been used to power water pumps, solar panels are starting to become the prefered method for pumping water in remote locations. This is great news for so many reasons. First of all, there are huge amounts of land that have been thought to be inhabitable because potable water was not available. Well, just imagine a solar well that taps deep down water sources in remote deserts all over our planet. Someday this could that overpopulation will not be a problem as vast amounts of new real estate becomes available for more and more people. Agricultural land may someday...
Water Pumps
Water is unarguably the most vital commodity for a human being. The uses of water are endless and each has its own significance. From drinking and washing to cooking and cleaning, water is an important component of all these activities. The sources of water are numerous. In order to extract the precious liquid and use it to its fullest, man devised pumps. Water pumps have been in existence for several centuries. Ever since Archimedes invented the screw pump to draw water, the use of these devices has grown in leaps and bounds. In simple terms, a pump is a device used to move a liquid from one place to another with the help of air pressure. Water pumps are primarily used to draw water from rivers...
Guide to Lubeck, Germany
Unique pointsLubeck is a charming Hanseatic city, surrounded by a canal and a river. It has plenty of parks trees and open spaces. The best known symbol of the city is the Holtesten gate, built in 1477. Unfortuntately the gate was covered in scaffolding during my visit in June 2005, so I didn't get any photos! The town hall (Rathaus) was first constructed in 1230, it is regarded as one of the oldest and most magnificent buildings in Germany. The whole of the old town is now a UNESCO world heritage site. The old town is quite compact and can easily be covered by foot. Lubeck is known as the home of marizpan. The story goes that during a siege the city ran out of flour...
The Wages of Science
In the United States, Congress approved, last month, increases in the 2003 budgets of both the National Institutes of Health and National Science Foundation. America is not alone in - vainly - trying to compensate for imploding capital markets and risk-averse financiers.In 1999, chancellor Gordon Brown inaugurated a $1.6 billion program of "upgrading British science" and commercializing its products. This was on top of $1 billion invested between 1998-2002. The budgets of the Medical Research Council and the Biotechnology and Biological Sciences Research Council were quadrupled overnight.The University Challenge Fund was set to provide $100 million in seed money to cover costs related to the hiring...
How Often Do You Change Oil?
When do you need to replace your lubricating oil? If you have a large quantity of lubricating oil to change, it is going to burn a hole in your pocket. So most plant operators try to preserve the properties of the lubricating oil for as long as possible.One of the most important functions of lubricating oil is to reduce the friction between the moving parts of machinery. But there are other features to look at.When do you know that the oil needs to be changed? Below is a rough guide:1. Viscosity has changed by 10% 2. Flash Point has dropped to 150 degree Celsius 3. Water Content has reached 2% 4. TBN, or Total Base Number has reduced by 20% 5. Insoluble Content has...
Automotive Career Week is Here
Looking for career in the automotive sector? You are not alone. This week over 600 car dealerships, 5 major automakers and many OEM suppliers are participating in ACW Automotive Career Week, its here. Eleven State Governors have issued important proclamations. Automotive Career Week is partly sponsored by NADA North American Dealer Association of auto dealerships and it starts on Monday, October 24 and runs through the entire Business Week.There are participating dealers involved in forty-nine states and Washington D.C., right now Puerto Rico is too flooded. The eleven main states where the State Governments have a made decrees are in California, Delaware, Georgia, Kentucky, Missouri, Nebraska, New...
Hot Tubs - The Basics
A HOT, generally known BUCKET also under the name of jacuzzi or simply thermal spa at the house, is a large manufactured bucket or a small swimming pool completely of the water of heating and used mainly for steeping, relieving, the massage, or hydrotherapy. The hot buckets are usually the located outside-of-doors, because of their enormous, and come weight equipped with the multiple voyage out of jet. There are two kinds different of hot buckets 1. - Hot Buckets out of wooden dishes 2. - Hot Buckets in Fibre figure of glass-Reinforced (thermal spas) With the hot buckets are in the majority of the cases heated by means of electricity or natural gas. Nevertheless, of the hot buckets can also be found...
Marine Electronics
Autopilots The first self-steering gear was introduced in the 1920's to control model yachts but it was not until 1948 that the principle was applied to full scale yachts. Standing at the helm for lengthy periods, monitoring instruments and keeping a good look out can be very tiring. An autopilot relieves the helmsman from steering the correct course leaving him free to maintain a proper watch. The autopilot can be set to either steer a compass course or a course relative to the wind. A fluxgate compass or electronic wind indicator feeds information to a microprocessor which then makes the necessary rudder movements to return the vessel to it's required course. The mechanical power is applied to the...
Arizona Mountain Biking - Discover Red Rock Country Up Close!
Of the many superb Arizona mountain biking areas, Sedona - approximately 80 miles North of Phoenix - is destined to become a major attraction for bikers.While still relatively undiscovered and uncrowded, it offers spectacular biking trails for novices and experienced riders alike.Although, at an altitude 4500 feet, Sedona is free of the severe desert heat of southern Arizona, it is wise to do you biking in the early morning. No Arizona mountain biking trail should be attempted without carrying plenty of water. Sedona also escapes the northern mountain snows, making it ideal for mountain biking.Sedona is located at the mouth of Oak Creek Canyon, and at the center of the legendary Red Rock Country...
Home Improvement Costs for 2006
The following costs are intended as ballpark estimates for repairs and improvements to a typical three bedroom home. The costs are based on information obtained in the east-central area of Ontario. Our experience has shown that actual contractor quotations can vary by as much as 300%. It is advisable to obtain estimates from more than one contractor.Roofing/Flashings/Chimneys Install conventional asphalt shingles over existing shingles $1.25-$2.00 per sq.ft. Strip and reshingle on medium sloped roof $2.50-$3.50 per sq.ft. Strip and reshingle on steep, high or complex roof $4.00-$6.00 per sq.ft. Strip and re-roof with cedar shingles $5.00-$9.00 per sq.ft. Strip and replace built-up tar and...
Marine Electronics
Autopilots The first self-steering gear was introduced in the 1920's to control model yachts but it was not until 1948 that the principle was applied to full scale yachts. Standing at the helm for lengthy periods, monitoring instruments and keeping a good look out can be very tiring. An autopilot relieves the helmsman from steering the correct course leaving him free to maintain a proper watch. The autopilot can be set to either steer a compass course or a course relative to the wind. A fluxgate compass or electronic wind indicator feeds information to a microprocessor which then makes the necessary rudder movements to return the vessel to it's required course. The mechanical power is applied to the...
Silicon Solar Inc Unveils the New GridMaxx SI Solar Panel Series
Silicon Solar Inc, the world leader in innovative solar technologies for the last seven years, has unveiled two new additions to its top-quality solar panel line; the GridMaxx SI Series. Available in two models, the 110W and the 165W, the GridMaxx SI series is perfect for remote power systems, grid-tied solar systems, farm and telecom equipment, among many others. Silicon Solar Inc, the world's leader in innovative solutions for solar technologies and products has released two new, high-end, high-output solar panels. Silicon Solar is now offering their 110W and 165W GridMaxx SI Solar Panels, used Grid Tie systems for houses or for even smaller needs such as water pumps, telecommunications devices...
A powerhead is a submerged water pump. Though the functions are essentially similar in nature, it does have a few features that a normal water pump does not have. For starters, it has the ability to accept air from the surface. This is done with the help of a hose that goes directly to the surface. This process of aeration gives superior air quality. At other times, the Powerheads can be used to pump water. The numerous technological advances in the sphere of powerheads have meant that they now posses various feature that give increased functionality. Some of the powerheads in use today, come with a filter that is built in, and which significantly increases water clarity.As the demand for powerheads...
In a hot water (hydronic) heating systems, water is heated in a gas, oil, or electric boiler and circulated through pipes to convectors; older systems use radiators. When the thermostat calls for heat, a "circulator pump" in the boiler return line moves water through the pipes to the convectors, which give up heat to the rooms. When the circulator is not pumping, a "flow-control valve" stops the water flow to protect the convectors from overheating.Older gravity systems have no circulator pumps and depend on lighter, heated water rising in the pipes to the radiators; and cooler, heavier water gravitating back to the boiler.Single-pipe systems, with short branch lines to each convector, are used in...
The Wages of Science
In the United States, Congress approved, last month, increases in the 2003 budgets of both the National Institutes of Health and National Science Foundation. America is not alone in - vainly - trying to compensate for imploding capital markets and risk-averse financiers.In 1999, chancellor Gordon Brown inaugurated a $1.6 billion program of "upgrading British science" and commercializing its products. This was on top of $1 billion invested between 1998-2002. The budgets of the Medical Research Council and the Biotechnology and Biological Sciences Research Council were quadrupled overnight.The University Challenge Fund was set to provide $100 million in seed money to cover costs related to the hiring...
Buying The Right Water Pump For Your Needs Can Be A Tough Choice
The trend prevailing at present is to do-it-yourself, and one of the many tasks that needs to be done is the purchase/replacement of the water pump. So it is important to know the pertinent facts about them to enable you make a sound decision. Firstly the price, which can range from $60 to $500 or more, depending on the quality and the features available. The capacity of the pump, ranging from 1/6 HP to 1/2 HP, too plays a big part in its pricing. As per the thumb rule, the weakest is the cheapest. The next decision you need to make is to choose between a pedestal and submersible pump. Both have their advantages and disadvantages. A submersible pump is out of sight (underwater) and therefore silent...