Best Science Resources
Alle post’s die toegevoegd zijn onder Best Science Resources
Alle post’s die toegevoegd zijn onder Best Science Resources
Gepost door admin op 21/02/2010
Toegevoegd onder: Best Science Resources
Add this to the obvious truth that the world’s climate is changing - everyone is aware that the weather patterns just aren’t like they used to be and this appears to be caused by global warming. Alternative Energy Sources are becoming increasingly popular and affordable. The two main types of home electricity generation are solar power and wind power. Solar power generation is the use of solar panels to capture the sun’s rays and convert it into electricity. With today’s soaring prices many residential customers are looking for alternatives to power their homes. With the alarming rates that fuel prices are rising, various groups, economists and environmentalist are now promoting alternative energy. Wind power is one of these effective alternatives. The use of residential wind power has increased significantly over the years. The vertical axis wind turbine which is sometimes referred to as the (VAWT) for short, is a wind power machine that has been designed so that it maybe attached to a flat roof or stand on a platform in either the rural or urban environment. This type of generator has several advantages to it such as, because of the fact that it can be placed at the bottom close to the ground, the tower does not have to support the generator can be placed at the bottom, not only that but the turbine does not need to be pointed in the direction of the wind.Such a system tends to be a smaller scale generators with correspondingly less power output than those big commercial wind turbines that are popping up around the country. Less than 10 kilowatts of power is the typical output for a small wind system. These turbines have smaller blade diameters and towers, and can be used to decrease or possibly even eliminate the electric bills of homeowners. Many people are worried that a small wind turbine may still produce too much noise.Source: Enercon Wind Turbines
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Gepost door admin op 16/02/2010
Toegevoegd onder: Best Science Resources, Education + Training, Mathematics Infos
Algebra is good at differentiating relationships between things that vary from time to time. For example, the relationship between a person’s income and advancement of his expenses could be found and predicted using simple algebraic equations. Maths is not an easy subject for almost all students. Many software applications are available with a mixed bag of subject area explanations so students able to handle any capacity of learning algebra can work around the subject without difficulty. It also helps students to comprehend importance of Algebra in real life as well as within industry solutions. Broader functions applied in algebra include Graphing quadratic inequalities , Solving compound inequalities , Solving quadratic inequalities , Adding and Subtracting matrices etc.
Although algebra is an easy to follow course of study, students may face a lot of trouble if they do not practice the basic concepts hard enough. This makes initial math skills necessary to help students successfully advance from algebra and make headway into more high-level math with confidence.
Facilitating algebra software applications provide more than what can be found in the students practice books, such as homework help, interactive lesson plans, games and a worksheet tool or graphing calculator. The high quality software will have all these features as well as easy usability and coverage of wide area of themes.
The teaching tools are always useful for methods like text, audio, animation, video and games are put in to use. All the important topics should also be covered from Pre-Algebra through Algebra II. Important topics in these courses are: Finding complement of an angle, inverse of functions, finding type of polynomial, determine if line is Subtracting polynomials, Finding domain of a function, Graphing a parabola and Adding rational expressions etc.
Some algebraic software would only show results, while some other (much more suitable for elementary algebra) give away techniques and ‘how-to’ guides on math concepts that are being used. For students, ease of use of the software is the number one concern. Thus, the software better be loaded with value added features like high quality and timely user support, enclosed help options, and simply explained math wizards.
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Gepost door admin op 08/12/2009
Toegevoegd onder: Best Science Resources
A wind-powered house is advised to have solar panels as well for a more efficient combination. Taking in these steps, you will be able to save the environment, spend little or none in the later part, and combat power outages. What then are the things that you should consider if you are planning to place a wind generator at your own home?First, your house should be on a big area. Wind power turbines work best when spread over an acre of land. Electricity companies are ready to purchase this surplus electricity, as this is far better than the electricity produced from non-renewable sources of energy such as coal, diesel and gas. You can build your own wind power generators and you will require a few items such as blades, a tower, a battery, a DC motor and a tail. DC motor should be carefully selected as it is the costliest among all other items and most importantly you should go for quality blades. You can get all these items from a nearby store; however a few items you can make yourself at your home. Several surveys have shown that a small wind turbine does not affect the value of a home. Although there have been no formal studies thus far, informal and anecdotal evidence supports the claim that property values do not decrease after the installation of a wind turbine. In fact, a wind turbine on your property may be a significant selling point that will allow you to command a higher price for your home. Another alternative is to build your own wind turbine at a very substantial saving. It is possible for any farmer or home owner, whether located in city or country,to access this free form of electric power and so become completely independent of the power utility. It is not necessary to have continuous high winds. Even a gentle breeze will generate power. A very good wind turbine can be constructed using used or new auto parts.
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Gepost door admin op 25/11/2009
Toegevoegd onder: Best Science Resources, Investment Hall, Road Trippers
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Gepost door admin op 22/11/2009
Toegevoegd onder: Best Science Resources
I did a lot of research and finally settled on a set of plans. There are a lot of schematics out there, but beware, not all are created equal. The main points that finally led me to my chosen plans were:Word of mouth recommendations Bonuses (DIY solar panel instructions, how to save $$ on oil, etc.) How to get all the parts for as cheap as possible (with many parts like the tower for free!) Money back guarantee (don’t risk your cash needlessly) After a lot of comparison I finally settled on a set of plans and could not be happier. Its important to make sure you buy the right one’s its only $50, but I bet you worked for that money. Have?If you had the option of buying a $25,000 windmill or knowing how to build several windmills at $200 a piece, which would you choose? When it boils down to return on investment, those big windmills can take up to 25 years to pay for themselves. When that 25 years is up, I can guarantee that the windmill will be obsolete. That just doesn’t make much sense. On the other hand, if you know how to build your own inexpensive units, your looking at constant up to date windmills at a fraction of the cost, and you could build a lot of them. The generator will be hooked up to the utility grid and you can sell power to the utility if you produce more than you need. A residential wind turbine can produce all of the electricity you need if given the right conditions. DC motor to arrive you can get started on the other parts as outlined in your diy wind turbine plans. The instructions building wind turbine clearly show that the blades can either be fashioned from PVC or wood, with wood being preferred for bigger machines. We have had good luck building wooden blades from spruce we got from the lumber yard. It is strong and not that difficult to find good clear lumber. You do need good quality lumber as the forces of the wind, especially at blade tips when they are 8 foot diameter can be tremendous, in the hundreds of pounds. Don’t worry about the wind turbine blade construction being complicated either? Your set of blades can be made easily in one day with common tools.
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Gepost door admin op 09/11/2009
Toegevoegd onder: Best Science Resources, Education + Training, Mathematics Infos
It is safe to say that algebra is the center of mathematics. If you genuinely want to know about mathematics and its basic principles then you should have a clear and thorough knowledge of algebra. If someone asks you to get the product of 223 and 112, you can easily do it manually or with a computer. However, in a case where you need to work around the exponential of 223 and logarithm of 112, you will certainly need an algebraic software application. Graphing a circle will be easy for this given formula X2 + Y2 = 4 but when it comes for an inequality like (X-2)2 + (Y-4)2 > 20 then it will be quite harder to plot the graph. In this situation algebra software program can help you a lot since you only need to enter the inequality and graph will be plotted within very little time. Such software can easily work out any kind of algebraic, arithmetic and radical expressions of any kind of complexity.
Now it is very easy to find the domain and range of functions like Y = X2, you can just tell that X and Y can take any real number from the X-Y plane but have you ever thought of defining the domain and range of log(tan 2x + sin 3x) = cosine(-4)(2x). But thanks to algebra calculators, you can now solve these complicated sums in no time while being able to understand every step of the way that it takes you to successfully solve the mathematical question.
It is now, easier than ever to find the vertex and directrix or whether a parabola opens up or down, using algebra computer software. Addition, subtraction and multiplication of polynomials are quite dull, since they involve lots of terms to manipulate. However, by leaving the job up to algebra calculators, you will be able to get results within a shorter period with 100% accuracy. Similarly, algebra calculators can save the trouble for you in calculating matrices of 33 or 44 order or its opposite matrices.
So, with the introduction of algebra software programs, the times where you dreaded the sight of indices, fractions or radical equations , comes to an end. If you could not stand geometry, you may even start liking it afterwards thanks to the computerized algebra systems that will automatically plot everything you ever need.
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Gepost door admin op 05/08/2009
Toegevoegd onder: Best Science Resources, Education + Training, Mathematics Infos
Algebra is a primary concept in Mathematics, dealing with equations, inequalities, fractions and expressions. Being one of the leading subsections of mathematics, it forms an whole part of basic education. combinatorial mathematics, variables, polynomials and factorization are some of the mainstream areas that is being dealt by mathematics. As you move along advance algebraic equations, you will deal with symbols and set theories which allows you to compute unknown values based on predetermined facts.
Geometry is focused on using algebraic expressions to calculate dimensions of a circle, determining if a curve is a parabola or hyperbola or even pinning down the focus of a hyperbola. From the very basic computations of computing the midpoint of a line or the radius of a circle to the more complex operations of determining if a parabola opens up or to compute its directrix, algebra makes its presence visible to a high level of purpose in the field of geometry.
Algebra can solve any inequalities from linear or quadratic to radical or exponential. With algebra one can solve inequalities and even graph systems of fractional equations and linear inequalities. Playing with exponents is no longer an problem when you start using algebra. As in with every other arm of mathematics, in algebra too, basic laws and rationales can be applied to add, subtract, divide and multiply expressions in order to solve problems.
Whether you have problems in solving, comparing or converting fractions, algebra solvers can work their magic for you. The modern software that supports solving algebraic expressions are able to solve any math problem easily and in little time. Complex matrix equations like inverse matrix and other matrix operations can be handled with the algebra calculator software. Thanks to the algebraic solvers, simplifying algebraic expressions, which may involve factoring polynomials or involves determination of the GCF, has now been made a super easy job.
Students can get professional help from private instructors who will provide you with a step-by-step answer for your troubles. Math tutors are at your disposition for those complicated problems which can get you easily bugged. The math solver software applications that is widely available in today’s market provide myriad of options to suit a student’s every need. When it comes to algebraic software, you will find different functions from algebraic calculators to other functions that can tackle any math problem.
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Gepost door admin op 13/07/2009
Toegevoegd onder: Best Science Resources, Health Hub
Oncologists determine what type of treatment to administer for every patient. There are many options. There is no regular treatment option for malignant mesothelioma patients. This is because of the relative rareness of the disease, the high mortality rate and low treatment success rate, and the few scientific studies to provide meaningful statistics.
While prospects for patients with mesothelioma have been bleak, doctors have been making progress. Treatments for cancer are traditionally surgery (taking out the tumor and surrounding tissue), chemotherapy (poisoning cancerous cells) and radiation (killing cancer cells with radiation) There are problems with all three. Patients with mesothelioma have not responded well to traditional radiation therapy. Researchers are looking for ways of aiming radiation directly at the tumor in hopes that this will result in less damage to healthy tissue.
Surgery takes out the mesothelial cancerous tissue around the tumor. The surgery is difficult and challenging, with unknown effects or benefits to patients. Common chemotherapy drugs that work on other types of cancer usually do not work on mesothelioma, and different mixtures of these drugs have not been successful. As with radiation, research is going toward controlling the physical location of the treatment with emphasis on the pleural cavity.
The death rate for mesothelioma is so high that many of even the most sophisticated techniques in cancer treatment are tried out on patients. These include biologic therapy such as the agent interleukin 2 and anti-angiogenesis drugs such as thalidomide. A new drug that has shown results in improving survival is pemetrexed (brand name Alimta).
Oncologists consider the stage of mesothelioma, the location of the tumor, the patient’s age and state of health at the time. Two therapies that are extremely cutting-edge in fighting cancer are called photodynamic and gene therapy. Mesothelioma patients sometimes become involved in clinical trials in this area, and see benefits.
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Gepost door admin op 20/04/2009
Toegevoegd onder: Best Science Resources, Education + Training, Mathematics Infos
It is an area of mathematics that use letter of the alphabets instead of numbers to derive results for a given situation. It is this generalization that often frightens many and shudders some. topics of algebra extend from working with equations to factoring binomials all the way to finding the y-intercept. Most people begin to learn Algebra by adding, subtracting, reducing and simplifying fractions. later on, they would move on to more advanced stages of solving algebraic equations using the greatest common factors and converting fractions in to decimals.
There are numerous higher level subjects. First there are exponents. An exponent is the tiny number placed to the right and slightly above a number or algebraic expression. In this example (x + y)3 where the 3 is the power and denotes the power to which that number is exponentiated. The above algebraic expression is read as, x plus y to the third power. While working with exponents you will often come across exercises that require you to add, subtract, multiply and divide. If you pick up the basic principles, you will shortly get down to working with rational and negative powers and if you think those are not challenging enough, hopefully complex number will spin your head. A radical, simply put, is the reversing of an exponent. Radical expressions are referred by the symbolic representation “V” and when placed alongside number 4, it is read as square root of 4, which is equal to 2. The inverse of “V” symbol is “^” which denotes that the number it refers to is a multiple of the principle number. Therefore, 2^2 which is read as 2 to the 2nd power, equals 4. Additionally, powers can be added, subtracted, multiplied or divided by radicals. Radicals can be converted into exponents and exponents back into roots. If exponents and roots aren’t enough, there is always graphing. Start with graphing straight lines and defining if the line is horizontal or vertical or something else. Does the line have an x-intercept or a y-intercept? Furthermore, try and see if you can find the slope of a line. you master the mathematical art of graphing, you will chance on a whole new world full of parabolas and hyperbolas.
While you are learning algebra if the terms and concepts seem too much to handle, relax and take a break. There are many resources out there that can help you master quadratic systems of equations, quadratic formulas and polynomials. Look for math tutors or software systems that will walk you through step-by-step process on how to solve any problem. Know that frustration is not your only friend because any of these tools can help you become an algebra guru in no time.
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Gepost door admin op 19/05/2008
Toegevoegd onder: Best Science Resources
MOSAIC HAS COME A LONG WAY
>From ancient times staining glass has challenged the abilities
and imaginations of the great alchemists. From East to West the
sheer beauty of stained glass won the hearts of Kings, emperors,
sultans and nobles. For a millennium architects have designed
Palaces, Castles, Villas, and Spas and graced them with mosaics
and stained glass interior and exterior elements.
Today meshglass combines the sumptuous colours of stained glass
in a myriad of patterns. The meshglass system lets you
customize stained glass and mirror designs to order - at no
“extra” for the privilege. The design tool visuals are
great-very true to life.
SEE the preview > www.meshglass.com/builder.htm
Duncan’s inspiration was born of digital technologies and a
creative desire to invent a totally new and eco friendly
product… Linda Garlands Bamboo ideas were inspiring him at a
time when mosaic was having new décor interest in “Home and
garden” sections of the media. Duncan wanted color design
flexibility, utilitarian and safety benefits and the product to
consist of freely available eco friendly materials.
meshglass - alchemy by design Using a stained glass palette we
“color by number” into 20 patterns. See / design a huge
combination of patterns in interior decoration colours. Design
tools were created to display life like visual and be user
friendly. Try our tools at meshglass online.
www.meshglass.com/builder.htm
Versatile in appearance and application, meshglass now offers
over 30,000 design combinations - using our unique process.
meshglass is a décor design solution for interior and exterior
surfaces including walls, ceilings, pools, fountains, bathrooms,
spas, showers, kitchens, bars, and resort décor. Ideal for
interiors - weatherproof for exterior décor; fade free colours
and high resistance to fire and water.
We intend to keep improving our design systems and process and
would greatly appreciate any ideas, comments, and suggestions.
Please feel free to write to us at PR@meshglass.com
meshglass is displayed in three showrooms and distributed by
Nemo Tile Company Inc, locations are Manhattan, Hicksville,and
Jamaica. Founded in 1921 at 177th St. and Jamaica Ave Nemo has
supplied the Waldorf Astoria hotel, the American Airlines
terminal at John F. Kennedy International Airport and the Grand
Concourse in the Bronx.
A walk through any of Nemo’s three warehouses offers a capsule
tour of the mosaic tile industry. - (Telephone 212 505 0009)
Duncan M Kirk - President - Meshglass Ltd - December 05
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