Search Results - Boron
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Boron (pronounced /'b?r?n/) is the chemical element with atomic number 5 and the chemical symbol B. Boron is a trivalent metalloid element which occurs abundantly in the evaporite ores borax and ulexite. Several allotropes of boron exist amorphous boron is a brown powder; whereas crystalline boron is black, extremely hard (about 9.5 on Mohs' scale), and a poor conductor at room temperature. Elemental boron is used as a dopant in the semiconductor industry, while boron compounds play important roles as light structural materials, insecticides and preservatives, and reagents for chemical synthesis. Boron is an essential plant nutrient. Whereas lack of boron results in boron deficiency disorder, high soil concentrations of boron may also be toxic to plants. As an ultratrace element, boron is necessary for the optimal health of rats and presumably other mammals, though its physiological role in animals is not yet fully understood. Boron is similar to carbon in its capability to form stable covalently bonded molecular networks. Even nominally disordered (amorphous) boron contains regular boron icosahedra which are, however, bonded randomly to each other without long-range order.[7][8] Crystalline boron is a very hard, black material with a high melting point of above 2000&_160;°C. It exists in four major polymorphs a, ß, ? and T. Whereas a, ß and T phases are based on B12 icosahedra, the ?-phase can be described as a rocksalt-type arrangement of the icosahedra and B2 atomic pairs.[9] It can be produced by compressing other boron phases to 12-20&_160;GPa and heating to 1500-1800&_160;°C; it remains stable after releasing the temperature and pressure. The T phase is produced at similar pressures, but higher temperatures of 1800-2200&_160;°C. As to the a and ß phases, they might both coexist at ambient conditions with the ß phase being more stable.[10][9] Compressing boron above 160&_160;GPa produces a boron phase with an as yet unknown structure, and this phase is a superconductor at temperatures 6-12 K.[11]
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Showing 1 to 17 of 17 Articles matching 'Boron' in related articles. |
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1. Brackish Water Reverse Osmosis | Case Studies
September 24, 2009
In May 2009, Pure Aqua supplied 818m3/day Industrial Sea Water and Brackish Water Reverse Osmosis Units to the Ministry of Defense in Oman for Boron Removal. The ocmplete SWRO and BWRO Units were completed with advanced PLC, colored touch panel screen, coagulation and precholorination.
Description:
Case Studies - 2
Ministry of Defense, Oman 2 Pass Industrial Sea Water and Brackish Water Reverse Osmosis Units for Boron Removal
Introduction In May 2009, Pure Aqua supplied 818m3/day Industrial Sea Water and Brackish Water Reverse Osmosis Units to the Ministry of Defense i... (read more)
Author: Larry Price
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2. How Do Plants Get Nutrients in the Soil in a Biological Farming System?
July 31, 2009
Plants take up nutrient elements from the soil through their roots. Plants need nitrogen, phosphorus and potassium in large amounts; very often, these elements are not available in adequate quantities in the soil. Other essential nutrients such as boron, calcium, copper, iron, magnesium, manganese, sulphur, zinc and others are needed in smaller or trace amounts, and these are often adequately available. If nutrient elements, along with water, are not available in adequate quantities at the time the plant needs them, growth and development will be affected adversely.
Biological farming sys... (read more)
Author: Helen Disler
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3. Neodymium Magnets: Their Manufacturing Techniques, Processes and Applications
July 07, 2009
Neodymium magnets are rare types of magnets found on earth. They are considered permanent and are made out of a combination of alloys of iron, boron and neodymium. The mixture of these three alloys provides two more names for which the magnets are called ? the NIB magnet or the NdFeB magnet. Nd is the chemical symbol for neodymium, Fe is for Iron while B is for boron. Now, these magnets are also considered the strongest of all permanent magnets.
In order to appreciate more about this industrial product, it pays to take a look at the manufacturing techniques and how it is produced. Fu... (read more)
Author: Richard Milton
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4. THE AGM BATTERY - A PRUDENT CHOICE
May 26, 2009
Besides the AGM, the Wet Cell or flooded Battery and the Gel Cell are two more variants of the lead-acid battery. The AGM battery is said to encompass the advantages of both, the flooded and the Gel Cell, with minimal disadvantages. The AGM battery is a variant of Sealed VRLA batteries in which the electrolyte is absorbed into a mat of fine glass fibers. Non-hazardous and cost effective The AGM battery uses fine fiber Boron-Silicate glass mat in-between its plates. A newer type of sealed battery, the AGM is capable of handling high levels of usage-abuse. It is also sometimes referred to as a... (read more)
Author: jose peralta
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5. How Much Boron Should One Take For Prostate Cancer?
May 08, 2009
Boron is one of the minerals that have been known to medicine for hundreds of years; lately it has been discovered that boron can slow down the prostate cancer and reduce the possibilities of it for men. The problem with boron is that it is highly toxic when in high doses, that is why many people avoid it. The question is though: how much boron should one take for prostate cancer?The mainstream medical path focuses mostly on drugs and surgical procedures as a means of therapy for prostate cancer. Boron is not included in many supplements and is not given to sick people, or to those who have hi... (read more)
Author: Evano Walraven
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6. How To Clean Using Grapefruit Juices
April 16, 2009
Borax In type, boron combines to form boric acid and inert salts called borates and does not subsist by itself. Borax is a form of hydrous sodium borate that occurs in and regions, forming from the evaporation of salt lakes. It is also synthesised as a by-significance of borate deposit mining. It is naturally colourless, sallow, or light grey. Naturally stirring borax is translucent due to water in its form, but develops a white powder on its outward as the water evaporates.
Borax has many uses in the current world, both at home and in business. In the home borax is worn as a laundry det... (read more)
Author: Judy Sommer
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7. Superiority of Interceptor SAPI
March 01, 2009
The Interceptor Body Armor uses SAPI inserts at the front and the back of the vest for protection against the NATO 7.62x51 mm rifle shots. The SAPI plates are the most technically advance Body Armor plates ever used by the US army and are made of boron carbide ceramic and have a backing of Dyneema which effectively breaks down the velocity of any projectile and protects the wearer. Each of the SAPI plates has the capacity to take care of three NATO 7.62x51 mm bullets.
The Interceptor Body Armor weighs approximately 16.4 pounds, with the plain vest weighing 8.4 pounds and each of the two p... (read more)
Author: Robert Bell
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8. Do You Know About Green Tea Pills And Weight Loss?
February 03, 2009
There have been many scientific studies concerning green tea pills and weight loss. There have been similar studies concerning resveratrol, the mineral chromium, gingko biloba extract, bitter orange extract, the amino acid methionine and the mineral boron. If you are reading this, then you are probably overweight or you know someone that is. Here’s some information that can help anyone achieve their health goals, relatively easily.
Make Small Changes, Set Small Goals It’s much easier to make small changes than it is to completely revamp the way that you eat and live. Try adding a se... (read more)
Author: Gordon Hall
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9. Tourmaline and Its Parade of Colors
January 09, 2009
How many stones can say that they exhibit every color of the imagination? Just one and that is the versatile multi-colored tourmaline gemstone.
What is this stone of many colors?
It has the unique composition of aluminum boron silicate and mixed crystals. No two stones are alike and finding one with a single color is rare. Most are multi-colored and have pleochroismatic properties as well. This means that by changing the angle of the stone and the direction of the light the colors or shades change.
Each color has its own name and they range from colorless to black. Here are s... (read more)
Author: Andrew Stratton
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10. Bamboo Flooring
November 21, 2008
Create an instant oasis with Interlocking Deck Tiles. This incredibly strong bamboo surface installs easily - no hardware, glue or nails required.
Just snap the tiles together and you have a beautiful and unique surface in minutes. The wonderful character and amazing strength of these tiles add warmth and a long-lasting durability.
Bamboo decking tiles are great for nearly any application - indoor or outdoor. Our unique pressure treatment technique infuses the bamboo with a non-toxic boron additive that permanently prevents termites, powder post beetle and man... (read more)
Author: CJ Morris
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11. Effective Control of Mites With Dust Mite Spray
November 06, 2008
Everyone has dust mites in their beds, which can trigger allergic reactions because of the droppings these tiny insects leave behind. These insects are so tiny that you cannot see them with the naked eye. They do not bite and do not cause any diseases on their own. They thrive in the warm humid environment that a bed mattress provides as well as in carpeting, stuffed toys and in the cushions of the sofa. You can control the dust mite population in your home with regular cleaning and by using dust mite spray.
This product contains boron, which has proven effective in the control of insec... (read more)
Author: Ling Tong
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12. Mineral Cosmetics and their ingredients: Part one
November 03, 2008
Mineral cosmetics companies are popping up on the Internet everyday with ingredients that are questionable as even being a pure mineral. Take bismuth oxychloride, while being in the mineral realm. Its a heavy metal and necessitates the constant buffing mineral makeup companies advise to force it into the skin and pores to keep it from sliding off your face. Over buffing of minerals can cause irritation and continuing inflammation on sensitive skin types. Further, it can make acne cystic by congesting pores and cause rosacea to flare. It is a by-product of lead and copper refining.
Bismu... (read more)
Author: Serjame James Bayliss
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13. Chinese rebar export price decrease
July 30, 2008
It is reported that Chinese domestic construction steel market is quiet this week and export prices have seen evident decrease.
Taking Shanghai price for HRB335 20mm rebar as benchmark, the strength to initiate another round of increase will not disappear as long as it is above CNY 4900 per tonne. But the downward correction is expected to sustain for another 2 to 3 weeks.
Export offers for rebar have dropped by about USD 30 per tonne to USD 40 per tonne to USD 1040 per tonne to USD 1050 per tonne FOB and those with boron is about USD 980 per tonne FOB. Offers for BS grade rebar to M... (read more)
Author: draeger xia
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14. 17 Reasons Why Men Should Keep Low Body Fat
September 15, 2007
Men around the world are just as self conscious about their body image as women. However, keeping low body fat is not just for looks, it is also important for health. Here are the 17 reasons why men need to keep low body fat:
1) As you age your metabolism slows down drastically. This ultimately causes your body to burn less fat.
2) Without exercising regularly, the average person will lose about a pound of muscle each year.
3) After the age of 30, the average person in America gains about one pound per year without exercise.
4) Two out of five people do not exercise at al... (read more)
Author: Donald Mckenzie JR
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15. Minerals - Good For Your Bones, Organs and Tissue
March 28, 2006
Minerals are as important as vitamins when it comes to overall health and well-being. Since all enzymatic activities in the body require minerals, your body wouldn't be able to use vitamins and other nutrients without them. Calcium, Magnesium, Chromium, Iron, Selenium and Zinc are just a few of the numerous minerals essential to continued health.
For years the supplement market has been dominated by vitamins, but vitamins and amino acids are useless without minerals because all enzyme activities involve minerals. Minerals for healthy bones, organs, and tissue minerals are needed to main... (read more)
Author: chester ku-lea
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16. Two Little Supplements You Can Add to your diet Right Now
March 01, 2006
In today's polluted society is very taxing on the body. While the body benefits exceptionally from fruit and vegetables, to cope with all the chemicals around us the body needs specific supplements.
Most supplements turn into very expensive urine. This is a very important point. Carbon dioxide, exhaust fumes, putrid invisible gases and boron (a chemical that leaks into buildings from bricks) poison our bodies on a daily basis. We need extra support to counter this.
Want to know how to counteract all the wastes the body has to take in? Chlorophyll is the substance that causes the gree... (read more)
Author: Dr Edward Steiner
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17. Cancer Diet - Minerals
November 19, 2005
A cancer diet needs a good balance of minerals because minerals are needed by all cells for proper function. Patients are often found to be mineral deficient, so this is an area of the diet that needs particular attention.
There are two classes of minerals. Macrominerals, such as the well known calcium, magnesium, sodium, potassium and phosphorus, and microminerals, such as boron, chromium, copper, iron, iodine, germanium, sulfur, silicon, vanadium, zinc, manganese and molybdenum.
The good news is we will get most of the minerals we need, provided we are eating a diet based on a ... (read more)
Author: Marilyn Bennett
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