INPUT ARTICLE: Article: The color of teak wood varies depending on what species a tree is and what part of the tree the wood is from. Color ranges from dark golden-brown to yellowish-white. Knowing what type of teak you're looking for is important when examining color. The outer layer of the tree is called sapwood and is yellowish-white in color. This wood has a higher moisture content and is therefore weaker than heartwood. The core of the tree is called heartwood and ranges from golden brown to darker brown. This wood is harder, stronger, more expensive, and generally more desirable than sapwood. Some teak dealers or stores may stain the wood, therefore masking its true color. Make sure to ask if the wood you're interested in has any stains on it. If it does, you'll need to identify the wood in a different way. Since teak wood gets darker with age, you should also ask about the age of the wood so you can make sure you get the type of wood you want. The grain of true teak wood is generally straight. It will look like straight streaks or lines of a darker color than the rest of the wood. If the wood grain doesn't look straight or at least mostly straight, you'll want to ask some questions. Depending on how the wood was cut, the grain could also be slightly wavy.

SUMMARY: Look for dark golden-brown to yellowish-white wood. Ask if the wood is stained. Look for a straight grain.

INPUT ARTICLE: Article: Bond energy is defined by the sum of all of the bonds broken minus the sum of all of the bonds formed: H = H(bonds broken) - H(bonds formed). H is the change in bond energy, also referred to as the bond enthalpy and H is the sum of the bond energies for each side of the equation. This equation is a form of Hess's Law. The unit for bond energy is kilojoules per mol or kJ/mol. When given a reaction equation simply written with chemical symbols and numbers, it is helpful to draw this equation out, illustrating all of the bonds formed between the various elements and molecules. This visual representation will allow you to easily count all of the bonds that break and form on the reactant and product sides of the equation. Remember, the left side of the equation is all of the reactants and the right side is all of the products. Single, double, and triple bonds have different bond energies, so be sure to draw your diagram with the correct bonds between elements. For example, if you were to draw out the following equation for a reaction between 2 hydrogen and 2 bromine: H2(g) + Br2(g) ---> 2 HBr(g), you would get: H-H + Br-Br ---> 2 H-Br. The hyphens represent single bonds between the elements in the reactants and the products. In most cases, the bond energies you will be using for these calculations will be averages. The same bond can have a slightly different bond energy based on the molecule it is formed in; therefore, average bond energies are generally used.. A single, double, and triple bond are all treated as 1 break. They all have different bond energies, but count as only a single break. The same is true for the formation of a single, double, or triple bond. It will be counted as single formation. For our example, all of the bonds are single bonds. The left side contains the reactants. These will represent all of the broken bonds in the equation. This is an endothermic process that requires the absorption of energy to break the bonds. For our example, the left side has 1 H-H bond and 1 Br-Br bond. The right side contains all of the products. These are all of the bonds that will be formed. This is an exothermic process that releases energy, usually in the form of heat. For our example, the right side has 2 H-Br bonds.

SUMMARY: Define the equation for calculating bond energy. Draw the chemical equation showing all of the bonds between molecules. Know the rules for counting broken and formed bonds. Identify the bonds broken on the left side of the equation. Count the bonds formed on the right side of the equation.

INPUT ARTICLE: Article: The warm, dry days and cool, relatively humid nights of the late summer and early fall provide the perfect conditions for drying tobacco leaves. Tobacco leaves that are too green will dry green, which you want to avoid. Typically the lower leaves on the plant will turn yellow sooner, so take those first for drying. The leaves need to be protected from direct sunlight, rain, and wind for drying. A barn, shed, or garage would work well for this. You could even dry the leaves in your home, as long as you have the space -- just be sure the air isn't too dry. Find a shelter where you'll have some control over the humidity by opening or closing doors, windows, or vents. You'll need to keep the humidity relatively high to keep the leaves from drying too quickly. Be sure the leaves are protected from direct sunlight, which may burn them. Fasten the leaves to a clothesline or rope, bunched together at the stem and tied with a strong rubber band that will contract as the leaves shrink. If you're only drying a few leaves, another method is to thread individual stems and hang the leaves from a string.

SUMMARY: Dry tobacco in the fall for the best results. Pick leaves that are a pale-yellow for drying. Find a well-ventilated shelter for drying, typically a barn or shed. Hang your tobacco in bunches of 3 to 5 leaves.

INPUT ARTICLE: Article: After your doctor prescribes Symbicort, request that they get out an inhaler and show you how to use it. Ask them to repeat the process until you feel very comfortable with it. Take brief notes on your phone or a notepad, if needed. It generally works best if you use your inhaler for 2 puffs in the morning and for 2 puffs in the evening. Do your best to use your inhaler at the same time every day in order to establish a routine. The medication dispensed by the Symbicort inhaler is not meant to treat your mouth. It's important that you fill your mouth with clean water, swish it around, and spit it all out after you use your inhaler. Taking this precaution will make it less likely that you'll contract thrush or another mouth infection. If you've missed a dose of Symbicort, don't try to make it up. Instead, just wait until your next dosing session and proceed as usual. Taking more than a single dose at a time can cause additional side effects or even lead to overdosing. If you find yourself consistently missing doses, you might consider creating an alarm or reminder on your phone. Maintaining your Symbicort inhaler is actually pretty straightforward. Keep it in a safe, cool, clean place. On the same day each week, take your inhaler out and go over it gently with a dry cloth. Do not wipe it down with water or any cleaning chemicals. " At the top of your Symbicort inhaler there is a small counter that shows how many doses of medication you have left. After each puff, the counter will go down by 1. When you get to a lower number, the counter will also show a yellow indicator. This means that you need to refill your prescription. When the counter shows "0" and is red, the inhaler is out of medication and needs to be replaced. When the counter shows red and "0" your inhaler may feel the same to the touch and may still provide a puff of air. But, it no longer will send medication along with that air to treat you. Symbicort inhalers can contribute to colds, sore throats, stuffy noses, and sinus inflammation. Some people also experience bronchial (throat) spasms after using Symbicort. It's also important to talk with your doctor about any other medications that you are taking, as these might interfere or interact with Symbicort. For example, some thyroid medications can lose effectiveness when paired with Symbicort.

SUMMARY:
Ask your doctor to demonstrate proper dosing practices. Use your inhaler 2 times per day. Rinse your mouth out with clean water after each use. Do not double-dose if you've missed one. Wipe the inhaler down weekly with a clean cloth. Replace the inhaler when the counter shows "0. Talk to your doctor about possible side effects or drug interactions.