Oxygen comes in portable, lightweight units that are easy to carry around the house with you. Ask your doctor for a prescription for an oxygen tank. They will do some lung function tests and prescribe you the appropriate amount of oxygen. Place the small clear nosepiece (nasal cannula) inside your nostrils to get oxygen straight from the tank. Oxygen therapy at home should be used with caution, especially when treating Chronic Obstructive Pulmonary Disease (COPD). Always follow instructions given by your physician. Always follow safety precautions when using oxygen: Do not smoke, apply heat, or have any sort of fire near your oxygen containers. Depending on your symptoms and your doctor's recommendations, you can use oxygen all the time or only while you're exercising or sleeping. Oxygen intake should be carefully monitored at all times when the tank is being used. Medical equipment is only appropriate for people with specific illnesses. Consult your doctor to see if these options are right for you. If you only need high-flow oxygen while you're at home, get gas or liquid oxygen delivered from a reputable provider. Ask your doctor to help your choose a type of oxygen, or contact your health insurance company to ask if they have a preferred provider. Oxygen can come to your home as compressed gas in a tank or cylinder, or as a liquid. Liquid oxygen is more portable, but the tanks do not last as long. Oxygen concentrators plug into an outlet and continuously filter oxygen from your environment, channeling it to you through a face mask or nasal cannula. This is a good option if you need lots of concentrated oxygen while at home due to a chronic illness. Your doctor can suggest a good machine, and a nurse will set it up and show you how to use it.

Summary: Use a portable oxygen tank. Get compressed gas or liquid oxygen for your home. Obtain an oxygen concentrator.

Straight hair can be easy to take care of, but it can also look limp. Fortunately, there are a few extra steps you can take to give it some boost. This section will show you how to blow dry straight hair; it will also give you some tips on how to give it a little volume. Here's what you'll need: Hairdryer Nozzle attachment Round hairbrush Hair clip and hair tie Mousse for thickness (optional) Cream to smooth and soften dry, damaged hair (optional) Hair spray to add volume and set style (optional) Squeeze your hair with the towel. This will help soak up any excess moisture, and help your hair dry faster. Use mousse if you want to add volume to your hair. Use a smoothing hair cream to tame dryness and repair damage. If your hair dryer had a speed setting, use the high one. Dry your hair until it is about 80% dry, then turn off the hairdryer. Be sure to aim the nozzle downwards while blow drying your hair. The nozzle will help direct the air flow, and keep your hair a safe distance from the hairdryer's heat. Gather the upper layers of your hair, just like doing a half-up, half-down ponytail, and secure them with a hair clip. Point the nozzle downward, and run the round brush through your hair while you are blow drying it. You can pull it back into a low ponytail if you want to keep it straight. You can also twist it into a loose bun if you want it to have a slight wave to it. Run the brush through your hair while you are drying it, and point the nozzle downward. If you want to give your hair some extra volume, the point the nozzle upward when you start at the roots. Then, move the brush up and out in a c-shape motion. You can brush it back and let it part naturally. You can also set your own part using the handle of a rattail comb. If you want to have flipped ends, run the round brush through the underside of your hair, and stop when you get to the ends. Blow dry your hair using a medium heat setting first, then dry it using a cold setting to set the style. Here are some tips on how to style your hair: To give the ends of your hair a slight curl, run the round hairbrush through the underside of your hair. Twirl it until the ends of your hair are wrapped around it. Blow dry the ends with a medium setting first, and then a cold setting. The cold air will help set the curl. To make the ends of your hair straight, brush them downwards while blow drying them. Be sure to aim the nozzle downward as well. If your hair tends to get a lot of static or flyways, tame it with some styling cream or mist.

Summary: Gather your supplies. Start by towel-drying your hair. Apply some mousse or styling cream. Put on the nozzle attachment and start blow drying your hair on a medium heat setting. Clip the outer layers of your hair out of the way. Blow dry the bottom layers of your hair. Pull the bottom layer of your hair out of the way once it is dry. Remove the hair clip and blow dry the top layer of your hair. Take out the low ponytail or bun and part your hair. Style your hair, if necessary.

Urea is best applied on a cool day, in weather between 32 to 60 F (0-15.6 C), and with little to no wind. At colder temperatures, the ground is frozen, making it difficult to incorporate the urea into the soil. At higher temperatures, and in windy conditions, the urea is broken down faster than it can soak into the soil. Urease is the enzyme that begins the chemical reaction that turns urea into the nitrates plants need. Applying urea fertilizers before planting leads to high amounts of the urea being lost before it can benefit your plants. Using a fertilizer with a urease inhibitor can slow the chemical reaction, and helps retain urea in the soil. Urea is packaged and sold as small, solid pellets or granules. Broadcast the urea with a fertilizer spreader or sprinkle the pellets by hand evenly across your soil. For most plants, you will want to keep the urea close to the plant's roots, or close to where you will plant the seeds. Before urea is turned into the nitrates your plants need, it first becomes ammonia gas. Because gases can easily escape from the surface of the soil, applying fertilizer when the ground is wet will help to incorporate the urea into the soil before the chemical reaction begins. This way, more of the ammonia is trapped within the soil. The top half inch (1.3 cm) of soil should be wet to keep as much ammonia gas in the soil as possible. You can water the soil yourself, apply the urea before it rains, or apply within 48 hours after the snow on your fields has completely melted. Tilling your fields or garden is a great way to incorporate the urea fertilizer into the soil before any of the ammonia gas can be lost. Harrow, drag, or hoe the field in order to incorporate the urea into the top layer of the soil. Certain varieties of potatoes can handle high levels of nitrogen, while others cannot. Be cautious and treat all potatoes the same way. Avoid giving potato plants large quantities of nitrogen with your urea fertilizer. Urea fertilizers can be applied directly onto potato plants, or in a solution with other fertilizers, as long as the solution is made up of 30% nitrogen or less. Solutions of urea fertilizer that are more than 30% nitrogen should only be applied to fields before potatoes are planted. Urea can be applied directly onto most cereal grains, but never in temperatures above 60 F (15.6 C). When applied in warmer temperatures, the plants will give off an odor of ammonia. Only apply urea to corn indirectly, by spreading the urea onto soil at least 2 inches (5 cm) away from the corn seeds. Direct exposure to urea is toxic to the seeds, and greatly reduces the corn plant's yield.
Summary: Minimize ammonia loss by applying urea on a cool day. Use a urea fertilizer with a urease inhibitor before planting. Spread the urea evenly across the soil. Wet the soil. Till the soil to incorporate the urea. Control the amount of nitrogen you give to potato plants. Fertilize grains with urea on a mild day. Apply urea to corn seeds indirectly.