Ships, Planes And Other Spots Are Getting A 'Deep Clean.' What's That Mean? Public health officials suggest a few common steps can be used by both. Specialized machines' for deep cleanings to be conducted at night. It can be used for vision screening or autorefraction. Supports AAP screening guidelines for early detection of amblyopic risk factors; Automated vision.

The spot exchange rate is best thought of as how much you would have to pay in one currency to buy another at this moment in time. The spot exchange rate is usually decided through the global where currency traders, institution and countries clear transactions and trades. The forex market is the largest and most liquid market in the world, with trillions of dollars changing hands daily. The most actively traded currencies are the, the —which is used in many continental European countries including Germany, France, and Italy—the British pound, the Japanese yen and the Canadian dollar. On the transaction date, the two parties involved in the transaction agree on the price, which is the number of units of currency A that will be exchanged for currency B. The parties also agree on the value of the transaction in both currencies and the settlement date. If both currencies are to be delivered, the parties also exchange bank information.

Speculators often buy and sell multiple times for the same settlement date, in which case the transactions are netted and only the gain or loss is settled. There are a number of different ways in which traders can execute a spot exchange, especially with the advent of online trading systems. The exchange can be made directly between two parties, eliminating the need for a third party. Electronic broking systems may also be used, where dealers can make their trades through an automated order matching system. Traders can also use electronic trading systems through a single or multi-bank dealing system.

Finally, trades can be made through a voice broker, or over the phone with a foreign exchange broker.

Work closely with your doctor and CPAP supplier to make sure you have a CPAP mask that fits properly. Everyone has different face shapes, so the right style and size mask for someone else may not work for you.Try a different mask. A range of CPAP masks are available. For example, some feature full face masks that cover your mouth and nose, with straps that stretch across your forehead and cheeks. These may make some people feel claustrophobic, but they work well if you prefer to breathe through your mouth during sleep. They also provide a stable fit if you move around a lot in your sleep.

Other masks feature nasal pillows that fit under your nose and straps that cover less of your face. These can feel less cumbersome.Nasal pillows may work well if you wear glasses or read with the mask on, because some don't block your eyes as much as full face masks do.

However, this may not be an option if you move around a lot in your sleep or sleep on your side.Pay attention to size. Most masks come in different sizes. Just because you're a certain size in one mask doesn't mean you'll be the same size in another. CPAP masks are usually adjustable.Ask your doctor or CPAP supplier to show you how to adjust your mask to get the best fit.

Manufacturer product instructions also can help show you how to do this. A properly fitting mask shouldn't be uncomfortable or cause pain. Using a CPAP device can be frustrating as you try to get used to it, but it's important you stick with it. The treatment is essential to avoiding complications of obstructive sleep apnea, such as heart problems and excessive daytime sleepiness.Work with your doctor and CPAP supplier to ensure the best fit and device for you. Regular visits to your sleep doctor are important and can help troubleshoot any problems and adjust settings, if needed.

It can take a while to find the correct settings and get used to the mask. Choosing a mask. American Sleep Apnea Association. Accessed Aug. 26, 2011. What are the risks of CPAP?

National Heart, Lung, and Blood Institute. Accessed Aug. 26, 2011.

Desai T, et al. Positive airway pressure treatment of adult patients with obstructive sleep apnea.

Sleep Medicine Clinics. 2010;5:347. When things go wrong with PAP. American Sleep Apnea Association. Accessed Aug. 26, 2011. Your guide to healthy sleep.

National Heart, Lung, and Blood Institute. Accessed Sept. Lego chess.