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running metre

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Q: What is RM in pipe laying measurement units?
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What is unit of measure Rm used for?

how many meter are there in 450 running meter


What does Rw dB mean in acoustics?

The ability of a material to absorb sound is assessed in the laboratory by taking measurements over a recognized range of frequencies. The average of these measurements is expressed as Rm or the Mean Sound Reduction Index. When adjusted for the ear's response to loudness it is termed Rwor Weighted Reduction Index and is expressed in dB or deciBels. DeciBel is a unit of measurement of the loudness or strength of a signal.


How many songs is 8Mb internal memory on a phone?

well it depends, usually the song is of 5 mb if it's a "mp3" format song, so if you copy "mp3" format song than only 1.5 song you may get or 2 if the songs are less than 5 mb. if you would like to have more song than i prefer "rm" format songs, which occupies less space, its around less than 1 mb per song.


Foreign object - inhaled or swallowed?

DefinitionIf you breathe a foreign object into the respiratory tract, it may become stuck and cause breathing or airway problems, as well as inflammation and infection.If swallowed, a foreign object may become stuck along the gastrointestinal (GI)tract, which can lead to infection or bleeding.See also: ChokingAlternative NamesObstructed airway; Blocked airwayConsiderationsThese events can occur at any age, but are most common in children ages 1 to 3.CausesCertain foods (nuts, seeds, popcorn) and small objects (buttons, beads) are easily inhaled by young children. Such objects may cause either partial or total airway blockage.Coins, small toys, marbles, pins, screws, rocks, and anything else small enough for infants or toddlers to put in their mouths can be swallowed. If the object passes through the esophagus and into the stomach without getting stuck, it will probably pass through the entire GI tract.SymptomsChokingCoughingNo breathing or breathing trouble (respiratory distress)WheezingHowever, in some cases, only minor symptoms are seen at first, and the object may be forgotten until later symptoms (inflammation, infection) develop.First AidFOR INHALED OBJECTAny child who may have inhaled an object should be seen by a doctor. Children with obvious breathing trouble may have a total airway blockage that requires emergency medical attention.If choking or coughing goes away, and the child does not have any other symptoms, he or she should be watched for signs and symptoms of infection or irritation. X-rays may be needed.Bronchoscopy may be necessary to make a definitive diagnosis and to remove the object. Antibiotics and respiratory therapy techniques may be used if infection develops.FOR SWALLOWED OBJECTAny child who is believed to have swallowed a foreign object should be watched for pain, fever, vomiting, or local tenderness. Stools (bowel movements) should be checked to see if the object exited the body. This may sometimes cause rectal or anal bleeding.Even sharp objects (such as pins and screws) usually pass through the GI tract without complications. X-rays are sometimes needed, especially if the child has pain or the object does not pass within 4 to 5 days.Do NotDO NOT "force feed" infants who are crying or breathing rapidly.Call immediately for emergency medical assistance ifCall a health care provider or local emergency number (such as 911) if you think a child has inhaled or swallowed a foreign object.PreventionCut food into appropriate sizes for small children, and teach them how to chew well.Discourage talking, laughing, or playing while food is in the mouth.Do not give potentially dangerous foods such as hot dogs, whole grapes, nuts, popcorn, or hard candy to children under age 3.Keep small objects out of the reach of young children.