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What causes a woman to have a short cervix?

The average cervical length at 24 weeks of pregnancy is 1.4 inches long. A short cervix measures less than 1 inch, and a very short cervix measures 0.8 inches or less.Treatments for a short cervix include bed rest, progesterone supplements, changing to a diet higher in folic acid and fatty acids, indomethacin treatment and cervical cerclage, which is a minor surgery. No single treatment has been sufficiently proven to stop premature labor in women with this condition, according to research in "Reviews in Obstetrics & Gynecology."

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How large is an acre of land?

An acre is equivalent to 0.4047 hectares or to one six-hundred-fortieth of a square mile. The definition of an acre assumes perfectly flat ground and ignores the presence of any hills. An acre of land with steeply sloped hills actually has a great surface area than an acre of flat ground. This is because in surveying only the horizontal distances between points are considered.

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What kind of volcanoes are there?

Cinder cones are created from a buildup of congealed lava called cinders. The lava is ejected from a single vent and stacks up around a central crater.\nComposite volcanoes form many of the world's mountains. Lava flows, volcanic ash, cinders, blocks and bombs alternate in layers forming steep-sided symmetrical cones. A central vent or cluster of vents emerges at the summit from a crater. Cracks on the flanks of the cone can emit lava and strengthen the cone. Deep reservoirs of lava are tapped by composite volcanoes, giving them their massive size.\nShield volcanoes have a gentle slope du..

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What is a heterogenous appearance of the thyroid gland?

While nodules may be detected in an ultrasound examination or thyroid scan, it does not determine whether the gland is overactive, underactive or normal in function, according to the U.S. National Library of Medicine. An abnormal appearance is not always a serious cause for concern; thyroid cancer accounts for only a small percentage of present thyroid nodules.\nWhile many nodules do not carry any signs or symptoms, others may become increasingly visible, pressing on the windpipe or esophagus to cause shortness of breath or difficulty swallowing. In some cases, thyroid nodules produce addition..

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What does gauge in stainless steel mean?

The gauge number is an important indicator of whether a stainless steel product is prone to denting when subject to pressure. The thickness can also suggest if the product is likely to cause dinging noises when other metallic objects strike its surface.The 16-gauge stainless steel is considered to be the standard in the steel industry. This gauge measures approximately 0.0598 inch in thickness. In terms of stainless steel sinks, the 18-gauge or 20-gauge steel is commonly sold. The 18-gauge steel measures around 0.0478 inch thick, while the 20-gauge steel measures about 0.0359 inch thick.

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What are the different kinds of mint plants?

Spearmint is native to the Mediterranean and was given as a symbol of hospitality and wisdom. The Romans brought the plant to their colonies in Britain, and English colonials brought the plant to North America. Spearmint gets its classically minty aroma from carvone, a volatile oil.\nMints interbreed easily with one another, and many types of mint are actually hybrids of peppermint, even as peppermint is a hybrid of spearmint and watermint. Peppermint has been known since the mid-18th century and has an unmistakable fragrance and taste. It's favored in cooking and is used medicinally. It ..

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What are the functions of the enzyme cellulase?

Cellulase naturally occurs in plant tissues; there, it acts as a reinforcing material. It is thick and viscous in its physical composition, which makes it ideal for adding to foods and beverages to make ingredients combine and congeal and stick together. Cellulase is found in all plants and is quite abundant. In fact, it is the most widespread organic compound and is found in virtually every habitat around the world. Its abundance and ease of acquisition make cellulase an ideal additive to foods and drinks, as it is cheap and easy to extract. Cellulase, as a nutrient, falls into the category o..

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What is the empirical formula for menthol?

Menthol can be either a naturally occurring or synthetically derived compound, and its exact chemical structure can vary. However, the formula for menthol remains the same. To obtain menthol naturally, it can be extracted from mint oils. Menthol is frequently used in such consumer products as topical analgesics, aftershave, smoking tobacco, pesticide and perfumes. Its naturally derived mint flavor also supports its use in oral hygiene products, such as mouthwash, toothpaste and mouth spray.

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What is the pH level of Coke?

In addition to phosphoric acid, Coke products also contain carbonic acid. This forms when carbon dioxide, which makes soft drinks bubbly, reacts in a solution. Bob Peeples, a chemical engineer, says acidic drinks are not dangerous because the stomach already has an acidic environment. The stomach has specialized cells that produce hydrochloric acid, which has a pH of 2.0. This acid is stronger than the phosphoric acid or carbonic acid found in cola products.

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What structures does the dermis contain?

The dermis also contains highly functional components such as hair follicles, nerve endings, sweat and sebaceous glands, and blood vessels, explains WebMD. Nerve endings in the dermis allow for the sense of heat and touch. Some parts of the skin, such as fingertips and toes, contain more nerve endings, causing them to be more sensitive. Blood vessels within the dermis layer provide nourishment, waste removal and temperature regulation for the skin. Sweat glands produce sweat as a reaction to heat or stress, which sometimes results in body odor. The sebaceous glands produce an oily substance th..

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