the iud with progestogen is a type of long-acting reversible birth control. it works by thickening the mucus at the opening of the cervix, stopping the buildup of the lining of the uterus, and occasionally preventing ovulation. the iud with levonorgestrel was first approved for medical use in 1990 in finland and in the united states in 2000.
helicobacter pylori is a helix-shaped classified as a curved rod, not spirochaete gram-negative bacterium about 3 μm long with a diameter of about 0.5μm. h. pylori can be demonstrated in tissue by gram stain, giemsa stain, haematoxylin–eosin stain, warthin–starry silver stain, acridine orange stain, and phase-contrast microscopy.
hierarchy is an important concept in a wide variety of fields, such as philosophy, mathematics, computer science, organizational theory, systems theory, and the social sciences especially political philosophy . a hierarchy can link entities either directly or indirectly, and either vertically or diagonally. the only direct links in a hierarchy .
a pine is any conifer in the genus pinus / ˈ p iː n uː s / of the family pinaceae. pinus is the sole genus in the subfamily pinoideae.the plant list compiled by the royal botanic gardens, kew and missouri botanical garden accepts 126 species names of pines as current, together with 35 unresolved species and many more synonyms.
pumpable ice technology is a technology to produce and use fluids or secondary refrigerants, also called coolants, with the viscosity of water or jelly and the cooling capacity of ice. pumpable ice is typically a slurry of ice crystals or particles ranging from 5 micrometers to 1 cm in diameter and transported in brine, seawater, food liquid, or gas bubbles of air, ozone, or carbon dioxide. pumpable ice passed through plastic tubes
helicobacter pylori, previously known as campylobacter pylori, is a gram-negative, helically-shaped, microaerophilic bacterium usually found in the stomach. its helical shape from which the genus name, helicobacter, derives is thought to have evolved in order to penetrate the mucoid lining of the stomach and thereby establish infection.
a marine chronometer is a timepiece that is precise and accurate enough to be used as a portable time standard; it can therefore be used to determine longitude by means of accurately measuring the time of a known fixed location, for example greenwich mean time gmt and the time at the current location. when first developed in the 18th century, it was a major technical achievement, as accurate .
the particles pass over the screen while the water passes through the apertures in the screen. this process is only viable for coarse ores that have a close size distribution as the apertures can allow small particles to pass through. sedimentation operates by passing water into a large thickener or clarifier.
in mathematics, a fractal is a subset of a euclidean space for which the hausdorff dimension strictly exceeds the topological dimension. fractals tend to appear nearly the same at different levels, as is illustrated here in the successively small magnifications of the mandelbrot set; because of this, fractals are encountered ubiquitously in nature. fractals exhibit similar patterns at increasingly small scales called self similarity, also known as expanding symmetry or unfolding symmetry; if thi
types of machines. spinning tube, commonly called spiral ct, or helical ct is an imaging technique in which an entire x-ray tube is spun around the central axis of the area being scanned. these are the dominant type of scanners on the market because they have been manufactured longer and offer a lower cost of production and purchase.
basal-cell carcinoma bcc , also known as basal-cell cancer, is the most common type of skin cancer. it often appears as a painless raised area of skin, which may be shiny with small blood vessels running over it. it may also present as a raised area with ulceration. basal-cell cancer grows slowly and can damage the tissue around it, but it is unlikely to spread to distant areas or result in .
pulmonary contusion is the most common injury found in blunt chest trauma, occurring in 25–35% of cases. it is usually caused by the rapid deceleration that results when the moving chest strikes a fixed object. about 70% of cases result from motor vehicle collisions, most often when the chest strikes the inside of the car. falls, assaults, and sports injuries are other causes.
a pulmonary contusion, also known as lung contusion, is a bruise of the lung, caused by chest trauma. as a result of damage to capillaries, blood and other fluids accumulate in the lung tissue. the excess fluid interferes with gas exchange, potentially leading to inadequate oxygen levels .
terminology c. 130 here are some items of economics terminology that are probably in the project's scope and should in all likelihood be tagged.
left-sided mesothelioma seen on the right of the picture : chest ct. all types of asbestos fibers are known to cause serious health hazards in humans. amosite and crocidolite are considered the most hazardous asbestos fiber types; however, chrysotile asbestos has also produced tumors in animals and is a recognized cause of asbestosis and malignant mesothelioma in humans, and mesothelioma has .