What's the difference between outskirt and penumbra?

Outskirt


Definition:

  • (n.) A part remote from the center; outer edge; border; -- usually in the plural; as, the outskirts of a town.

Example Sentences:

  • (1) Women on the beat: how to get more female police officers around the world Read more Mortars were, for instance, used on 5 June when Afghan national army soldiers accidentally hit a wedding party on the outskirts of Ghazni, killing eight children.
  • (2) Most Roma don't live in caravans, either; in south-eastern and central Europe they have been settled since the 15 century, often segregated on the outskirts of towns and villages.
  • (3) I’m glad cryonics is legal – we should all have rights over our bodies | Simon Jenkins Read more The world’s three major facilities - two in the US and KrioRus , a Russian centre on the outskirts of Moscow, differ slightly in price and ethos.
  • (4) She [McSally] has got a lot more fire in her belly than Ron does.” Latino community Some 100 miles north, on the outskirts of Tucson, Barber’s middle-of-the road positioning is beginning to alienate an arguably even more crucial voting block.
  • (5) Last month, neighbours watched in silence as her bloodstained body was wheeled out of the front door of the small house she shared with her two daughters on the outskirts of the Honduran capital of Tegucigalpa.
  • (6) The teak-coloured wooden garages will be open for business from Monday for drive-in customers in a country where prostitution has been legal since 1942 on the outskirts of the Swiss city.
  • (7) Facebook Twitter Pinterest A North Korean woman carries her belongings on her head as she walks through green rice paddies on the outskirts of Pyongyang.
  • (8) It is also advancing into Aleppo, reaching the city's eastern outskirts, and in Hasaka, and is battling the Kurdish militias in the north-east.
  • (9) Facebook Twitter Pinterest Sisters play in the mud after rare rain at a town camp on the outskirts of Alice Springs in the Northern Territory.
  • (10) A bomb scare on Wednesday prompted a large security operation to be launched on Thursday to protect the former president as he travelled from his mansion on the outskirts of Islamabad.
  • (11) Nurses bury the body of an Ebola victim on the outskirts of Monrovia.
  • (12) Daniel Sturridge back in England shirt for the first time in 573 days Read more The farcical nature of the situation was reinforced when the plane was able to touch down and, once again, it was held – this time on the outskirts of the airport while a parking spot was found.
  • (13) On the frayed, far south-western outskirts of Bogotá, the largest, poorest and most violent barrio in the Colombian capital stretches into the haze up the mountainside as far as the eye can see.
  • (14) The girl, her two siblings, mother and stepfather shared a rented room in Luque, a town on the outskirts of Asunción.
  • (15) In the image above, Syrian refugee children attend a class at a makeshift school near the Syrian border on the outskirts of Mafraq, Jordan, in August 2015.
  • (16) As midnight approached we set off across the bumpy tarmac roads to the outskirts of Mariupol, and soon came across a parked car by the side of the road that the men found suspicious.
  • (17) The Prestonpans factory was eclipsed by an even greater one – for a time it boasted the world’s highest chimney – that made bleach and sulphuric acid on the outskirts of Glasgow; and it was in Glasgow that some of the earliest cases of acid violence were recorded.
  • (18) The authorities have already dug up at least 38 corpses, many of them badly burned, from another 11 graves on the outskirts of Iguala itself.
  • (19) There are, it is true, vineyards in the outskirts of Vienna and Bordeaux, and even one in the middle of Bel Air in Los Angeles; but the Clos Montmartre is both more central and more incongruous.
  • (20) Deghayes said this month that both he and his youngest brother volunteered for an operation that would take place behind Syrian government lines in the outskirts of Idlib, in Syria’s north-west.

Penumbra


Definition:

  • (n.) An incomplete or partial shadow.
  • (n.) The shadow cast, in an eclipse, where the light is partly, but not wholly, cut off by the intervening body; the space of partial illumination between the umbra, or perfect shadow, on all sides, and the full light.
  • (n.) The part of a picture where the shade imperceptibly blends with the light.

Example Sentences:

  • (1) Our analysis showed that the interpolation errors are proportional to the curvature of the dose distribution and are relatively high in regions on either side of, but not including, the steepest part of the penumbra.
  • (2) Analysis of the penumbra width of cross dose distributions, as a function of field sizes, allowed us to postulate that the dmax shift could be due to the phantom scattered photons, which in turn were generated by the collimator scattered photons.
  • (3) If true, this is the first demonstration of the ischemic penumbra by MR imaging and may reflect our use of Wistar rats, a new image analysis technique, and ultra-high resolution MR imaging.
  • (4) The combination for this applicator of sharp penumbra and low out-of-field dose leads to reduced lung and opposite breast doses.
  • (5) An extracellular acidosis that occurs in the penumbra zone was investigated in vitro as to its role in the formation of cytotoxic cell swelling.
  • (6) The ischemic thresholds for the initial increase in CMRG and the complete depletion of ATP content represent the metabolic equivalent of the penumbra zone and provide a basis for the evaluation of therapeutic procedures for the treatment of stroke.
  • (7) If the entire cross-section is blocked, the point will be in the umbra of the shadow; if only a portion of the light is blocked, the point will be in the penumbra of the shadow.
  • (8) The mechanisms involved in this sequence of events and the role of pH changes in the development of the so-called "ischaemic penumbra" are discussed.
  • (9) In the light of these findings, we suggest that use of a selective antagonist of LTs may be helpful in reducing the ischemic penumbra during acute cerebral ischemia by controlling the vasogenic edema.
  • (10) Opening the hinge adjustment restores field flatness, without changing penumbra or the inverse square law behavior of the teletherapy unit.
  • (11) The area of "penumbra" could be estimated in regions with CBF value just above this threshold.
  • (12) In the penumbra zone, comparable trends were noted in OER and CMRO2 but the difference in the changes between the two groups did not reach statistical significance.
  • (13) The agreement is within experimental errors both in the penumbra region and along the central ray of the asymmetric field.
  • (14) These results confirm the concept of a metabolic penumbra.
  • (15) These wedges were designed to increase the penumbra width at the field junction from about 1.5 to about 3.5 cm, to achieve dose uniformity.
  • (16) These studies suggest that 1) the expression of 72-kd heat-shock protein in neurons precedes the development of ischemic cellular alterations detectable by conventional hematoxylin and eosin light microscopy methods; 2) there is a hierarchy of cell types and anatomic sites that express 72-kd heat-shock protein, and this hierarchy reflects cellular and anatomic vulnerability to ischemic cell damage; and 3) 72-kd heat-shock protein induction in neurons bordering a necrotic ischemic core may be the morphological equivalent of the ischemic penumbra.
  • (17) While within the penumbra, some direct sunlight falls on the Moon but little darkening of the disc will be noticed until a few minutes before the Moon begins to enter the umbra at 19:23.
  • (18) Measurements with the diode interfaced to an X-Y recorder required only a fraction of the time required with the chambers, minimizing error due to change in machine output, and permitted resolution of isodose lines in the penumbra.
  • (19) A typical spot has a central dark umbra, surrounded by a lighter penumbra.
  • (20) The rate in the penumbra differed (P = .01) from that in the predicted low-dose region, where scotoma did not increase with time.