In situ

in-situsituin placein sitin situ measurementsin situ'' languageIn situ:in-placein-sutu upgradingon-site
In situ (often not italicized in English) is a Latin phrase that translates literally to "on site" or "in position." It can mean "locally", "on site", "on the premises", or "in place" to describe where an event takes place and is used in many different contexts.wikipedia
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In-situ conservation in India

in-situ conservationin situin situ conservation
In conservation of genetic resources, "in situ conservation" (also "on-site conservation") is the process of protecting an endangered plant or animal species in its natural habitat, as opposed to ex situ conservation (also "off-site conservation").
In-situ conservation is the on-site conservation or the conservation of genetic resources in natural populations of plant or animal species, such as forest genetic resources in natural populations of Teagan species.

Weathering

weatheredchemical weatheringweather resistant
For example, in situ is used in relation to the distinction between weathering and erosion, the difference being that erosion requires a transport medium (such as wind, ice, or water), whereas weathering occurs in situ.
Weathering occurs in situ (on site), that is, in the same place, with little or no movement, and thus should not be confused with erosion, which involves the movement of rocks and minerals by agents such as water, ice, snow, wind, waves and gravity and then being transported and deposited in other locations.

Provenance

Find spotunprovenanceddata provenance
Consequently, the in situ find site may still not reveal its provenance, but with further detective work may help uncover links that otherwise would remain unknown.
Even when apparently discovered in situ, archaeological finds are treated with caution.

In vitro

in-vitrolaboratoryartificially
This phrase in situ when used in laboratory science such as cell science can mean something intermediate between in vivo and in vitro.

In vivo

in-vivoliving tissueanimal
This phrase in situ when used in laboratory science such as cell science can mean something intermediate between in vivo and in vitro.

In situ resource utilization

in-situ resource utilizationISRUin-situ
Future space exploration or terraforming may rely on obtaining supplies in situ, such as previous plans to power the Orion space vehicle with fuel minable on the moon.
It is now very common for spacecraft and robotic planetary surface mission to harness the solar radiation found in situ in the form of solar panels.

Johnson–Corey–Chaykovsky reaction

Johnson-Corey-Chaykovsky reactionCorey-Chaykovsky reagentCorey–Chaykovsky reagent
Examples of the former include the Corey-Chaykovsky reagent and adrenochrome.
Aggarwal has developed an alternative method employing the same sulfide as above and a novel alkylation involving a rhodium carbenoid formed in situ.

Oil sands

tar sandsoil sandoilsand
There are several varieties of in situ techniques, but the ones which work best in the oil sands use heat (steam).
Although the Athabasca deposit is the only one in the world which has areas shallow enough to mine from the surface, all three Alberta areas are suitable for production using in-situ methods, such as cyclic steam stimulation (CSS) and steam assisted gravity drainage (SAGD).

In silico

in-silicosimulationscomputationally masked
The phrase was coined in 1989 as an allusion to the Latin phrases in vivo, in vitro, and in situ, which are commonly used in biology (see also systems biology) and refer to experiments done in living organisms, outside living organisms, and where they are found in nature, respectively.

Steam-assisted gravity drainage

steam assisted gravity drainageSAGDsteam assisted gravity drainage (SAGD)
The most common type of in situ petroleum production is referred to as SAGD (steam-assisted gravity drainage) this is becoming very popular in the Alberta Oil Sands.
In 1984, AOSTRA initiated the Underground Test Facility in the Athabasca oil sands, located between the MacKay Rivers and the Devon River west of the Syncrude plant as an in-situ SAGD bitumen recovery facility.

Asphalt

bitumenbituminoustarmac
In situ refers to recovery techniques which apply heat or solvents to heavy crude oil or bitumen reservoirs beneath the earth's crust.
The Athabasca oil sands are the largest bitumen deposit in Canada and the only one accessible to surface mining, although recent technological breakthroughs have resulted in deeper deposits becoming producible by in situ methods.

In utero

unborn childuteroCryo Interactive

Latin

Latin languageLat.la
In situ (often not italicized in English) is a Latin phrase that translates literally to "on site" or "in position."

Physics

physicistphysicalphysicists
For example, in fields such as physics, geology, chemistry, or biology, in situ may describe the way a measurement is taken, that is, in the same place the phenomenon is occurring without isolating it from other systems or altering the original conditions of the test.

Geology

geologicalgeologistgeologic
For example, in fields such as physics, geology, chemistry, or biology, in situ may describe the way a measurement is taken, that is, in the same place the phenomenon is occurring without isolating it from other systems or altering the original conditions of the test.

Chemistry

chemistchemicalApplied Chemistry
For example, in fields such as physics, geology, chemistry, or biology, in situ may describe the way a measurement is taken, that is, in the same place the phenomenon is occurring without isolating it from other systems or altering the original conditions of the test.

Biology

biologicalBiological Sciencesbiologist
For example, in fields such as physics, geology, chemistry, or biology, in situ may describe the way a measurement is taken, that is, in the same place the phenomenon is occurring without isolating it from other systems or altering the original conditions of the test.

Aerospace manufacturer

aerospace industryAerospaceaircraft industry
In the aerospace industry, equipment on-board aircraft must be tested in situ, or in place, to confirm everything functions properly as a system.

Archaeology

archaeologistarchaeologicalarchaeologists
In archaeology, in situ refers to an artifact that has not been moved from its original place of deposition.

Tell (archaeology)

tellteltells
For example, in a Tell mound, where layers are not typically uniform or horizontal, or in land cleared or tilled for farming.

Great Sphinx of Giza

Great SphinxSphinxThe Sphinx
The term in situ is often used to describe ancient sculpture that was carved in place such as the Sphinx or Petra.

Petra

Petra, JordanPetra Roman RoadAncient Ruins
The term in situ is often used to describe ancient sculpture that was carved in place such as the Sphinx or Petra.

Colossi of Memnon

a colossal statue in Egyptbegins singingCollosi of Memnon
This distinguishes it from statues that were carved and moved like the Colossi of Memnon, which was moved in ancient times.

Site-specific art

site-specificsite specificsite-specific installations
For a more detailed account see: Site-specific art.