デブリ、壊死組織片、細片、残骸

関: cell debris

WordNet

the remains of something that has been destroyed or broken up (同)dust, junk, rubble, detritus
the sudden spread of dust and debris from a collapsing building; "the destruction of the building produced an enormous debris surge" (同)debris storm

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(壊れた物の)破片,残骸

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2012/10/30 18:47:01」(JST)

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For other uses, see Debris (disambiguation).

Debris /dɨˈbriː/ is rubble, wreckage, ruins, litter and discarded garbage/refuse/trash, scattered remains of something destroyed, or, in geology, large rock fragments left by a melting glacier etc. The singular form of debris is debris. Depending on context, debris can refer to a number of different things.

Geological

Obsidian debris (talus), Obsidian Dome, California.

In geology, debris usually applies to the remains of geological activity including landslides, volcanic explosions, avalanches, mudflows or Glacial lake outburst floods (Jökulhlaups) and moraine, lahars, and lava eruptions. Geological debris sometimes moves in a stream called a debris flow.

In forests, coarse woody debris (CWD or CWH) refers to dead trees, left standing or fallen, and the remains of branches on the ground.

In streams and rivers, large woody debris (LWD) are the logs, sticks, branches, and other wood.

In mining, debris called attle usually consists of rock fragments which contain little or no ore.

Marine

Main article: marine debris

Marine debris washed ashore on Hawaii

Marine debris applies to floating garbage such as bottles, cans, styrofoam, cruise ship waste, offshore oil and gas exploration and production facilities pollution, and fishing paraphernalia from professional and recreational boaters. Marine debris is also called litter or flotsam and jetsam. Objects that can constitute marine debris include used automobile tires, detergent bottles, medical wastes, discarded fishing line and nets, soda cans, and bilge waste solids.

In addition to being unsightly, it can pose a serious threat to marine life, boats, swimmers, divers, and others. For example, each year millions of seabirds, sea turtles, fish, and marine mammals become entangled in marine debris, or ingest plastics which they have mistaken for food. As many as 30,000 northern fur seals per year get caught in abandoned fishing nets and either drown or suffocate. Whales mistake plastic bags for squid, and birds may mistake plastic pellets for fish eggs. At other times, animals accidentally eat the plastic while feeding on natural food.

The largest concentration of marine debris is the Great Pacific Garbage Patch.

Marine debris most commonly originates from land-based sources. Various international agencies are currently working to reduce marine debris levels around the world.

Meteorological

In meteorology, debris usually applies to the remains of human habitation and natural flora after storm related destruction. This debris is also commonly referred to as storm debris. Storm debris commonly consists of roofing material, downed tree limbs, downed signs, downed power lines and poles, and wind-blown garbage. Storm debris can become a serious problem immediately after a storm, in that it often blocks access to individuals and communities that may require emergency services. This material frequently exists in such large quantities that disposing of it becomes a serious issue for a community. In addition, storm debris is often hazardous by its very nature, since, for example, downed power lines annually account for storm-related deaths.

Space

Main article: space debris

Space debris usually refers to the remains of spacecraft that have either fallen to Earth or are still orbiting Earth. Space debris may also consist of natural components such as chunks of rock and ice. The problem of space debris has grown as various space programs have left legacies of launches, explosions, repairs, and discards in both low Earth orbit and more remote orbits. These orbiting fragments have reached a great enough proportion as to constitute a hazard to future space launches of both satellite and manned vehicles. Various government agencies and international organizations are beginning to track space debris and also research possible solutions to the problem. While many of these debris items, ranging in size from nuts and bolts to entire satellites and spacecraft, may fall to Earth, other items located in more remote orbits may stay aloft for centuries. The velocity of some of these pieces of space junk have been clocked in excess of 17,000 miles per hour. A piece of space debris falling to Earth leaves a fiery trail, just like a meteor.

A debris disk is a circumstellar disk of dust and debris in orbit around a star.

Surgical

In medicine, debri usually refers to biological matter that has accumulated or lodged in surgical instruments and is referred to as surgical debris. The presence of surgical debris can result in cross-infections or nosocomial infections if not removed and the affected surgical instruments or equipment properly disinfected.

War

A child plays on an abandoned tank outside Phnom Penh, Cambodia in 1991.

In the aftermath of a war, large areas of the region of conflict are often strewn with war debris in the form of abandoned or destroyed hardware and vehicles, mines, unexploded ordnance, bullet casings and other fragments of metal.

Much war debris has the potential to be lethal and continues to kill and maim civilian populations for years after the end of a conflict. The risks from war debris may be sufficiently high to prevent or delay the return of refugees. In addition war debris may contain hazardous chemicals or radioactive components that can contaminate the land or poison civilians who come into contact with it. Many Mine clearance agencies are also involved in the clearance of war debris.

Land mines in particular are very dangerous as they can remain active for decades after a conflict, which is why they have been banned by international war regulations.

In November 2006 the Protocol on Explosive Remnants of War^[1] came into effect with 92 countries subscribing to the treaty that requires the parties involved in a conflict to assist with the removal of unexploded ordnance following the end of hostilities.^[2]

Some of the countries most affected by war debris are Afghanistan, Angola, Cambodia, Iraq and Laos.

Similarly military debris may be found in and around firing ranges and military training areas.

Debris can also be used as cover for military purposes, depending on the situation.

Culinary

In South Louisiana's Creole and Cajun cultures, debris (pronounced "DAY-bree") refers to chopped roast beef. New Orleans tourists are often taken aback to hear a customer in a diner order a "debris po-boy"—that is, a submarine sandwich made of shredded beef.^[3]

References

^ "Protocol on Explosive Remnants of War (Protocol V to the 1980 Convention)". International Committee of the Red Cross. 2003. http://www.icrc.org/IHL.nsf/FULL/610?OpenDocument. Retrieved 2006-06-20.
^ "War Debris Treaty To Come Into Force in November". Defense News. 2006. http://www.defensenews.com/story.php?F=1803977&C=mideast. Retrieved 2006-06-20.
^ http://www.nolacuisine.com/2005/10/25/roast-beef-po-boy-debris-gravy/

External links

Look up debris or attle in Wiktionary, the free dictionary.

United States Geological Survey: Debris Flows, Mudflows, Jökulhlaups, and Lahars

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English Journal

Chemical characterization and ecotoxicity of three soil foaming agents used in mechanized tunneling.

Baderna D1, Lomazzi E2, Passoni A3, Pogliaghi A2, Petoumenou MI2, Bagnati R3, Lodi M2, Viarengo A4, Sforzini S4, Benfenati E2, Fanelli R5.
Journal of hazardous materials.J Hazard Mater.2015 Oct 15;296:210-20. doi: 10.1016/j.jhazmat.2015.04.040. Epub 2015 Apr 18.
The construction of tunnels and rocks with mechanized drills produces several tons of rocky debris that are today recycled as construction material or as soil replacement for covering rocky areas. The lack of accurate information about the environmental impact of these excavated rocks and foaming ag
PMID 25917697

Enhancement of nitrate removal at the sediment-water interface by carbon addition plus vertical mixing.

Chen X1, He S2, Zhang Y3, Huang X2, Huang Y2, Chen D2, Huang X3, Tang J4.
Chemosphere.Chemosphere.2015 Oct;136:305-10. doi: 10.1016/j.chemosphere.2014.12.010. Epub 2014 Dec 30.
Wetlands and ponds are frequently used to remove nitrate from effluents or runoffs. However, the efficiency of this approach is limited. Based on the assumption that introducing vertical mixing to water column plus carbon addition would benefit the diffusion across the sediment-water interface, we c
PMID 25556005

Age-related macular degeneration and the role of the complement system.

McHarg S1, Clark SJ1, Day AJ2, Bishop PN3.
Molecular immunology.Mol Immunol.2015 Sep;67(1):43-50. doi: 10.1016/j.molimm.2015.02.032. Epub 2015 Mar 21.
Age-related macular degeneration (AMD) is a leading cause of visual impairment. It is characterised by damage to a tissue complex composed of the retinal pigment epithelium, Bruch's membrane and choriocapillaris. In early AMD extracellular debris including drusen accumulates in Bruch's membrane and
PMID 25804937

Application of an HS-MS for the detection of ignitable liquids from fire debris.

Ferreiro-González M1, Ayuso J2, Álvarez JA2, Palma M3, Barroso CG4.
Talanta.Talanta.2015 Sep 1;142:150-6. doi: 10.1016/j.talanta.2015.04.030. Epub 2015 Apr 21.
In arson attacks, accelerants such as ignitable liquids are commonly used to initiate or accelerate a fire. The detection of ignitable liquid residues at fire scenes is therefore a key step in fire investigations. The most widely used analytical technique for the analysis of accelerants is GC-MS. Ho
PMID 26003705

Japanese Journal

The genesis of phosphatic and carbonate rocks in the Toyoma Formation, Northeastern Japan

MORIKIYO Toshiro,MATSUNAGA Kinuko,IWAMASA Kazuo,KANISAWA Satoshi,MORISHITA Yuichi
Journal of the Faculty of Science Shinshu University 44, 1-57, 2012-01-30
… Zone 1 is the region of oxic surface sediment in which sulfur-oxidizing bacteria grew.Because sulfuric acid is generated by the chemosynthesis of the bacteria, biogenic phosphate debris such as fish bones and scales were dissolved.The phosphate ions thus formed were the source of the phosphatic rocks of the Toyoma Formation.Zone 2 is the anoxic zone that underlay Zone 1. …
NAID 120003752296

磐梯火山最初期噴出物におけるマグマ組成の時間変化 : 裏磐梯高原コアの化学分析結果

山元孝広
火山 56(6), 189-200, 2011-12-31
… 72.8 to 20.3m in depth) and the 1888 debris avalanche deposit (20.3 to 3.5m in depth), in ascending order. … UBL is made up of andesite to dacite pyroclastic flow and debris flow deposits, showing a distal volcanic fan facies. …
NAID 110008898448

Physical and chemical effects of ingested plastic debris on short-tailed shearwaters, Puffinus tenuirostris, in the North Pacific Ocean

Yamashita Rei,Takada Hideshige,Fukuwaka Masa-aki,Watanuki Yutaka
Marine Pollution Bulletin 62(12), 2845-2849, 2011-12
… The effects of toxic chemicals present in plastic debris on bird physiology should be investigated. …
NAID 120003811533