Hypokeimenon

Architecture

primarystructure

Themainstructureorenvelopestructureofabuilding.

Biology

basalbody

Alsoknownaskinetosome.

Thematrixis​​themicrotubuleorganizationcenterofciliaandflagella.Ithasa9(3)+0structure,butthematrixonlycontainsonecentriolesinsteadofapairofcentrioles(whichisresponsibleforcellmitosis).Thematrixis​​alsocalledthekinetosome,whichisresponsibleforthesynthesisofflagellaandcilia.

Theswellingpartofthebasalendofflagellaandciliaofprotists.Ithasacylindricalshape,anditsstructureisbasicallysimilartoflagellaorciliaitself,butitisbasicallynotcoveredbycellmembranesandhasnocentraltwomicrotubules.ThebasalbodiesofflagellatessuchasEuglenaareoftenconnectedtothenucleusbyrootfilaments,whichshowsthattheactivityofflagellaiscontrolledbythenucleus.Insomespecies,thematrixactsasacentralbodyduringnuclearfission.Thematrixofciliatesisoftencalledthemovingbody.Eachbasalbodyemitsacilia.Underthesurfacemembrane,thebasalbodiesareneatlyarrangedinrows,andtheyareconnectedwitheachotherbythefibrilsformedbytheoriginalspecialization,whichconductsimpulsesandcoordinatestheactivitiesofthecilia.Someothermulticellularanimalsalsohavethisstructure.

Materials

matrix

Itisoneofthemaincomponentsinthecompositematerialtobondthereinforcementbodyintoawholeandtransfertheloadtothereinforcementbody.

Matrixesarebasicallyclassifiedaccordingtothetypesofrawmaterials,namelypolymer(resin)base,metalbase,ceramicbase,glassandglassceramicbase,carbonbase(includinggraphitebase)andcementbase.

Thepolymer(resin)basecanbedividedintothermosettingpolymerbase(suchasepoxyresin,unsaturatedpolyesterandpolyimide,etc.)andthermoplasticpolymerbase(suchasvariousGeneral-purposeplasticsandhigh-performancevarietiessuchaspolyetherphenol,polyphenylenesulfide,andpolyetheretherketone).Polymer(resin)matrixis​​widelyusedincompositematerials,anditstechnologyismature,especiallythermosettingpolymershavealonghistoryofuse,butgenerallytheycanonlybeusedbelow300°C.CommonlyusedmetalsubstratesareAl,Mg,Ti,etc.,andhigh-temperaturealloysandrefractorymetalsarealsoontrial.Theirusetemperaturerangeis400～1100℃,buttheprocessisnotyetmature.Theglassandceramicsubstratesarestillintheexperimentalstage,andthetechnologyisveryimmature,butbecausethetemperaturerangeis600～1400℃,itisveryattractive.Theoperatingtemperatureofthecarbon(graphite)matrixcanexceed2000°Cundertheconditionofanti-oxidationmeasures.Cementmatrixhasashorthistoryincompositematerials,butitisexpectedtobecomeamaterialwithalargeamount.Byestablishingthequantitativerelationshipbetweenthematrixandthesensingfiberstrain,thestraintransmissionerrorcanbeeliminatedandthetestaccuracycanbeimproved.

Analysis

matrix

InX-rayfluorescenceanalysis,thematrixis​​theentiresampleexceptfortheanalysiselements.Therefore,inamulti-elementsystem,thematrixofthesamesampleisdifferentforeachanalysiselementinthesample.Moreover,therelativeerrorofthematrixmatchingmethodinthedeterminationofaluminumincastzincalloysislessthan0.4%.

Geology

Matrix(matrixpalaeosome,palaeosome)isalsocalledpaleosome(palaeosome)andmesosome(mesosome).Intherockwithaweakdegreeofmigmatization,itcanusuallybedividedintotwoparts:the"matrix"oftheoriginalmetamorphicrockandthenewlyformed"vein".Thematrixpartbasicallyrepresentsthecompositionoftheoriginalmetamorphicrock.Generally,therearemanydarkminerals.Sometimesduetotheinfluenceofmetasomatism,theremaybeacertaindegreeofchange,suchascoarseningofgrainsize,increaseoffelsic,andbiotizationofhornblende,etc..Asthedegreeofmixedpetrificationincreases,theboundarybetweenthematrixandveinsgraduallydisappears.