Ib co kua nplaum uas cov ntsuj plig muaj peev xwm pab tau nyob rau hauv kev daws teeb meem txhaum cai

Cov soj ntsuam ntawm hais tias ib co kua nplaum ntawm naj hoom yuav pab tau tub ceev xwm lub koom haum daws tau teeb meem txhaum cai. Zaum tau pom tias cov tshuaj Cheebtsam ntawm cov tshuaj tsw qab yuav tsum kis los ntawm ib tug neeg mus rau lwm los ntawm cov khaub ncaws, txawm yog hais tias tus hu yog heev luv luv. Tom ntej no no cov tshuaj tsw qab yuav nyob rau hauv lub khaub ncaws rau ib tug ob peb hnub, txawm lub fact tias txo lub sij hawm. Ib pab neeg ntawm soj ntsuam hais tias lawv ua hauj lwm yog ib tug pov thawj-of-hauv paus ntsiab lus, uas yuav qhia tau tias tus dab yuav siv tau ua pov thawj.

ntawv ntawm cov kev tshawb fawb

Cov soj ntsuam ntawm luam tawm lawv ua hauj lwm nyob rau hauv cov phau ntawv journal "Science & Kev Ncaj Ncees". Lawv hais tias lub naj hoom tsom xam yuav ua tau ib tug uas pab nyob rau hauv tus neeg mob thaum muaj ib tug nyob ze lub cev chwv, xws li los ntawm kev sib deev kev ua phem.

Lead soj ntsuam Simon Gergely los ntawm University College London, hais tias: "Peb yuav tsum hais tias tus tsom xam ntawm ib co kua nplaum ntawm naj hoom muaj enormous tej zaum, raws li muaj coob tus neeg siv lawv. Nyob rau hauv qhov tseeb, hais txog 90% ntawm cov poj niam thiab 60% ntawm cov txiv neej siv lawv tsis tu ncua. "

Txawm hais tias muaj ntau ntau yam kev tshawb fawb nyob rau hauv lub teb ntawm forensic science - piv txwv li, tus tsom xam ntawm fibers los yog hmoov residue tom qab firing - kom deb li deb muaj tsis muaj kev tshawb fawb txog cov kev hloov ntawm tej ntsuj plig.

Cov qhabnias ntawm lub chaw ua hauj lwm ntawm zaum

Naj hoom yog tsim los ntawm ntau yam tshuaj Cheebtsam, uas ua ke muaj ib tug tshwj xeeb tsis hnov tsw. Cov soj ntsuam ntawm ua hauj lwm nrog ib tug txiv neej cov tshuaj tsw qab. Lawv nrhiav tau tias ib co ntawm cov Cheebtsam yog yooj yim kis los ntawm ib tug mus rau lwm daim paj rwb.

Thaum ob daim ntawm cov ntaub ntawv uas tau nias ua ke rau ib feeb, kis tau mus rau ib tug thib ob ntaub 15 ntawm 44 tshuaj Cheebtsam. Thaum cov kev sib cuag lub sij hawm twb tau nce mus rau 10 feeb, nyob rau lwm yam cov ntaub so ntswg dhau rau 18 Cheebtsam.

Yuav ua li cas ib qho tseem ceeb yog lub sij hawm

Zaum kuj saib xyuas raws li lub sij hawm influences lub thauj ntawm volatile sib txuas.

Lawv nrhiav tau hais tias yog tom qab 5 feeb tom qab nws tau raug tsuag nrog cov tshuaj tsw qab, nyem daim ntaub mus rau lwm yam rau 10 feeb, ces nws yuav mus 24 ntawm 44 naj hoom cov khoom xyaw. Yog hais tias cov tshuaj tsw qab tau tsuag 6:00 rov qab rau lwm cov ntaub so ntswg nyob rau hauv kev tiv tauj kis 12 lub Cheebtsam, thaum ib lub lim tiam tom qab ntawd koj tseem nrhiav ib co kua nplaum ntawm rau volatile Cheebtsam.

Dr. Ruth Morgan, tus thawj coj ntawm lub Center rau Criminology, hais tias zaum ua tsaug rau qhov no sim txoj kev tshawb no yuav qhia tau tias tus dab yuav yuav kis tau mus rau lwm cov ntaub so ntswg, thiab nws tseem tau los mus txiav txim raws nraim thaum nws tshwm sim.

Yuav ua li cas siv naj hoom mus recreate lub txim txhaum scene

Nyob rau hauv lub neej yav tom ntej tej zaum yuav zoo tau yam teeb meem uas nws yuav tsum tau hu rau ntawm ob tug neeg, tiam sis qhov no txoj kev tso cai rau koj mus nrhiav seb yog dab tsi zoo ntawm kev sib cuag tau tshwm sim thiab thaum twg nws yog.

Txawm li cas los, zaum hais tias xws li cov pov thawj yuav tsum tau sau heev sai sai tom qab nws tau tshwm sim ua txhaum, txij li thaum ncua sij hawm tej zaum yuav txwv tsis pub nws cov usefulness. Qhov no txhais tau hais tias kev siv ntawm ib co kua nplaum ntawm naj hoom yog tsis ib txwm ua tau, vim hais tias ntawm lub teeb meem txhaum cai feem ntau los ua lub npe hu ib tug ob peb hnub tom qab lawv tau cog lus. Nyob rau hauv tas li ntawd, nws yog tsis zoo li hais tias lawv yuav tsum tsuas yog siv tus ntxhiab kom daws tau qhov teeb meem no.

Tom ntej no dab yuav tsis yuav tus tsuas pov thawj ntawm ib txoj kev txhaum. Zaum cia siab tias qhov no muaj pov thawj yuav tsum tau siv nyob rau hauv ib tug complex, ua ke nrog DNA tsom xam, piv txwv li, los yog cov yiv tes. Thiab nyob rau hauv nrog lwm yam ntaub ntawv ntawm cov pov thawj nws yuav tsim ib tug heev pov daim duab.

Soj ntsuam ntawm hais tias nws yog tsim nyog los nqa tawm ntau ua hauj lwm rau kev ntsuam xyuas kev siv ntawm naj hoom rau kev hais plaub ntug tiag reconstructions.