Piv txwv li, qhov Kastle–Meyer test yuav qhia tau tias tus qauv tsis yog ntshav lossis cov qauv no tej zaum yog ntshav tab sis tej zaum yuav yog cov khoom siv tsawg dua. Kev kuaj tshuaj ntxiv yog xav tau los ua pov thawj tias cov tshuaj yog ntshav. Cov kev kuaj pom tseeb yog cov kev sim uas yuav tsum tau ua kom paub meej qhov kev tshuaj ntsuam.
Ib qho piv txwv ntawm kev kuaj pom tshuaj rau tshuaj yog dab tsi?
Cov kev kuaj pom tseeb suav nrog lub roj teeb ntawm kev ntsuas ntsuas siv cov tswv yim xws li Gas Chromatograph-Mass Spectrometry (GC-MS) lossis infrared spectroscopy uas cais cov neeg sib xyaw hauv cov khoom thiab txheeb xyuas qhov zoo cov tshuaj kos npe ntawm cov khoom tsis raug cai hauv cov khoom siv.
Kev kuaj ntshav pom tseeb yog dab tsi?
Kev kuaj ntshav kom paub meej. Yog tias qhov stain zoo rau qhov muaj peev xwm ntawm cov ntshav los ntawm qhov kev sim ua ntej, nws yuav tsum tau mus rau qhov kev kuaj pom tseeb, lossis qhov muaj peev xwm ntawm qhov tsis muaj tseeb. Cov kev kuaj pom tseeb yuav tsum muaj peev xwm txheeb xyuas cov khoom nrog qhov tsawg tshaj plaws ntawm qhov ua tau tsis zoo.
Puas yog kuaj DNA kuaj pom tseeb?
Thaum cov teeb meem lom neeg tau lees paub tias tam sim no, lub chaw kuaj sim tuaj yeem ua qhov ntsuas los txiav txim qhov chaw. Kev kuaj tam sim no: DNA. Txawm li cas los xij, DNA tsis suav tias yog qhov kev kuaj pom tseeb rau ntshav, phev lossis qaub ncaug.
3 qhov kev kuaj ntshav kom paub tseeb yog dab tsi?
Kev kuaj ntshav rau cov ntshav suav nrog txheeb xyuas cov qe ntshav hauv qab amicroscope [Shaler, 2002], kev sim siv lead ua xws li Teichman thiab Takayama kev xeem [Shaler, 2002; Spalding, 2003], thiab kev ntsuam xyuas ultraviolet absorption [Gaensslen, 1983].
