有效的驱蚊方法英语作文

有效的驱蚊方法英语作文 　The research, at the University of California Riverside, is based on the fact that mos

有效的驱蚊方法英语作文 Theresearch,attheUniversityofCalifornia Riverside,isbasedonthefactthatmosquitoesusethe samereceptorfordetectingcarbondioxideinourbreathas theydofortheodorfromourskinwhentheyecloser. Theleadinvestigator,AnandasankarRay,says scientiststestedmorethanamillionchemicalpoundsuntil theyfoundasubstancecalledEthylpyruvatethatshuts downthemosquitoes’receptor. “WhenweapplyEthylpyruvatetoahumanarmandoffer ittohungrymosquitoesinacage,thenveryfewofthe mosquitoesareattractedtothehumanarmbecauseonlya fewofthemareabletosmellitout,"saidRay. GenevieveTauxe,alsoontheteam,saysfindingthe mosquitoneuronsthatdetectbothourbreathandskinodor wasnoteasy. “Withthisapparatus,weareabletoaverysmall electrodeintothepartofthemosquito'snose, effectively,whereitsolfactoryneuronsareandwherethe smellishappening,"saidTauxe. Withtheseinstruments,scientistswereabletodetect thesignalsthatamosquito’sneuronssendtoitsbrain whenitsensesattractiveodors.Spikesontheputerscreen showwhentheattractionisstrongorweak.