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3 pentanone/dichloromethane

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GreinarKlínískar rannsóknirEinkaleyfi
4 niðurstöður

Syn-anti isomerization of aldols by enolization.

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A variety of aldol adducts are shown to undergo efficient syn-anti isomerization in the presence of imidazole by an enolization mechanism. Isomerizations are high yielding and occur with little or none of the usual byproducts arising from competing elimination or retroaldol reactions. Most

Charge separation distance for flexible donor-bridge-acceptor systems after electron-transfer quenching.

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Photoinduced transient dipole experiments are used to measure the effective charge separation distance, which is equivalent to the photoinduced change in dipole moment divided by the electron charge of flexible electron-donor/acceptor systems, D-(CH2)n-A, where D is 4- N,N-dimethylaniline, A is

Characterisation of cattle anal odour constituents associated with the repellency of Rhipicephalus appendiculatus.

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Adults of the Brown Ear Tick (Rhipicephalus appendiculatus) have a predilection for feeding inside and around the ears of cattle and other hosts. A previous study has shown that the tick locates the host ears by 'push-pull' deployment of a repellent blend emitted at the anal region and an attractant

Aroma chemicals isolated and identified from leaves of Aloe arborescens Mill. Var. Natalensis Berger.

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Extracts from leaves of aloe (Aloe arborescens Mill. var. natalensis Berger) were obtained using two methods: steam distillation under reduced pressure followed by dichloromethane extraction (DRP) and simultaneous purging and extraction (SPE). A total of 123 aroma chemicals were identified in the
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Heillasta gagnagrunnur lækningajurtanna sem studdur er af vísindum

  • Virkar á 55 tungumálum
  • Jurtalækningar studdir af vísindum
  • Jurtaviðurkenning eftir ímynd
  • Gagnvirkt GPS kort - merktu jurtir á staðsetningu (kemur fljótlega)
  • Lestu vísindarit sem tengjast leit þinni
  • Leitaðu að lækningajurtum eftir áhrifum þeirra
  • Skipuleggðu áhugamál þitt og vertu vakandi með fréttarannsóknum, klínískum rannsóknum og einkaleyfum

Sláðu inn einkenni eða sjúkdóm og lestu um jurtir sem gætu hjálpað, sláðu jurt og sjáðu sjúkdóma og einkenni sem hún er notuð við.
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