00900naa a2200217 a 450000100080000000500110000800800410001910000180006024500900007826000090016852003310017765000090050865300070051765300140052470000170053870000200055570000200057570000180059570000140061377300550062710265652018-07-12       1989    bl ---       0--  u    #d1 aVAZ, C. M. P.  aUsing a computed tomography miniscanner for studying tillage induced soil compaction.  c1989  aGamma0ray computed tomography (CT) is used to study thin compacted soil layers, such as millimeter thick "blades" that occur at plowing depth.The technique has the advantage, over the traditional gamma-ray attenuation techniques, of opening the possibility of measuring water contents and bulk-densities of odd-shaped samples.  asoil  aCT  aGamma-ray1 aCRESTANA, S.1 aMASCARENHAS, S.1 aCRUVINEL, P. E.1 aREICHARDT, K.1 aSTOLF, R.  tSoil Tecnhology, Cremlingengv.2, p.313-321, 1989.