Voorbeelden van compaction

• The increased size and use of machinery introduced soil problems, such as compaction, and required greater management skill.

• Explosives are now used in such diverse fields as welding, bulk cladding of plates, forming, sizing, powder compaction, hardening, and cutting.

• The system is expensive of time and energy but produces fine soil aggregates to planting depth with serious risks of compaction deeper in the profile.

• With continuing subduction the pelagic sediments might have been dragged beneath the accretionary prism leading to compaction and expulsion of large amounts of pore fluids.

• Many structural events are associated with compaction, including blastomere polarisation, blastomere flattening and gap junction formation.

• This is really not surprising, given that the compaction method pays no attention to the probabilities that play a crucial role in evaluation.

• However, minimum or zero tillage would not be suitable for soils that are susceptible to compaction, and for highly degraded soils.

• Here we examine the expression profile of uvomorulin at the cellular level, in oocytes and embryos up to and during compaction.

• To reduce compaction of moist soil and obviate the need for harrowing to level the fields, controlled traffic is being introduced in rice-wheat systems.

• Thus, good agricultural practice of subsoiling to alleviate compaction before planting is probably the key to mitigating the adverse effects on yield.

• Compaction of the sediment would also result in a reduction of the photic zone.

• Only some small folding at the contact occurs, probably due to differential compaction.

• Possible mechanisms underlying the rearrangements which take place both at fertilisation and during compaction and experimental decompaction are discussed.

• The possibility therefore exists that the uvomorulinmediated interaction between cells might involve protein phosphorylations and that these are central to the events of compaction.

• Many growers respond to problems of compaction by top-dressing nitrogen and increasing the amount of irrigation applied.