Informants were clear that only certain rivers could be effectively fished before the introduction of nets.
In the years that followed, the introduction of safety net programs such as Medicaid and Medicare improved the fortunes of many.
The introduction of safety nets [pdf] has made little difference, because people don't assemble them properly – if they use them at all.
The emergence of the hybrids appears to coincide with the introduction of the nets, and although it doesn't necessarily prove a causal relationship, the study again highlights the challenges of racing against the evolutionary speed of infectious diseases and their vectors.
In Britain, the European polecat was regarded as a serious poultry predator prior to the introduction of wire netting, therefore eliminating it was considered the only option to protect stock.
(International agency, Zimbabwe) In Mozambique, younger researchers mostly favoured the introduction of bed nets.
Before the introduction of treated nets, Bangladesh reported as about 50,000 confirmed malaria cases and 450 malaria deaths annually [ 14].
For example, the total costs and health effects of the introduction of bed-nets in malaria control is likely to be dependent on whether the population is receiving malaria prophylaxis: this means that three interventions would be evaluated – bed-nets only, malaria prophylaxis only and bed-nets in combination with malaria prophylaxis.
When the Inuit gained access to improved food-securing methods, with the introduction of guns, nets and steel harpoons, the number of dogs kept generally increased to between five and eight, as the owners were able to procure more food for themselves and for their dogs.
Developments which have followed the wake of stock assessment and monitoring studies include: introduction of monofilament nylon net, development of a special scoop net to permit mass harvest of clupeids after they have been attracted to light, and the design of a larger canoe which would help to extend the fishery into open water.
