China is a large agricultural country. With the development of industrial production, mechanized harvesting has become an inevitable trend material harvesting. In this paper, based on latest technology polycrystalline ferroelectric composite materials in design shovel frame harvester’s vibrating excavating shovel, relevant theories and are literature. After understanding, structure harvester wa...

The 2009 stimulus package released a burst of pent-up creativity in the applications submitted by US researchers, but there was a complicating factor with funding decisions: the need for quick results. Quinn Eastman provides a progress report.

The loss of soil particles due to erosion is one the main problems current agriculture. However, tillage may also contribute undesirable transport particles. It note that effects particular working elements used on implements for have not been described in a sufficient way. To determine translocation particles, measurements were done Central Bohemian region. Two basic machines measureme...

The authors have developed a row-crop cultivator equipped with ridge former, which allows performing high-quality operations of row crop cultivation in one pass. inter is carried out cultivator, on each section two formers are mounted so that their flat discs directed towards the plants at an acute angle, and extreme edges wings V-shaped sweeps located lower base soil ridge. When moves, loosen ...

The earliest industrial monuments in Britain are the Neolithic flint mines, dating to around 4000 bce . These mining shafts, which tunnel deep into chalk geologies, evidence extremes that ancient Britons were willing resort order obtain valuable raw materials. Numerous scholars, marvelling at excavation processes and hand tools used aid extraction of flint, have studied flint-mining industry. R...