If you are a gold digger you want to find more gold.Therefore,you collect and analyse a maximum amount of,in particular,geological data and information as that would give you the best clues for finding new occurrences...If you are a gold digger you want to find more gold.Therefore,you collect and analyse a maximum amount of,in particular,geological data and information as that would give you the best clues for finding new occurrences.Geological maps are the main communication tools for geologists.Such maps may be quite complex for non-geologists but even for fellow geoscientists as these often cramp a multitude of subsurface information into a 2D frame.Geochemical information ranks high on the list of most wanted information for exploration geologists.Such information normally comes from geochemical analyses of rock or soil samples.For regional inventories often geochemical data sets from stream sedimentsare used.Nation-or even continent-wide geochemical data sets have now become available for many regions on this planet.展开更多
Ginger is a potential agricultural commodity to be developed in India. When the harvest comes, people still use a very simple method for harvesting ginger by using hoes, pick-axe and other farming equipments. The farm...Ginger is a potential agricultural commodity to be developed in India. When the harvest comes, people still use a very simple method for harvesting ginger by using hoes, pick-axe and other farming equipments. The farmers complain for the need of so many work forces for harvesting while the labor cost is getting increased and the time spent for harvesting process is too long. Although there is an alternative of imported ginger harvesting machines, those machines are not compatible with the farming environment in India, having a high initial and maintenance cost. This machine can be used in any farming condition in India and can be prepared at village level. This machine has three main parts namely, ginger digger, screener and power transmission system. This project is focusing on design and fabrication ginger harvesting machine. The screener will not only separate ginger from soil but also not let the ginger get harmed. The screener also uses for collectible part, to make this machine need some power transmission system from the engine. This machine needs Auto front petrol engine with rotation speed 20 - 25 rpm approximately with the aid of gear reduction.展开更多
The powered hole digger is one of the most important orchard machines.The power consumption of its drill is an important factor affecting the performance and operation of the device.The drill power consumption of the ...The powered hole digger is one of the most important orchard machines.The power consumption of its drill is an important factor affecting the performance and operation of the device.The drill power consumption of the digger at a constant feed rate is directly proportional to digging depth.This research discusses a newly designed powered hole digger using a slider-crank feed mechanism.The motion characteristics of the powered hole digger feeding mechanism was analysed.Additionally,an experiment was conducted to determine the characteristics of the drill power consumption.It can be concluded that there was a positive correlation between the drill power consumption and the powered hole digger feed rate.It was observed that when digging depth reached 200 mm,the drill power consumption reached the maximum power rating;subsequently the drill power consumption decreased with an increase of digging depth.When the drill reached the bottom of the hole,the power consumption of the new powered hole digger did not exceed the maximum designed power rating,hence the drill motor would not stall.展开更多
文摘If you are a gold digger you want to find more gold.Therefore,you collect and analyse a maximum amount of,in particular,geological data and information as that would give you the best clues for finding new occurrences.Geological maps are the main communication tools for geologists.Such maps may be quite complex for non-geologists but even for fellow geoscientists as these often cramp a multitude of subsurface information into a 2D frame.Geochemical information ranks high on the list of most wanted information for exploration geologists.Such information normally comes from geochemical analyses of rock or soil samples.For regional inventories often geochemical data sets from stream sedimentsare used.Nation-or even continent-wide geochemical data sets have now become available for many regions on this planet.
文摘Ginger is a potential agricultural commodity to be developed in India. When the harvest comes, people still use a very simple method for harvesting ginger by using hoes, pick-axe and other farming equipments. The farmers complain for the need of so many work forces for harvesting while the labor cost is getting increased and the time spent for harvesting process is too long. Although there is an alternative of imported ginger harvesting machines, those machines are not compatible with the farming environment in India, having a high initial and maintenance cost. This machine can be used in any farming condition in India and can be prepared at village level. This machine has three main parts namely, ginger digger, screener and power transmission system. This project is focusing on design and fabrication ginger harvesting machine. The screener will not only separate ginger from soil but also not let the ginger get harmed. The screener also uses for collectible part, to make this machine need some power transmission system from the engine. This machine needs Auto front petrol engine with rotation speed 20 - 25 rpm approximately with the aid of gear reduction.
基金Special Fund for Agro-scientific Research in the Public Interest(201203047)National Natural Science Foundation of China(51205150)the China Scholarship Council(201406765031).
文摘The powered hole digger is one of the most important orchard machines.The power consumption of its drill is an important factor affecting the performance and operation of the device.The drill power consumption of the digger at a constant feed rate is directly proportional to digging depth.This research discusses a newly designed powered hole digger using a slider-crank feed mechanism.The motion characteristics of the powered hole digger feeding mechanism was analysed.Additionally,an experiment was conducted to determine the characteristics of the drill power consumption.It can be concluded that there was a positive correlation between the drill power consumption and the powered hole digger feed rate.It was observed that when digging depth reached 200 mm,the drill power consumption reached the maximum power rating;subsequently the drill power consumption decreased with an increase of digging depth.When the drill reached the bottom of the hole,the power consumption of the new powered hole digger did not exceed the maximum designed power rating,hence the drill motor would not stall.
