A special Chinese herbal medicine(SCHM)harvester was designed to address the problems such as the highly labor-intensive process,low harvesting efficiency,and lack of suitable machinery.The designed machine was compri...A special Chinese herbal medicine(SCHM)harvester was designed to address the problems such as the highly labor-intensive process,low harvesting efficiency,and lack of suitable machinery.The designed machine was comprised of three main components,including a reciprocating cutter,a clamping chain,and a counter roller.In addition,a mechanical model of a plant stalk during harvester operation is established to analyze the parameters affecting SCHM harvesting:sprocket rotation speed,counter roller gap,and header inclination angle.Considering the operating mode of the harvester,all three parameters were taken as test factors,and the proportion of lost fruit,the proportion of broken capsules,and the length of the retained stem are the test indicators.According to the test results,the fruit lost was 1.14%,the broken fruit was 1.02%,the stalks with an acceptable length was 82.45%at a sprocket rotation speed of 110 r/min,a roller gap of 9 mm,and a header inclination angle of 5°.The research can provide an effective solution to solve the SCHM harvest problem.Further studies need to do for making this machine more automated and intelligent.展开更多
这是一篇不存在偏见的好文章。 记得在电视剧《北京人在纽约》中,有一个角色对中医中草药大放厥词,无知而又狂妄地贬低中医中草药。 而本文却说: Many parts of the world still do not have university—educated doctors.Nor dothey h...这是一篇不存在偏见的好文章。 记得在电视剧《北京人在纽约》中,有一个角色对中医中草药大放厥词,无知而又狂妄地贬低中医中草药。 而本文却说: Many parts of the world still do not have university—educated doctors.Nor dothey have costly hospitals.Yet injuries are treated.And diseaes are often cured.How?By ancient time methods.By medicines that might seem mysterious.even magical. 文章提供了不少读者已知或未知的趣闻。其中一则是: For centuries people in Asia and South America have used the roots of plantscontaining rotenone.Such plants are called tuba in Asia and barbasco in SouthAmerica.Fishermen threw the cut—up roots into the water.The rotenone paralyzesthe fish.They rise to the top,unable to move.They are cught easily. Nature is really a chemical factory.为什么? …many of these traditional medicines may provide the cure for some of today’smost serions diseases.这又是为什么? 这些问题的答案是简单的:All living things contain chemicals that help themsurvive.——人类无非借植物之“刀”杀人体之“病毒”而已。 这些问题的答?展开更多
基金supported by the Key R&D Program of Gansu Province(Grant No.2020YF8GA008)the China Agriculture Research System of MOF and MARA(CARS-21).
文摘A special Chinese herbal medicine(SCHM)harvester was designed to address the problems such as the highly labor-intensive process,low harvesting efficiency,and lack of suitable machinery.The designed machine was comprised of three main components,including a reciprocating cutter,a clamping chain,and a counter roller.In addition,a mechanical model of a plant stalk during harvester operation is established to analyze the parameters affecting SCHM harvesting:sprocket rotation speed,counter roller gap,and header inclination angle.Considering the operating mode of the harvester,all three parameters were taken as test factors,and the proportion of lost fruit,the proportion of broken capsules,and the length of the retained stem are the test indicators.According to the test results,the fruit lost was 1.14%,the broken fruit was 1.02%,the stalks with an acceptable length was 82.45%at a sprocket rotation speed of 110 r/min,a roller gap of 9 mm,and a header inclination angle of 5°.The research can provide an effective solution to solve the SCHM harvest problem.Further studies need to do for making this machine more automated and intelligent.
文摘这是一篇不存在偏见的好文章。 记得在电视剧《北京人在纽约》中,有一个角色对中医中草药大放厥词,无知而又狂妄地贬低中医中草药。 而本文却说: Many parts of the world still do not have university—educated doctors.Nor dothey have costly hospitals.Yet injuries are treated.And diseaes are often cured.How?By ancient time methods.By medicines that might seem mysterious.even magical. 文章提供了不少读者已知或未知的趣闻。其中一则是: For centuries people in Asia and South America have used the roots of plantscontaining rotenone.Such plants are called tuba in Asia and barbasco in SouthAmerica.Fishermen threw the cut—up roots into the water.The rotenone paralyzesthe fish.They rise to the top,unable to move.They are cught easily. Nature is really a chemical factory.为什么? …many of these traditional medicines may provide the cure for some of today’smost serions diseases.这又是为什么? 这些问题的答案是简单的:All living things contain chemicals that help themsurvive.——人类无非借植物之“刀”杀人体之“病毒”而已。 这些问题的答?
