The cold chain in the production area of fruits and vegetables is the primary link to reduce product loss and improve product quality,but it is also a weak link.With the application of big data technology in cold chai...The cold chain in the production area of fruits and vegetables is the primary link to reduce product loss and improve product quality,but it is also a weak link.With the application of big data technology in cold chain logistics,intelligent devices,and technologies have become important carriers for improving the efficiency of cold chain logistics in fruit and vegetable production areas,extending the shelf life of fruits and vegetables,and reducing fruit and vegetable losses.They have many advantages in fruit and vegetable pre-cooling,sorting and packaging,testing,warehousing,transportation,and other aspects.This article summarizes the rapidly developing and widely used intelligent technologies at home and abroad in recent years,including automated guided vehicle intelligent handling based on electromagnetic or optical technology,intelligent sorting based on sensors,electronic optics,and other technologies,intelligent detection based on computer vision technology,intelligent transportation based on perspective imaging technology,etc.It analyses and studies the innovative research and achievements of various scholars in applying intelligent technology in fruit and vegetable cold chain storage,sorting,detection,transportation,and other links,and improves the efficiency of fruit and vegetable cold chain logistics.However,applying intelligent technology in fruit and vegetable cold chain logistics also faces many problems.The challenges of high cost,difficulty in technological integration,and talent shortages have limited the development of intelligent technology in the field of fruit and vegetable cold chains.To solve the current problems,it is proposed that costs be controlled through independent research and development,technological innovation,and other means to lower the entry threshold for small enterprises.Strengthen integrating intelligent technology and cold chain logistics systems to improve data security and system compatibility.At the same time,the government should introduce relevant policies,provide necessary financial support,and establish talent training mechanisms.Accelerate the development and improvement of intelligent technology standards in the field of cold chain logistics.Through technological innovation,cost control,talent cultivation,and policy guidance,we aim to promote the upgrading of the agricultural industry and provide ideas for improving the quality and efficiency of fruit and vegetable cold chain logistics.展开更多
为了实现农产品低湿节能干燥,分析了典型转轮除湿干燥模式,基于能耗高、结构不合理等问题,开展转轮热泵联合除湿干燥系统优化设计与试验研究,研制出转轮除湿热泵干燥机。为了检验并提高转轮除湿热泵干燥机的作业性能,该文以杏鲍菇为研...为了实现农产品低湿节能干燥,分析了典型转轮除湿干燥模式,基于能耗高、结构不合理等问题,开展转轮热泵联合除湿干燥系统优化设计与试验研究,研制出转轮除湿热泵干燥机。为了检验并提高转轮除湿热泵干燥机的作业性能,该文以杏鲍菇为研究对象,以降低杏鲍菇色差、除湿能耗比,提高复水性为目标,运用Box-Benhnken中心组合试验设计理论,对再生温度、干燥温度、转换点相对湿度影响其干燥品质与能耗的因素开展响应面试验。通过数据分析,建立了响应面模型,结合四维渲染图分析了上述3个考察指标受3个试验因素取值变化的影响机制,同时对各影响因素进行了综合优化与试验验证。结果表明,3个模型的R2均大于0.98,试验因素对干燥品质及能耗有较大影响,当再生温度87℃,干燥温度50℃,转换点相对湿度45%时,杏鲍菇复水比4.028,色差22.89,除湿能耗比(specific power consumption,SPC)2 633 k J/kg,与预测绝对值误差均低于6个百分点。该研究为转轮除湿热泵干燥设备的设计及干燥工艺优化提供参考。展开更多
The transport of phosphate between cytoplasm and subcellular compartments is critical for plant metabolic regulation.We conducted bioinformatic analysis,heterologous expression in yeast,gene expression pattern and sub...The transport of phosphate between cytoplasm and subcellular compartments is critical for plant metabolic regulation.We conducted bioinformatic analysis,heterologous expression in yeast,gene expression pattern and subcellular localization analysis to characterize the possible functions of OsPHT4 gene family in rice.Together with the PHT4 genes from higher plants,OsPHT4s can be classified into six distinct groups.OsPHT4;1-OsPHT4;4 are targeted to chloroplasts,and OsPHT4;6-1 and OsPHT4;6-2 are located to Golgi apparatus.OsPHT4 proteins can mediate inorganic phosphate(Pi)transport in yeast.In addition,dynamic transcriptional changes determined by qRT-PCR revealed different expression profiles of OsPHT4 genes in response to phosphate starvation,salicylic acid,abscisic acid and salt stress treatments.These results suggested that OsPHT4 proteins are involved in Pi distribution between the cytoplasm and chloroplast or Golgi apparatus and also involved in stress responses.展开更多
基金National Natural Science Foundation of China(32301718)Chinese Academy of Agricultural Sciences under the Special Institute-level Coordination Project for Basic Research Operating Costs(S202328)。
文摘The cold chain in the production area of fruits and vegetables is the primary link to reduce product loss and improve product quality,but it is also a weak link.With the application of big data technology in cold chain logistics,intelligent devices,and technologies have become important carriers for improving the efficiency of cold chain logistics in fruit and vegetable production areas,extending the shelf life of fruits and vegetables,and reducing fruit and vegetable losses.They have many advantages in fruit and vegetable pre-cooling,sorting and packaging,testing,warehousing,transportation,and other aspects.This article summarizes the rapidly developing and widely used intelligent technologies at home and abroad in recent years,including automated guided vehicle intelligent handling based on electromagnetic or optical technology,intelligent sorting based on sensors,electronic optics,and other technologies,intelligent detection based on computer vision technology,intelligent transportation based on perspective imaging technology,etc.It analyses and studies the innovative research and achievements of various scholars in applying intelligent technology in fruit and vegetable cold chain storage,sorting,detection,transportation,and other links,and improves the efficiency of fruit and vegetable cold chain logistics.However,applying intelligent technology in fruit and vegetable cold chain logistics also faces many problems.The challenges of high cost,difficulty in technological integration,and talent shortages have limited the development of intelligent technology in the field of fruit and vegetable cold chains.To solve the current problems,it is proposed that costs be controlled through independent research and development,technological innovation,and other means to lower the entry threshold for small enterprises.Strengthen integrating intelligent technology and cold chain logistics systems to improve data security and system compatibility.At the same time,the government should introduce relevant policies,provide necessary financial support,and establish talent training mechanisms.Accelerate the development and improvement of intelligent technology standards in the field of cold chain logistics.Through technological innovation,cost control,talent cultivation,and policy guidance,we aim to promote the upgrading of the agricultural industry and provide ideas for improving the quality and efficiency of fruit and vegetable cold chain logistics.
文摘为了实现农产品低湿节能干燥,分析了典型转轮除湿干燥模式,基于能耗高、结构不合理等问题,开展转轮热泵联合除湿干燥系统优化设计与试验研究,研制出转轮除湿热泵干燥机。为了检验并提高转轮除湿热泵干燥机的作业性能,该文以杏鲍菇为研究对象,以降低杏鲍菇色差、除湿能耗比,提高复水性为目标,运用Box-Benhnken中心组合试验设计理论,对再生温度、干燥温度、转换点相对湿度影响其干燥品质与能耗的因素开展响应面试验。通过数据分析,建立了响应面模型,结合四维渲染图分析了上述3个考察指标受3个试验因素取值变化的影响机制,同时对各影响因素进行了综合优化与试验验证。结果表明,3个模型的R2均大于0.98,试验因素对干燥品质及能耗有较大影响,当再生温度87℃,干燥温度50℃,转换点相对湿度45%时,杏鲍菇复水比4.028,色差22.89,除湿能耗比(specific power consumption,SPC)2 633 k J/kg,与预测绝对值误差均低于6个百分点。该研究为转轮除湿热泵干燥设备的设计及干燥工艺优化提供参考。
基金This study was financially supported by the National Natural Science Foundation of China(Grant Nos.31801924 and 31972492).
文摘The transport of phosphate between cytoplasm and subcellular compartments is critical for plant metabolic regulation.We conducted bioinformatic analysis,heterologous expression in yeast,gene expression pattern and subcellular localization analysis to characterize the possible functions of OsPHT4 gene family in rice.Together with the PHT4 genes from higher plants,OsPHT4s can be classified into six distinct groups.OsPHT4;1-OsPHT4;4 are targeted to chloroplasts,and OsPHT4;6-1 and OsPHT4;6-2 are located to Golgi apparatus.OsPHT4 proteins can mediate inorganic phosphate(Pi)transport in yeast.In addition,dynamic transcriptional changes determined by qRT-PCR revealed different expression profiles of OsPHT4 genes in response to phosphate starvation,salicylic acid,abscisic acid and salt stress treatments.These results suggested that OsPHT4 proteins are involved in Pi distribution between the cytoplasm and chloroplast or Golgi apparatus and also involved in stress responses.
