Most TibetanBuddhist ritualimplements andsacrificialobjects were cast in gold,silver or copper, in additionto those made of wood,bone,stone,shells,cloth,silks and brocade heyconstitute an important partof he treasure ...Most TibetanBuddhist ritualimplements andsacrificialobjects were cast in gold,silver or copper, in additionto those made of wood,bone,stone,shells,cloth,silks and brocade heyconstitute an important partof he treasure house ofTibetan Buddhism.展开更多
Sergei Winogradsky illuminated revolutionary concepts and produced a tool to visualize complex microbial communities and their metabolisms over time:columns displaying aquatic consortia with variety of niches.We worke...Sergei Winogradsky illuminated revolutionary concepts and produced a tool to visualize complex microbial communities and their metabolisms over time:columns displaying aquatic consortia with variety of niches.We worked with museums in Utah to create Winogradsky columns that would highlight aesthetic properties of the Great Salt Lake(GSL)ecosystem,which has a salinity gradient from the freshwater wetlands to salt saturation.One column,constructed using haloarchaea-rich hypersaline brine and oolitic sand of the lake’s north arm,was enriched with nutrients,and resulted in the desired pink hue over time.After a seven-year maturation period,we examined the microbial taxa present in the water through 16 S/18 S rRNA and Internal Transcribed Spacer(ITS)gene sequencing.A pigment analysis revealed an abundance of bacteriochlorophyll a.The presence of this pigment coupled with the DNA sequencing results,suggest that the haloarchaea that dominate the GSL brine,were not responsible for the pink coloration,but instead Gammaproteobacteria,especially Halorhodospira species.Among the eukaryotes,the lack of phytoplankton and the abundance of fungi were noteworthy observations.These data likely relate to the reduction of oxygen in a non-aerated sealed system over time.Our second exhibit had the goal of educating museum goers about the varying salinities of Great Salt Lake.Here we employed three distinct columns of water and sediment from this salinity gradient.Observations of these columns overtime gave us information about invertebrate communities in addition to the microbial consortia.Both installations taught us about comparing an artificial environment in a museum setting to the natural ecosystem.Taken together,we present the data collected and lessons learned from using Winogradsky columns in public spaces for teaching about an important saline lake.展开更多
传统的科技馆展厅控制系统在设备改变时需要手动进行操作,往往无法及时改变设备的运行状态以适应游客的需求。为此,设计了基于远距离无线电(Long Range Radio,LoRa)物联网的科技馆展厅智能控制系统。在硬件上,设计数据采集器和控制模块...传统的科技馆展厅控制系统在设备改变时需要手动进行操作,往往无法及时改变设备的运行状态以适应游客的需求。为此,设计了基于远距离无线电(Long Range Radio,LoRa)物联网的科技馆展厅智能控制系统。在硬件上,设计数据采集器和控制模块,以提高工作效率和避免数据丢失,软件方面,设计信息命令接收模块,并利用数据处理模块对接收到的命令进行数据处理,在LoRa物联网技术的基础上,结合模块设计,实现科技馆展厅智能控制,系统测试结果表明该研究方法具备具有良好的反馈速度,系统的基础运行性能更好。展开更多
文摘Most TibetanBuddhist ritualimplements andsacrificialobjects were cast in gold,silver or copper, in additionto those made of wood,bone,stone,shells,cloth,silks and brocade heyconstitute an important partof he treasure house ofTibetan Buddhism.
基金Supported by the NASA Utah Space Grant Consortium and Preston Chiaro。
文摘Sergei Winogradsky illuminated revolutionary concepts and produced a tool to visualize complex microbial communities and their metabolisms over time:columns displaying aquatic consortia with variety of niches.We worked with museums in Utah to create Winogradsky columns that would highlight aesthetic properties of the Great Salt Lake(GSL)ecosystem,which has a salinity gradient from the freshwater wetlands to salt saturation.One column,constructed using haloarchaea-rich hypersaline brine and oolitic sand of the lake’s north arm,was enriched with nutrients,and resulted in the desired pink hue over time.After a seven-year maturation period,we examined the microbial taxa present in the water through 16 S/18 S rRNA and Internal Transcribed Spacer(ITS)gene sequencing.A pigment analysis revealed an abundance of bacteriochlorophyll a.The presence of this pigment coupled with the DNA sequencing results,suggest that the haloarchaea that dominate the GSL brine,were not responsible for the pink coloration,but instead Gammaproteobacteria,especially Halorhodospira species.Among the eukaryotes,the lack of phytoplankton and the abundance of fungi were noteworthy observations.These data likely relate to the reduction of oxygen in a non-aerated sealed system over time.Our second exhibit had the goal of educating museum goers about the varying salinities of Great Salt Lake.Here we employed three distinct columns of water and sediment from this salinity gradient.Observations of these columns overtime gave us information about invertebrate communities in addition to the microbial consortia.Both installations taught us about comparing an artificial environment in a museum setting to the natural ecosystem.Taken together,we present the data collected and lessons learned from using Winogradsky columns in public spaces for teaching about an important saline lake.
文摘传统的科技馆展厅控制系统在设备改变时需要手动进行操作,往往无法及时改变设备的运行状态以适应游客的需求。为此,设计了基于远距离无线电(Long Range Radio,LoRa)物联网的科技馆展厅智能控制系统。在硬件上,设计数据采集器和控制模块,以提高工作效率和避免数据丢失,软件方面,设计信息命令接收模块,并利用数据处理模块对接收到的命令进行数据处理,在LoRa物联网技术的基础上,结合模块设计,实现科技馆展厅智能控制,系统测试结果表明该研究方法具备具有良好的反馈速度,系统的基础运行性能更好。
