Feasibility study of large-scale mass customization 3D printing framework system with a case study on Nanjing Happy Valley East Gate

At present, the development and implementation of digital transformation are the keys to promoting high-quality industry development. The new digital fabrication method of robotic 3D printing is a research area being studied by many to tackle the issue of the declining productivity of traditional construction methods. Although many studies have been done, most of the current 3D printing projects are facing limitations in terms of scale. In order to bridge the gap, this article proposed a mass customization 3D printing framework system for large-scale projects. This article discusses how mass customization is made possible through the joint operation of the FUROBOT software and 3D printing hardware. By taking the east gate of Nanjing Happy Valley Plaza as a case study, the article demonstrates and studies the feasibility of the large-scale mass customization 3D printing framework system.     

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行云流水 日本鹤冈文化馆

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水稻灌区高效水肥管理模式研究与示范

正提出了水稻不同生育期水分亏缺指数阈值、氮素亏缺诊断阈值;形成了基于无人机与智能手机平台的水稻水分亏缺诊断方法、氮素亏缺诊断方法;明确了不同水氮管理稻田氮磷流失规律,形成了水稻高效水肥管理模式。在节水灌溉稻田,引入了最新的实地氮肥管理技术,开展水肥联合调控,揭示了水肥联合调导体的氨挥发损失、深层渗漏损失、地表     

房屋市政工程复工复产指南

1总则各参建单位(含建设、施工、监理等)项目负责人是疫情防控和复工复产的第一责任人,按照"谁用工、谁管理、谁负责"要求,严格落实各项防控措施,确保疫情防控和工程质量安全管控到位。2复工复产条件2.1防控机制组建疫情防控复工复产工作组,指定专人负责对接工程项目所在地的政府、街道、社区及定点医院。2.2专项方案编制疫情防控方案和复工复产组织方案,对现场管理、人员管控、物资储备和应急处置等作出安排,明确具体要求和措施。     

陈蕴博院士赴河南安阳精密制造产业园现场考察

<正>不久前,机械科学研究总院先进制造技术研究中心副总工程师,中国循环经济协会精密成型与再制造专委会首席技术专家委员会主任陈蕴博院士一行赴苏氏精密制造技术股份有限公司安阳精密制造产业园基地进行现场考察。陈蕴博院士认真听取了该公司关于"苏氏集成精密成型技术"工艺研发生产的过程,以及该公司对基础工业领域技术发展方向的展望介绍,并参观了该公司近年来研发的上百种专利产品,陈院士对"苏氏集成精密成型技术"的成果尤其在军工领域的     

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Amination of biochar surface from watermelon peel for toxic chromium removal enhancement

Watermelon peel residues were used to produce a new biochar by dehydration method. The new biochar has undergone two methods of chemical modification and the effect of this chemical modification on its ability to adsorb Cr(VI) ions from aqueous solution has been investigated. Three biochars, Melon-B, Melon-BO-NH_2 and Melon-BO-TETA, were made from watermelon peel via dehydration with 50% sulfuric acid to give Melon-B followed by oxidation with ozone and amination using ammonium hydroxide to give Melon-BO-NH_2 or Triethylenetetramine(TETA) to give Melon-BO-TETA. The prepared biochars were characterized by BET, BJH,SEM, FT-IR, TGA, DSC and EDAX analyses. The highest removal percentage of Cr(VI) ions was 69% for Melon-B,98% for Melon-BO-NH_2 and 99% for Melon-BO-TETA biochars of 100 mg·L~(-1) Cr(VI) ions initial concentration and 1.0 g·L~(-1) adsorbents dose. The unmodified biochar(Melon-B) and modified biochars(Melon-BO-NH_2 and Melon-BO-TETA) had maximum adsorption capacities(Qm) of 72.46, 123.46, and 333.33 mg·g~(-1), respectively.The amination of biochar reduced the pore size of modified biochar, whereas the surface area was enhanced.The obtained data of isotherm models were tested using different error function equations. The Freundlich,Tempkin and Langmuir isotherm models were best fitted to the experimental data of Melon-B, Melon-BO-NH_2 and Melon-BO-TETA, respectively. The adsorption rate was primarily controlled by pseudo-second–order rate model. Conclusively, the functional groups interactions are important for adsorption mechanisms and expected to control the adsorption process. The adsorption for the Melon-B, Melon-BO-NH_2 and Melon-BO-TETA could be explained for acid–base interaction and hydrogen bonding interaction.