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A potentiometric cobalt-based phosphate sensor based on screen-printing technology
Lei ZHU,Xiaohong ZHOU,Hanchang SHI
《环境科学与工程前沿(英文)》 2014年 第8卷 第6期 页码 945-951 doi: 10.1007/s11783-013-0615-z
关键词: phosphate cobalt screen-printing technology electroplate wastewater
Luosi WEI, Zongxia JIAO
《机械工程前沿(英文)》 2009年 第4卷 第2期 页码 184-191 doi: 10.1007/s11465-009-0034-9
关键词: machine vision visual location solder paste printing VisionPro
null
《医学前沿(英文)》 2013年 第7卷 第4期 页码 506-509 doi: 10.1007/s11684-013-0294-y
This study aimed to investigate patient dose in diagnostic screen-film radiographic examinations in the city of Lhasa, China. Seven out of the twenty-six hospitals registered with the Lhasa Health Bureau were included in the investigation. The entrance surface air Kerma (ESAK) of seven conventional screen-film radiology X-ray equipment in these hospitals was measured with a QA dosimeter in September 2012. The X-ray examinations were divided into three categories: PA (posterior-anterior) chest, upper/lower limb, and AP (anterior-posterior) lumbar spine. For each category, ESAKs were calculated and analyzed. The mean ESAK was 0.6 mGy for PA chest, 0.3 mGy for upper/lower limb, and 1.8 mGy for AP lumbar spine. In addition, the mean ESAK value recorded for PA chest X-ray examinations exceeded the corresponding value recommended by the International Atomic Energy Agency (0.4 mGy).
关键词: radiation dosage radiology radiation protection radiography/statistics & numerical data
面向医学应用的3D 打印技术现状综述 Review
严倩,董汉华,苏瑾,韩建华,宋波,魏青松, 史玉升
《工程(英文)》 2018年 第4卷 第5期 页码 729-742 doi: 10.1016/j.eng.2018.07.021
器官移植供体短缺一直是世界各国医学界面临的重大难题之一。传统方法不可避免地存在并发症、二次损伤和供体来源有限等潜在问题。3D 打印技术具有解决目前这些问题的潜力,可用于快速制造个性化组织工程支架、细胞原位修复组织缺陷,甚至直接打印组织和器官。打印的植入体和器官不仅与患者的受损组织完美匹配,而且能够调控材料微结构和细胞排列,促进细胞生长和分化。因此,这类植入体有望实现组织修复,甚至最终解决供体短缺问题。本文总结了3D 打印在医学领域相关研究和最新进展的四个层次,介绍了不同类型的生物医用材料,并讨论了医学应用中3D 打印所需材料和构建体外细胞质基质(ECM)存在的问题和未来的发展方向。
《结构与土木工程前沿(英文)》 页码 1295-1309 doi: 10.1007/s11709-023-0999-1
关键词: particle-based simulation liquid bridge force rheological property 3D printing mortar extrudability constructability
《能源前沿(英文)》 2022年 第16卷 第4期 页码 542-547 doi: 10.1007/s11708-022-0834-8
陶瓷喷墨打印增材制造技术 Review
Brian Derby
《工程(英文)》 2015年 第1卷 第1期 页码 113-123 doi: 10.15302/J-ENG-2015014
陶瓷喷墨打印是一种基于微滴累加的成形技术,典型的微滴体积为10~100 pL。实现微滴累加成形的关键是开发稳定的陶瓷墨水,合适的墨水需要满足由雷诺数和韦伯数定义的流变特性参数空间。在微滴累加成形过程中,微滴首先与成形面碰撞变形并消耗动能,然后在毛细管力作用下铺展并达到平衡状态。已经可以确定的是打印过程中微滴相互作用并形成一维线性特征的机理,但是对二维和三维结构成形机理的认识还处于较低水平,成形二维面的稳定性低于成形一维线性结构。多数情况下,墨水通过蒸发固化,微滴碰撞基体所产生的“咖啡环”缺陷需要通过固化工艺加以控制。已经有大量文献报道了使用喷墨打印技术成形各种类型小型陶瓷零件的成功案例。作为一种未来的制造技术,陶瓷喷墨打印技术有广阔的应用前景。本综述的目的是探索陶瓷喷墨打印技术未来潜在的研究领域,加强对这种制造方法的理解。
对双层组件4D打印可逆性的初步研究 Article
Amelia Yilin Lee, Jia An, Chee Kai Chu, Yi Zhang
《工程(英文)》 2019年 第5卷 第6期 页码 1159-1170 doi: 10.1016/j.eng.2019.09.007
增材制造的快速发展和形状记忆聚合物材料的进步推动了四维(4D)打印技术的进展。随着设计方面的不断改进,逐渐证明有可能实现可逆4D打印或双向4D打印。这项技术将完全消除对人为干预的需要,因为编程完全由外部刺激驱动,这使得4D打印部件可以在多个周期内启动。本研究提出了一种新的可逆4D打印驱动方法,其中弹性体的溶胀和热量用于编程阶段,以及热量用于恢复阶段。本研究的主要重点在于自驱动设计这一步骤。为了实现对弯曲的控制,已经开发了一种简单的预测模型用于研究曲率。此外,为了更好地了解模型对曲率的预测程度,对参数、温度和弹性体厚度也进行了研究。采用这种方式理解曲率可以提供对可逆4D打印结构的高度控制。
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《医学前沿(英文)》 2012年 第6卷 第4期 页码 428-435 doi: 10.1007/s11684-012-0232-4
The increasing prevalence of childhood overweight and obesity has been associated with an increased risk for cardiovascular disease (CVD). While several studies examined the effect of single behaviors such as physical activity (PA), sedentary behavior or diet on CVD risk, there is a lack of research on combined associations, specifically in children. Therefore, the purpose of this study was to examine the joint association of PA or screen time (ST) and diet on CVD risk factors in children. PA, ST and diet were assessed via questionnaire in 210 fifth grade students (age: 10.6±0.4 years). The healthy eating index (HEI) was subsequently calculated as indicator for diet quality. Height, weight, % body fat, and resting blood pressure were measured according to standard procedures and blood samples obtained via fingerprick were assayed for blood lipids. Total cholesterol HDL ratio (TC:HDL), mean arterial pressure (MAP), and % body fat were used as indicators of CVD risk. 55% of children did not meet current PA recommendations on at least 5 days/week and 70% exceeded current recommendations for ST. Further, only 2.5% possessed a “good” diet (HEI>80). There was no significant association of PA or ST and diet on CVD risk score. Neither TC:HDL, MAP, and % body fat nor the total CVD risk score was significantly correlated with diet, PA, or ST. Children in the high PA group, however, had significantly better diet scores. Despite the fact that self-reported PA, ST, or dietary intake were not directly related to CVD risk in this sample, higher activity levels were associated with a healthier diet and lower ST indicating an overall healthier lifestyle of this subgroup.
关键词: exercise sedentary behavior metabolic syndrome health behavior adolescents TV time healthy eating index
《环境科学与工程前沿(英文)》 2021年 第15卷 第5期 doi: 10.1007/s11783-021-1390-x
•PSBF performed better than PAC and PAM in CODCr removals.
关键词: Practical wastewater treatment Commercial coagulant/flocculant Secondary coagulation-flocculation process Chemical oxygen demand Coagulation-flocculation mechanism
Process development for green part printing using binder jetting additive manufacturing
Hadi MIYANAJI, Morgan ORTH, Junaid Muhammad AKBAR, Li YANG
《机械工程前沿(英文)》 2018年 第13卷 第4期 页码 504-512 doi: 10.1007/s11465-018-0508-8
Originally developed decades ago, the binder jetting additive manufacturing (BJ-AM) process possesses various advantages compared to other additive manufacturing (AM) technologies such as broad material compatibility and technological expandability. However, the adoption of BJ-AM has been limited by the lack of knowledge with the fundamental understanding of the process principles and characteristics, as well as the relatively few systematic design guideline that are available. In this work, the process design considerations for BJ-AM in green part fabrication were discussed in detail in order to provide a comprehensive perspective of the design for additive manufacturing for the process. Various process factors, including binder saturation, in-process drying, powder spreading, powder feedstock characteristics, binder characteristics and post-process curing, could significantly affect the printing quality of the green parts such as geometrical accuracy and part integrity. For powder feedstock with low flowability, even though process parameters could be optimized to partially offset the printing feasibility issue, the qualities of the green parts will be intrinsically limited due to the existence of large internal voids that are inaccessible to the binder. In addition, during the process development, the balanced combination between the saturation level and in-process drying is of critical importance in the quality control of the green parts.
关键词: binder jetting additive manufacturing green part process optimization process development
王磊,卢秉恒
《中国工程科学》 2022年 第24卷 第4期 页码 202-211 doi: 10.15302/J-SSCAE-2022.04.018
Defect passivation on cast-mono crystalline screen-printed cells
Alison WENHAM,Lihui SONG,Malcolm ABBOTT,Iskra ZAFIROVSKA,Sisi WANG,Brett HALLAM,Catherine CHAN,Allen BARNETT,Stuart WENHAM
《能源前沿(英文)》 2017年 第11卷 第1期 页码 60-66 doi: 10.1007/s11708-016-0443-5
关键词: silicon solar cell dislocation cast-mono laser hydrogen passivation
增材制造(3D打印)发展趋势 Perspective
卢秉恒, 李涤尘, 田小永
《工程(英文)》 2015年 第1卷 第1期 页码 85-89 doi: 10.15302/J-ENG-2015012
增材制造又称为3D打印,在过去30年间取得了快速发展并展示出前所未有的发展潜力。同时,这项发展潜力巨大的技术对传统工业也产生了不可估量的影响。3D打印技术将会推动生产模式的变革,通过实现5个“任意”的工艺发展,将会为制造行业带来一个以定制化制造为特征的新时代。3D打印的技术进步及其与传统制造工艺的融合,将推动制造业在材料研发、产品设计、生产工艺等方面进一步创新发展。最终,3D打印技术将与等材制造、减材制造形成三足鼎立局面,共同分享整个社会的制造业价值。
Development of lunar regolith-based composite for - 3D printing via high-pressure extrusion system
《机械工程前沿(英文)》 2023年 第18卷 第2期 doi: 10.1007/s11465-022-0745-8
关键词: in-situ resource utilization melt extrusion molding lunar regolith-based composites mechanical properties additive manufacturing
标题 作者 时间 类型 操作
A potentiometric cobalt-based phosphate sensor based on screen-printing technology
Lei ZHU,Xiaohong ZHOU,Hanchang SHI
期刊论文
Research and application of visual location technology for solder paste printing based on machine vision
Luosi WEI, Zongxia JIAO
期刊论文
An investigation on patient dose in screen-film diagnostic radiology in Lhasa City, Xizang Autonomous
null
期刊论文
forces on rheological properties, and resulting extrudability and constructability of three-dimensional printing
期刊论文
Liquid metal printing opening the way for energy conservation in semiconductor manufacturing industry
期刊论文
Joint association of physical activity/screen time and diet on CVD risk factors in 10-year-old children
null
期刊论文
Flocculation behaviors of a novel papermaking sludge-based flocculant in practical printing and dyeing
期刊论文
Process development for green part printing using binder jetting additive manufacturing
Hadi MIYANAJI, Morgan ORTH, Junaid Muhammad AKBAR, Li YANG
期刊论文
Defect passivation on cast-mono crystalline screen-printed cells
Alison WENHAM,Lihui SONG,Malcolm ABBOTT,Iskra ZAFIROVSKA,Sisi WANG,Brett HALLAM,Catherine CHAN,Allen BARNETT,Stuart WENHAM
期刊论文