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노상도(Sang Do Noh),김건연(Gun Yeon Kim),박태근(Tae Keun Park),박영진(Young-jin Park),황인걸(In Gurl Hwang),정경훈(Kyung Hoon Chung) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Digital Manufacturing is a technology to facilitate effective product developments and agile productions by digital environments representing the physical and logical schema and the behavior of real manufacturing systems including manufacturing resources, environments and products. A digital factory as a well-designed and integrated environment is essential for successful applications of this technology. In this research, we constructed a sophisticated digital factory of an automotive company's general assembly shop by measuring and modeling through the parametric 3-D CAD. It is expected that this digital general assembly shop is useful for achieving great time and cost savings in many manufacturing preparation and planning activities for new car developments, such as a process/operation planning, a production and material flow analysis, a manufacturability analysis based on ergonomics, etc.
Complete prevention of blood loss with self-sealing haemostatic needles
Shin, Mikyung,Park, Sung-Gurl,Oh, Byung-Chang,Kim, Keumyeon,Jo, Seongyeon,Lee, Moon Sue,Oh, Seok Song,Hong, Seon-Hui,Shin, Eui-Cheol,Kim, Ki-Suk,Kang, Sun-Woong,Lee, Haeshin Nature Publishing Group 2017 NATURE MATERIALS Vol.16 No.1
Bleeding is largely unavoidable following syringe needle puncture of biological tissues and, while inconvenient, this typically causes little or no harm in healthy individuals. However, there are certain circumstances where syringe injections can have more significant side effects, such as uncontrolled bleeding in those with haemophilia, coagulopathy, or the transmission of infectious diseases through contaminated blood. Herein, we present a haemostatic hypodermic needle able to prevent bleeding following tissue puncture. The surface of the needle is coated with partially crosslinked catechol-functionalized chitosan that undergoes a solid-to-gel phase transition in situ to seal punctured tissues. Testing the capabilities of these haemostatic needles, we report complete prevention of blood loss following intravenous and intramuscular injections in animal models, and 100% survival in haemophiliac mice following syringe puncture of the jugular vein. Such self-sealing haemostatic needles and adhesive coatings may therefore help to prevent complications associated with bleeding in more clinical settings.
박영진(Yong-jin Park),황인걸(In Gurl Hwang),정경훈(Kyung Hoon Chuang),이강걸(Kang Kul Lee),허준(Jun Heo),노상도(Sang Do Noh) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
To ensure competitiveness in the modern automotive market, material arrangements and information managements should be performed concurrently with new car developments. In automotive general assembly shops, thus, new business workflows and supporting environments are inevitable to reduce the manufacturing preparation time in developing a new car in the manner of concurrent and collaborative engineering. Since complete material arrangements for a whole general assembly system is a huge and complex job, several planners should execute their planning jobs and share information. Therefore, each planner should provide others with his/her results with continuous on-line communication and cooperation. In this research, a web-based system for concurrent and collaborative material arrangements for automotive general assembly via 3D mock-up is developed. By using this system, savings in time and cost of material arrangements are possible, and the reliability of the planning result is improved.<br/>