http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Oliver Lassch,양지청 대한토목학회 2011 KSCE JOURNAL OF CIVIL ENGINEERING Vol.15 No.2
International Development (ID) actors are the International development organizations defined above by their common goal, the pursuit of the Millennium Development Goal (MDG). Corporate Social Responsibility (CSR) actors on the other hand are businesses with their most common needs survival, profitability, and economic benefit. We introduce the concept of CSR in construction management and development process. ID organizations targets are mainly socio-environmental, while businesses mostly act in their financial self-interest. There is a mutual interest by ID advocates and businesses in their involvement for the achievement of Millennium Development (MDGs) as an act of CSR. Improving the welfare level and increasing minimum standard of living condition are the main issues. This is the most basic clue to be derived from this paper. Building up on this we pioneered the idea of an active involvement of traditional ID actors in winning businesses with their extensive capabilities and resources for the achievement of the MDGs. This can only work, if their potential economic benefit from such an involvement can be made graspable. As tools for this task, we introduced 2 straight forward instruments for visualizing the economic value creation process while building up on Porter's and Kramer's ideas.
두 개의 중첩 레이저 빔을 사용하여 구리 헤어핀의 레이저 용접에서 스패터와 기공의 감소
Oliver Bocksrockera,Nicolai Spekera,Matthias Beraneka,Tim Hessea 한국레이저가공학회 2020 Laser Solutions Vol.23 No.12
헤어핀 기술은 e-Mobility 자동차 부문의 파워 트레인 효율성을 높이기 위한 e-Drive 제조에 새로운 수준의 자유를 제공한다. 구리 헤어핀의 레이저 용접에 대한 실험적 조사를 통해 소위 “2in1-fiber”를 이용한 중첩된 레이저 빔(BrightLine Weld)의 특정 빔 프로파일이 키홀을 안정화시켜 결과적으로 스패터와 기공을 감소시킨다는 것을 알아냈다. 스패터 정량화를 위해 프로세스의 고속 동영상이 사용되었다. 용접 중 기공 생성은 온라인 xRay-imaging을 통해 조사되었다. 관찰에 따르면, 중첩된 레이저빔이 사용될 경우 키홀의 크기가 넓어지는 것으로 나타났다. 그 결과, 키홀의 형태가 시간이 경과함에 따라 안정화되었다. 또한 키홀 형태 덕분에 증발된 물질의 증기를 수월하게 제거할 수 있다. 후자는 키홀이 부푸는 것을 억제하며 따라서 헤어핀 용접 프로세스 중에 스패터와 기공이 형성되는 것을 0에 가깝게 줄일 수 있다.
Neutralizing Bacterial Spores Using Halogenated Energetic Reactions
Oliver Mulamba,Emily M. Hunt,Michelle L. Pantoya 한국생물공학회 2013 Biotechnology and Bioprocess Engineering Vol.18 No.5
The fight against biological warfare has prompted investigation of the chemistry and exothermic energy from energetic material reactions as a means for the neutralization of bacterial spores. The interaction between energetic reactions containing biocides and spore forming bacteria is not well understood. The goal of this work is to fundamentally examine the mechanisms of neutralization for Bacillus thuringiensis utilizing a halogenated energetic material reaction. Spore neutralization is attributed to a thermal effect from the reaction heat and the associated chemical influence of the halogen gas (i.e., produced from combustion). Results show heat transfer in the spore enhances the effectiveness of the halogen gas in the neutralization process and that elevated temperatures increase spore permeability, facilitating gas penetration and accelerating spore neutralization. Based on experimental results, a mathematical model was developed to predict spore behavior during reaction exposure over varying time scales. In the millisecond range, the model showed that the coupled thermal-biocidal gas mechanism will require elevated temperatures of 360oC to produce 80% neutralization in tens of milliseconds while thermal conditions alone would require nearly 1,000oC for the same neutralization. These results provide molecular-level insights into the components underpinning biological processes leading to spore neutralization.
Oliver Berberich,Julia Blöhbaum,Stefanie Hölscher-Doht,Rainer H. Meffert,Jörg Teßmar,Torsten Blunk,Jürgen Groll 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.80 No.-
Tissue adhesives play an important role in clinical applications and may aid in the treatment of cartilagedefects for improved cartilage integration. However, many fail to satisfy the demand for adequateadhesive strength on wet tissue surfaces and to facilitate sufficient cell migration and extracellular matrix(ECM) deposition at the defect site. Utilizing poly(2-alkyl-2-oxazoline) (POx)-based polymers equippedwith mussel-inspired adhesion moieties and combining them with the natural wound sealantfibrinogen,we fabricated an adhesive biosynthethic hydrogel with tunable mechanical properties and improvedbonding strength. Degradation of the hydrogels could be adjusted by the ratio of amide to ester linkagesof the catecholic functional group at the POx side chain. In an in vitro disc/ring model for lateral cartilageintegration, a benefit in long-term integration was observed with enhanced degradation of the adhesivewithout the expense of bonding strength. Incorporation of degradable ester linkages in the polymerfacilitated cell invasion and strong deposition of cartilaginous ECM at the defect site. Overall, the resultssuggest that the presented injectable adhesive hydrogel, due to its easy tunability, holds great potentialfor cartilage defect treatment and other medical applications.