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Optical sensitivity of DNA-dispersed single-walled carbon nanotubes within cement composites under mechanical load
Jin Hee Kim, Inkyu Rhee, Yong Chae Jung, Sumin Ha, Yoong Ahm Kim 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 12 90-96 (7 pages)
In this regard, extensive studies have been conducted on the addition of nanosized materials (e.g., silica, titanium oxide, carbon nanotubes [CNTs] and graphenes) to cement composites [2-16]. This is because nanomaterials can restrict the growth of nanosized cracks in cement composites to microsized ones. Among the various nanomaterials, one-dimensional CNTs have been intensively exam- ined as... that hydrophilic functional groups within the DNA strongly retarded the hydration reaction. The optimum amount of DNA with respect to the cement was found to be 0.05 wt%. The strong Raman signals coming from the SWCNTs entrapped in the cement composites enabled us to understand their dispersion state within the cement as well as their interfacial interaction. The G and G’ bands of the SWCNTs sensitively varied under mechanical compression. Our results indicate that an extremely small amount of... -
A Review on Thermal Conductivity of Polymer Composites Using Carbon-Based Fillers : Carbon Nanotubes and Carbon Fibers
Jinho Hong, Dong Wha Park , Sang Eun Shim 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2010, Vol.11 No.4 12 347-356 (10 pages)
of particulate composites is not sensitive to the thermal conductivity value of the filler, provided that the ratio of the filler to matrix thermal conductivity is large [50]. To increase the interfacial interaction between the CNF and the polymer matrix, acid treatment of the fibers has been attempted [51]. 3.2. Experimental review on thermal conductivity of CNF- polymer composites Kuriger et al.... -
High Temperature Fiber Fragmentation Characteristics of SiC Single-Fiber Composite With Titanium Matrices
Matikas. Theodore E. 한국복합재료학회 Advanced composite materials : the official journal of the Japan Society of Composite Materials and 13 Pages
한국복합재료학회 Advanced composite materials : the official journal of the Japan Society of Composite Materials and 2008, Vol.17 No.1 75-87 (13 pages)
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Bone inducing effect by recombinant human bone morphogenetic protein-2 and collagen carrier in maxillary sinus of the rabbit
Hyo-Jeong Son, Yeong-Wook Kim, Hong-Jun Hwang, Hyoun-Chull Kim, Sang-Chull Lee, Seung-Hwan O, Jingo Kusukawa, Rhuichiro Tanoue 대한치과이식임플란트학회 Journal of Dental Implant Research 8 Pages
대한치과이식임플란트학회 Journal of Dental Implant Research 2011, 제 30권 2호 2 115-122 (8 pages)
Rev 2000;43:65-92. 16. Marden LJ, Hollinger JO, Chaudhari A, Turek T, Schaub RG, Ron E. Recombinant human bone morphogenetic protein-2 is superior to demineralized bone matrix in repairing craniotomy defects in rats. J Biomed Mater Res 1994;28:1127-38. 17. Mayer M, Hollinger J, Ron E, Wozney J. Maxillary alveo- lar cleft repair in dogs using recombinant human bone morphogenetic protein-2 and... Purpose: The aim of this study was to evaluate the bone inducing effects on the maxillary sinus of rabbits using the first commercial rhBMP-2 in South Korea and to investigate the influence of supplementation with collagen sponges. Materials and Methods: Two circular windows (diameter, about 4 mm) was formed in the nasal bone of rabbit The preparated maxillary sinuses were filled with collagen sponges (Terudermis?) alone in three groups. In the other three groups, the preparated maxillary... -
The study of osteoinductive effect as the variant rhBMP-2 application in the dorsal subcutaneous tissue of white rat
Yoon- Seon Keum, Hyo-Jeong Son, Seung- Cheol Woo, Jang-Yeol Lee, Hyoun-Chull Kim, Sang-Chull Lee, Jingo Kusukawa 대한치과이식임플란트학회 Journal of Dental Implant Research 7 Pages
대한치과이식임플란트학회 Journal of Dental Implant Research 2010, 제 29권 1호 7 47-53 (7 pages)
e.g. calcium phosphate cement, porous hydroxyapatite (HA), or hydroxyapatite/tricalcium phosphate (TCP) as blocks and granules; bone or cartilage derived materials, e.g. inactive collagenous bone matrix and bovine bone mineral; and composites, e.g. dentine matrix powder/chondroitin-6-sulfate/ type I collagen, TCP or coralline HA/type IV collagen, and poly(a-hydroxy acid)/ carboxymethylcellulose or... bone defect area has been carried out, also the bone morphogenetic protein(BMP) has been taken notice of osteoinduction material. Urist (1965) was the first to report the presence of bone morphogenetic protein (BMP) that was detected by transplantation of decalcified bone matrix into an intramuscular site, where it induced ectopic ossification. The term “bone morphogenetic protein”(BMP) was introduced to describe the substance(s) in the demineralized bone matrix responsible for the phenomenon. -
Applications of carbon-based materials in solid phase micro-extraction: a review
Jian Guo, Soo-Jin Park, Long-Yue Meng, Xinghua Jin 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 2 10-17 (8 pages)
carbon material composites are discussed. Key words: surface treatment, carbon, coating, adsorption 1. Introduction Sample pretreatment is an important part of the analysis process and has been the focus of chemical analysis. The vast majority of sample matrices that need to be analyzed have complex compositions, which require increased complexity for the processing and analysis of samples and... to different extraction results. Among existing materials, carbon-based materials are still attracting attention from scientists due to their excellent physical and chemical properties as well as their modifiable surfaces, which could enhance the adsorption effects of SPME fiber. This review introduces the preparation methods and applications of different kinds of carbon-based material coatings on fibers. In addition, directions for future research on carbon material composites are discussed. -
Hole quality assessment of drilled CFRP and CFRP-Ti stacks holes using polycrystalline diamond (PCD) tools
Dave Kim, Aaron Beal, Kiweon Kang, Sang-Young Kim 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2017, Vol.23 1 1-8 (8 pages)
92, 1246 (2010). https://doi.org/10.1016/j.compstruct.2009.10.010. [4] Brinksmeier E, Janssen R. Drilling of multi-layer composite mate- rials consisting of carbon fber reinforced plastics (CFRP), titanium and aluminum alloys. CIRP Ann Manuf Technol, 51, 87 (2002). https://doi.org/10.1016/S0007-8506(07)61472-3. [5] Kim D, Ramulu M. Study on the drilling of titanium/graphite hy- brid composites.... Polycrystalline diamond (PCD) tools possessing high hardness and abrasive wear resistance are particularly suited for drilling of carbon fiber reinforced plastic (CFRP) composites, where tool life and consistent hole quality are important. While PCD presents superior performance when drilling CFRP, it is unclear how it performs when drilling multi-stack materials such as CFRP-titanium (Ti) stacks. This comparative study aims to investigate drilling of a Ti plate stacked on a CFRP panel when...