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CO₂, Er:YAG, Er,Cr:YSGG 레이저를 임프란트 표면에 조사시 표면성상의 변화 및 열 변화에 관한 연구
강만석, 김현철, 이장렬 대한치과이식임플란트학회 Journal of Dental Implant Research 7 Pages
대한치과이식임플란트학회 Journal of Dental Implant Research 2005, 제 24권 2호 2 14-20 (7 pages)
1992 May;63(5):473-6 4. Schwarz F, Rothamel D, Sculean A, Georg T, Scherbaum W, Becker J. Effects of an Er:YAG laser and the Vector ultrasonic system on the biocompatibility of titanium implants in cultures of human osteoblast-like cells. Clin Oral Implants Res. 2003 Dec;14(6):784-92. 5. Schwarz F, Bieling K, Sculean A, Herten M, Becker J.[Treatment of periimplantitis with laser or ultrasound. A... 임프란트 실패의 중요한 원인인 임프란트 주위염은 크게 교합력, 치태세균이나 치석의 축적 등과 같은 국 소적 요인과 전신질환이나 신체방어력의 약화 등과 같은 전신적 요인에 의해 단독적 또는 복합적으로 발 생된다. 임프란트 주위염은 임프란트 주위 치은의 염 증을 동반한 임프란트 주위골의 임상적, 방사선적인 상실을 가지는 임상적인 증상의 표현이다. -
Impact of a Recombinant Biocontrol Bacterium, Pseudomonas fluorescens pc78, on Microbial Community in Tomato Rhizosphere
한국식물병리학회 The Plant Pathology Journal 9 Pages
한국식물병리학회 The Plant Pathology Journal 2016, 32권 2호 7 136-144 (9 pages)
plants, tomato plants were harvested one month after pc78-48 application. The harvested tomato plants were thoroughly washed with tap water, any surface attached microbes were removed us- ing an ultrasonic cleaner (Branson 5510, Branson, USA), the surface was sterilized with 10% bleach for 15 min, and then extensively washed with sterile water. Total plant DNA was extracted using the manual... Pseudomonas fluorescens pc78 is an effective biocontrol agent for soil-borne fungal diseases. We previously constructed a P43-gfp tagged biocontrol bacteria P. fluorescens pc78-48 to investigate bacterial traits in natural ecosystem and the environmental risk of genetically modified biocontrol bacteria in tomato rhizosphere. Fluctuation of culturable bacteria profile, microbial community structure, and potential horizontal gene transfer was investigated over time after the bacteria treatment to... -
Phyllosticta musarum Infection-Induced Defences Suppress Anthracnose Disease Caused by Colletotrichum musae in Banana Fruits cv Embul
한국식물병리학회 The Plant Pathology Journal 10 Pages
한국식물병리학회 The Plant Pathology Journal 2013, 29권 1호 9 77-86 (10 pages)
an ultrasonic homogenizer (ULTRA TURRAX ® T25 basic, IKA LABORTECHNIK) at 11,000 rpm. The homogenate was clarified by centrifugation at 6000 g (Sigma 3K30 Laboratory centrifuge) and 4 oC for 10 min. The supernatant was used for enzyme assay. Agarose- Glycol chitin substrate was prepared (Trudel and Asselin, 1989) and poured in to petri dishes. Aliquots (10 μ extract or standard chitinase (from... to have a direct suppressive effect on C. musae as conidia of C. musae germinate on both freckled and non-freckled fruit forming quiescent infections. Our investigations have shown that P. musarum infection induced several defence responses in fruit including the accumulation of five phytoalexins, upregulation of chitinase and β-1,3-glucanase, phenylalanine ammonia lyase (PAL) activity and cell wall lignification. 1H and 13C NMR spectral data of one purified phytoalexin compared closely with... -
Study of complex electrodeposited thin film with multi-layer graphene-coated metal nanoparticles
Young-Lae Cho, Jung-woo Lee, Chan Park, Young-il Song, Su-Jeong Suh 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2017, Vol.21 8 68-73 (6 pages)
the electrolyte so- lution using ultrasonic agitation for 10 min. Before and during electrodeposition, the bath was agitated using a magnetic stirrer at 80 rpm. The bare-electrodeposited copper thin flm (BETF) and the CETF containing 300 ppm MGCNs were both ~4.8 μm thick. Electrochemical impedance spectroscopy (EIS) is an effec- tive technique for probing the features of chemically modifed... We have demonstrated the production of thin films containing multilayer graphene-coated copper nanoparticles (MGCNs) by a commercial electrodeposition method. The MGCNs were produced by electrical wire explosion, an easily applied technique for creating hybrid metal nanoparticles. The nanoparticles had average diameters of 10?120 nm and quasispherical morphologies. We made a complex-electrodeposited copper thin film (CETF) with a thickness of 4.8 μm by adding 300 ppm MGCNs to the electrolyte... -
Adsorptive removal of atmospheric pollutants over Pyropia tenera chars
Heejin Lee, Rae-su Park, Hyung Won Lee, Yeojin Hong, Yejin Lee, Sung Hoon Park, Sang-Chul Jung, Kyung-Seun Yoo, Jong-Ki Jeon, Young-Kwon 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2016, Vol.19 10 79-88 (10 pages)
kinetic study of ultrasonic assisted transesterifcation of waste cooking oil over sulfonated car- bon catalyst derived from cyclodextrin. J Ind Eng Chem, 32, 128 (2015). http://dx.doi.org/10.1016/j.jiec.2015.08.008. [32] Anirudhan TS, Shainy F. Adsorption behaviour of 2-mer- captobenzamide modifed itaconic acid-grafted-magnetite nanocellulose composite for cadmium(II) from aqueous solutions. J... As a replacement for activated carbon, biochar was synthesized and used for the adsorptive removal of formaldehyde and nitrogen oxide. Biochar was produced from the fast pyrolysis of the red marine macro alga, Pyropia tenera. The P. tenera char was then activated with steam, ammonia and KOH to alter its characteristics. The adsorption of formaldehyde, which is one of the main indoor air pollutants, onto the seaweed char was performed using 1-ppm formaldehyde and the char was activated using a... -
Carbon rich fly ash and their nanostructures
Numan Salah, Sami S. Habib, Zishan H. Khan, Ahmed Alshahrie, Adnan Memic, Attieh A. Al-ghamdi 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2016, Vol.19 3 23-31 (9 pages)
et al. [34] synthesized graphene lay- ers using the ultrasonic dispersion of graphite fakes. Ultrasound treatment was used to study the decrease of the granulometry of graphite, due to the cavitation, which allows erosion by separat- ing grains [35]. Belviso et al. [36] studied the effect of ultra- sonic treatment on zeolite synthesized from coal fy ash. They reported that the application of... Carbon rich fly ash was recently reported to have compositions that are ideal for use as a precursor and catalyst for carbon nanotube growth. This fly ash powder is mostly composed of pure carbon, predominantly present as sp2. In this work, the effect of sonication time on the morphology and structural properties of carbon rich fly ash particles is reported. The obtained results show that ultrasound treatment is an effective tool for producing ultrafine particles/fragments with higher porosity,... -
Nanoporous graphene oxide membrane and its application in molecular sieving
S. Mahmood Fatemi, Masoud Arabieh, Hamid Sepehrian 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.3 4 183-191 (9 pages)
[3] De Vos RM, Verweij H. High-Selectivity, High-fux silica membranes for gas separation. Science, 279, 1710 (1998). http:// dx.doi.org/10.1126/science.279.5357.1710. [4] Shifett MB, Foley HC. Ultrasonic deposition of high-selectivity nanoporous carbon membranes. Science, 285, 1902 (1999). http:// dx.doi.org/10.1126/science.285.5435.1902. [5] Park HB, Jung CH, Lee YM, Hill AJ, Pas SJ, Mudie ST,... Gas transport through graphene-derived membranes has gained much interest recently due to its promising potential in filtration and separation applications. In this work, we explore Kr-85 gas radionuclide sequestration from natural air in nanoporous graphene oxide membranes in which different sizes and geometries of pores were modeled on the graphene oxide sheet. This was done using atomistic simulations considering mean-squared displacement, diffusion coefficient, number of crossed species of... -
Hierarchical porous carbon nanofibers via electrospinning
Aikifa Raza, Jiaqi Wang, Shan Yang, Yang Si, Bin Ding 한국탄소학회 Carbon Letters 14 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.1 1 1-14 (14 pages)
their peak currents. The lowest detection limits of DA, UA, and AA were observed at 0.2, 0.7, 15 μM, respectively. Similarly rhodium nanoparticle- loaded CNFs were dispersed in DMF under ultrasonic agitation and then cast on the surface of a pretreated pyrolytic graphite electrode. The as-modifed electrode established excellent elec- trocatalytic activity toward hydrazine oxidation [82]. In a... Carbon nanofibers (CNFs) with diameters in the submicron and nanometer range exhibit high specific surface area, hierarchically porous structure, flexibility, and super strength which allow them to be used in the electrode materials of energy storage devices, and as hybrid-type filler in carbon fiber reinforced plastics and bone tissue scaffold. Unlike catalytic synthesis and other methods, electrospinning of various polymeric precursors followed by stabilization and carbonization has become a... -
Modifications of mechanical, thermal, and electrical characteristics of epoxy through dispersion of multi-walled carbon nanotubes in supercritical carbon dioxide
MGH ZAIDI, Sanjeev Joshi, Manoj Kumar, Deepak Sharma, Ashwin Kumar, Sarfaraz Alam, Prakash Sah 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2013, Vol.14 No.4 4 218-227 (10 pages)
ultrasonic treatment. J Nanotechnol, 2012, 545930 (2012). http://dx.doi.org/10.1155/2012/545930. [31] Jimenez-Suarez A, Campo M, Gaztelumendi I, Markaide N, Sanchez M, Urena A. The infuence of mechanical dispersion of MWCNT in epoxy matrix by calendering method: batch method versus time controlled. Composites B, 48, 88 (2013). http://dx.doi. org/10.1016/j.compositesb.2012.12.011. [32] Prolongo... -
Dielectrophoretic Alignment and Pearl Chain Formation of Single-Walled Carbon Nanotubes in Deuterium Oxide Solution
Dong Su Lee, Yung Woo Park 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2012, Vol.13 No.4 9 248-253 (6 pages)
high pressure deposition carbon monoxide method in the experiment [25]. Af- ter 10 min of ultrasonic agitation, the sample was centrifuged at 50 000 g for 30 min and the upper 80% of the solution was care- fully taken. The centrifugation process is required for extracting SWCNT bundles. The specifc gravity of an individual SWCNT wrapped with SDS (SWCNT-SDS) is around 1.0 g/cm 3 and that of a...