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Preparation and evaluation of enrofloxacin microspheres and tissue distribution in rats
Fan Yang, Jijun Kang, Fang Yang, Zhensheng Zhao, Tao Kong, Zhenling Zeng 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2015, 제 16권 제 2호 4 157-164 (8 pages)
of ENR from the microspheres were fitted using zero- and first-order kinetics along with Higuchi, Weibull, Baker-Lonsdale, Hixon-Crowell, and Riger-Peppas models. ..PAGE:3 Preparation and evaluation of enrofloxacin microspheres 159 www.vetsci.org Assessment of ENR-MIC tissue distribution One hundred and fifty-six healthy rats were equally divided into two groups. Each group was further divided... New enrofloxacin microspheres were formulated, and their physical properties, lung-targeting ability, and tissue distribution in rats were examined. The microspheres had a regular and round shape. The mean diameter was 10.06 μm, and the diameter of 89.93% of all microspheres ranged from 7.0 μm to 30.0 μm. Tissue distribution of the microspheres was evaluated along with a conventional enrofloxacin preparation after a single intravenous injection (7.5 mg of enrofloxacin/kg bw). The results... -
Effect of the surface modification using MWCNTs with different L/D by two different methods of deposition on the IFSS of single carbon fiber-epoxy resin composite
Minerva L. Herrera-Sosa, Alex Valadez-Gonz?lez, Humberto V?zquez-Torres, Pierre G. Mani-Gonz?lez, Pedro J. Herrera-Franco 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 3 18-27 (10 pages)
102.12 eV was observed, indicating that the silane was present. It was also noticed that the nitrogen peak decreased as the surface treat- parameter Weibull distribution, given by: (2) where d is the fber diameter and σf is the fber tensile strength, α and β are the shape and scale parameters of the Weibull distribution of (Lc/D), and Γ is the gamma function. This test was performed using... Multiwall carbon nanotubes (MWCNT) with two different (L/D) aspect ratios (7±2 μm/140±30 nm and 0.5?2 μm/8?15 nm) were surface treated using nitric acid (HNO3) and polyethyleneimine (PEI) prior to their deposition on carbon fibers (CF). Before the hierarchical reinforcement with CF-MWCNT, the CFs were treated with 3-glycidoxypropyltrimethoxysilane, a coupling agent (Z6040) and with poly(amidoamine) (PAMAM) a dendrimer containing an ethylenediamine core and amine surface groups. The MWCNT... -
Preparation and characterization of carbon fiber-reinforced thermosetting composites: a review
Fan-Long Jin, Soo-Jin Park 한국탄소학회 Carbon Letters 11 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.2 1 67-77 (11 pages)
the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/ by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Preparation and characterization of carbon fber-reinforced thermosetting composites: a review Fan-Long Jin and Soo-Jin Park KCS Korean Carbon Society... Carbon fibers (CFs) have a unique combination of properties which allow them to be widely used as reinforcing materials in advanced polymer composites. The mechanical properties of CF-reinforced polymer composites are governed mainly by the quality of interfacial adhesion between the CFs and the polymer matrix. Surface treatments of CFs are generally carried out to introduce chemical functional groups on the fiber surfaces, which provide the ability to control the surface characteristics of CFs.... -
Graphitization of PAN-based carbon fibers by CO₂ laser irradiation
Liangbo Yao, Weimin Yang, Sanyang Li, Yang Sha, Jing Tan, Ying An, Haoyi Li 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 13 97-102 (6 pages)
of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/ by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Study on properties of eco-friendly reduction agents for the reduced graphene oxide method Young-il Na, Young Il Song, Sun Woo Kim and Su-Jeong Suh... of scanning electron microscopy revealed that the surface of irradiated CFs was rougher than that of the unirradiated ones and there were scale-like small fragments that had peeled off from the fibers. The tensile modulus increased by 17.51% and the Weibull average tensile strength decreased by 30.53% after being irradiated by a laser. These results demonstrate that the laser irradiation was able to increase the graphitization degree of the CFs, which showed some properties comparable to graphit... -
A Model to Explain Temperature Dependent Systemic Infection of Potato Plants by Potato virus Y
한국식물병리학회 The Plant Pathology Journal 6 Pages
한국식물병리학회 The Plant Pathology Journal 2017, 33권 2호 12 206-211 (6 pages)
for a given temperature. Three-parameter Weibull functions were used to create a systemic infection distribution model that incorporated the stochastic aspects of systemic infection. Variable time of appearance of systemic infection was normalized at the different temperatures to the PVY-infected plant age (Wagner et al., 1984). This was useful for predicting the first day of appearance of... degree days. A systemic infection model was constructed based on experimental data, using the infection rate (Lactin-2 model) and the infection distribution (three-parameter Weibull function) models, which accurately described the completion rate curves to systemic infection and the cumulative distributions obtained in the PVY-potato system, respectively. Therefore, this model was useful to predict the progress of systemic infections by PVY in potato plants, and to construct the epidemic models. -
전력케이블용 절연재료의 열화특성 및 수명진단에 관한 연구
박홍태, 김경석, 남창우, 이규철 한국전기전자재료학회 전기전자재료학회논문지 7 Pages
한국전기전자재료학회 전기전자재료학회논문지 1999, Vol.12 No.1 11-17 (7 pages)
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Nonlinear Regression Analysis to Determine Infection Models of Colletotrichum acutatum Causing Anthracnose of Chili Pepper Using Logistic Equation
한국식물병리학회 The Plant Pathology Journal 8 Pages
한국식물병리학회 The Plant Pathology Journal 2010, 26권 1호 3 17-24 (8 pages)
79:380-383. Park, K. S. and Kim, C. H. 1992. Identification, distribution, and etiological characteristics of anthracnose fungi of red pepper in Korea. Korean J. Plant Pathol. 8:61-69. Peres, N. A., Timmer, L. W., Adaskaveg, J. E. and Correll, J. C. 2005. Lifestyles of Colletotrichum acutatum. Plant Dis. 89:784-796. Peterson, M. E., Eisenthal, R., Danson, M. J., Spence, A. and Daniel, R. M. 2004.... A logistic model for describing combined effects of both temperature and wetness period on appressorium formation was developed using laboratory data on percent appressorium formation of Colletotrichum acutatum. In addition, the possible use of the logistic model for forecasting infection risks was also evaluated as compared with a first-order linear model. A simplified equilibrium model for enzymatic reactions was applied to obtain a temperature function for asymptote parameter (A) of logistic... -
Renewable Energy Education: An Example of Implementation
Park DoYong, Jo Jin 에너지기후변화교육학회 에너지기후변화교육 17 Pages
에너지기후변화교육학회 에너지기후변화교육 2011, 제 1권 제 1호 10 89-105 (17 pages)
of the role of height and wind turbulence in predicting energy resources, and inspect wind regimes from various parts of the country. Principles like average wind speed, Weibull curves, and wind turbine power curves are discussed in class and applied in activites. At the end of this unit, students are able to answer the following questions: How does turbine height impact the energy produced by... The purpose of this paper is three-fold: First, given the limited energy resources worldwide, the world is concerned about the depletion of fossil fuels and makes an orchestrated effort to discover alternative energy resources across countries. Thus, with the relevant review of literature, the paper stressed the importance of energy education in K-12. Second, with a lack of appropriate energy education curriculums and activities for renewable energy education, this paper introduced an...