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881.

8주간의 격렬한 유산소 운동이 SOD 및 pro-apoptotic 유전인자에 미치는 영향

윤병곤, 조원제, 전용균, 이동복, 윤성준, 이지영, 박인태 한국웰니스학회 한국웰니스학회지 6 Pages

한국웰니스학회 한국웰니스학회지 2009, 제 4권 1호 8 87-92 (6 pages)

윤병곤, 조원제, 전용균, 이동복, 윤성준, 이지영, 박인태 저
...
- 3,000원
우리 몸은 ROS의 유해성으로부터 조직을 방어하 는 항산화효소(antioxidant enzyme)가 존재하며(Ji, 1993), 그 중 우리 몸에서 만들어지며 가장 중요한 역할을 하는 것이 SOD(superoxide dismutase)이다. 이것은 사립체(mitochondria)에서 생성되어 superoxide radical을 과산화수소(H2O2)와 물(H20) 로 분해한다(정해영, 1999). ROS는 세포고사 유발과 관계가 있음이 밝혀지고 있으며(Chhalliyil, Natarajan, & Govindaswamy, 2000), 산화스트레스에 의해 유발되는 세포고사 동안에 superoxide와 지질과산화(lipid peroxidation)는...
882.

영어 수업시수 증배 결정의 맥락과 영어성취도에 미치는 영향

김경년, 김형기 한국교육학회 교육학연구 27 Pages

한국교육학회 교육학연구 2012, 50권 3호 1 1-27 (27 pages)

김경년, 김형기 저
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- 5,600원
본 연구는 학교자율화 정책으로 학교의 교육과정 편성권이 확대되고 있는 시점에서 서울지역 일반 계 고등학교 영어교과의 수업시수 증배결정의 정책적 맥락과 수업시수 증배가 영어 학업성취도에 미 치는 영향을 도구변수를 활용하여 살펴보았다. 본 연구는 단위학교에 교육과정 편성권한이 확대되더라 도, 단위학교의 교육과정 편성은 학부모와 교원 등 학교 구성원간의 갈등과 타협의 산물이라는 점에 주목하였다. 영어시수를 증배한 학교의 특성을 조사한 결과를 보면 학교장의 교육과정 결정권의 소재 인식, 교과교실제도 시행 및...
883.

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)

Jian Guo, Soo-Jin Park, Long-Yue Meng, Xinghua Jin 저
...
- 3,000원
With continuous development in the field of sample preparation technology, solid phase micro-extraction (SPME) has been widely used in analytical chemistry for high extraction efficiency and convenient operation. Different materials lead 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...
884.

Electrochemical determination of chloramphenicol using a glassy carbon electrode modified with dendrite-like Fe₃O₄ nanoparticles

Krishnan Giribabu, Sung-Chan Jang, Yuvaraj Haldorai, Muruganantham Rethinasabapathy, Seo Yeong Oh, Arunkumar Rengaraj, Young-Kyu Han 한국탄소학회 Carbon Letters 10 Pages

한국탄소학회 Carbon Letters 2017, Vol.23 6 38-47 (10 pages)

Krishnan Giribabu, Sung-Chan Jang, Yuvaraj Haldorai, Muruganantham Rethinasabapathy, Seo Yeong Oh, Arunkumar Rengaraj, Young-Kyu Han 저
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- 3,000원
In this study, magnetite (Fe3O4) nanoparticles were electrochemically synthesized in an aqueous electrolyte at a given potential of -1.3 V for 180 s. Scanning electron microscopy revealed that dendrite-like Fe3O4 nanoparticles with a mean size of < 80 nm were electrodeposited on a glassy carbon electrode (GCE). The Fe3O4/GCE was utilized for sensing chloramphenicol (CAP) by cyclic voltammetry and square wave voltammetry. A reduction peak of CAP at the Fe3O4/GCE was observed at 0.62 V, whereas...
885.

Synthesis and characterization of carbon doped TiO₂ photocatalysts supported on stainless steel mesh by sol-gel method

JO. Tijani, OO. Fatoba, TC. Totito, WD. Roos, LF. Petrik 한국탄소학회 Carbon Letters 12 Pages

한국탄소학회 Carbon Letters 2017, Vol.22 6 48-59 (12 pages)

JO. Tijani, OO. Fatoba, TC. Totito, WD. Roos, LF. Petrik 저
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- 4,100원
This study synthesized pure anatase carbon doped TiO₂ photocatalysts supported on a stainless steel mesh using a sol-gel solution of 8% polyacrylonitrile (PAN)/dimethylformamide (DMF)/TiCl₄. The influence of the pyrolysis temperature and holding time on the morphological characteristics, particle sizes and surface area of the prepared catalyst was investigated. The prepared catalysts were characterized by several analytical methods: high resolution scanning electron microscopy (HRSEM), energy...
886.

Graphene accelerates osteoblast attachment and biomineralization

Jia Ren, Xiaogang Zhang, Yao Chen 한국탄소학회 Carbon Letters 6 Pages

한국탄소학회 Carbon Letters 2017, Vol.22 5 42-47 (6 pages)

Jia Ren, Xiaogang Zhang, Yao Chen 저
...
- 3,000원
In this paper, the in vitro biocompatibility of graphene film (GF) with osteoblasts was evaluated through cell adhesion, viability, alkaline phosphatase activity, F-actin and vinculin expressions, versus graphite paper as a reference material. The results showed that MG-63 cells exhibited stronger cell adhesion, better proliferation and viability on GF, and osteoblasts cultured on GF exhibited vinculin expression throughout the cell body. The rougher and wrinkled surface morphology, higher...
887.

Adsorption of lisinopril and chlorpheniramine from aqueous solution on dehydrated and activated carbons

El-Said I. El-Shafey, Haider A. J. Al-Lawati, Wafa S. H. Al-Saidi 한국탄소학회 Carbon Letters 11 Pages

한국탄소학회 Carbon Letters 2016, Vol.19 2 12-22 (11 pages)

El-Said I. El-Shafey, Haider A. J. Al-Lawati, Wafa S. H. Al-Saidi 저
...
- 4,000원
Date palm leaflets were used as a precursor to prepare dehydrated carbon (DC) via phosphoric acid treatment at 150°C. DC, acidified with H3PO4, was converted to activated carbon (AC) at 500°C under a nitrogen atmosphere. DC shows very low surface area (6.1 m2/g) while AC possesses very high surface area (829 m2/g). The removal of lisinopril (LIS) and chlorpheniramine (CP) from an aqueous solution was tested at different pH, contact time, concentration, and temperature on both carbons. The...
888.

Carbon nanotubes synthesis using diffusion and premixed flame methods: a review

Garima Mittal, Vivek Dhand, Kyong Yop Rhee, Hyeon-Ju Kim and Dong Ho Jung 한국탄소학회 Carbon Letters 10 Pages

한국탄소학회 Carbon Letters 2015, Vol.16 No.1 1 1-10 (10 pages)

Garima Mittal, Vivek Dhand, Kyong Yop Rhee, Hyeon-Ju Kim and Dong Ho Jung 저
...
- 3,000원
In recent years, flame synthesis has absorbed a great deal of attention as a combustion method for the production of metal oxide nanoparticles, carbon nanotubes, and other related carbon nanostructures, over the existing conventional methods. Flame synthesis is an energyefficient, scalable, cost-effective, rapid and continuous process, where flame provides the necessary chemical species for the nucleation of carbon structures (feed stock or precursor) and the energy for the production of carbon...
889.

Preparation and application of reduced graphene oxide as the conductive material for capacitive deionization

Ayu Tyas Utami Nugrahenny, Jiyoung Kim, Sang-Kyung Kim, Dong-Hyun Peck, Seong-Ho Yoon, Doo-Hwan Jung 한국탄소학회 Carbon Letters 7 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.1 5 38-44 (7 pages)

Ayu Tyas Utami Nugrahenny, Jiyoung Kim, Sang-Kyung Kim, Dong-Hyun Peck, Seong-Ho Yoon, Doo-Hwan Jung 저
...
- 3,000원
This paper reports the effect of adding reduced graphene oxide (RGO) as a conductive material to the composition of an electrode for capacitive deionization (CDI), a process to remove salt from water using ionic adsorption and desorption driven by external applied voltage. RGO can be synthesized in an inexpensive way by the reduction and exfoliation of GO, and removing the oxygen-containing groups and recovering a conjugated structure. GO powder can be obtained from the modification of Hummers...
890.

Effects of binder type and heat treatment temperature on physical properties of a carbon composite bipolar plate for PEMFCs

Dong-Su Kang, Jea-Seung Roh 한국탄소학회 Carbon Letters 7 Pages

한국탄소학회 Carbon Letters 2013, Vol.14 No.2 7 110-116 (7 pages)

Dong-Su Kang, Jea-Seung Roh 저
- 3,000원

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