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31.

From Stuck in a Dark Tunnel to Shining New Light: The Stories of Early Childhood Practitioners During the Pandemic

Kyoung Jin Kim, Min Kyung Han, Ji-Hyang Sohn, Jeonghye Nah 환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 23 Pages

환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 2023, Vol.17 No.1 2 25-47 (23 pages)

Kyoung Jin Kim, Min Kyung Han, Ji-Hyang Sohn, Jeonghye Nah 저
...
- 5,200원
South Korea was one of the few countries in the world to face a major outbreak in the first phase of the COVID-19 pandemic. This study portrays the lived experiences of Korean early childhood practitioners striving to thrive between 2020 and 2021. Their stories offer their reflections on their challenges, struggles, and lessons learned throughout the pandemic. Findings reveal that, as time passed, there were longstanding struggles and newly emerging challenges. This study sheds light on early...
32.

단기간 비사용 근위축 후 운동에 따른 caspase-3 m-RNA 변화

채승희 한국웰니스학회 한국웰니스학회지 6 Pages

한국웰니스학회 한국웰니스학회지 2008, 제 3권 2호 3 21-26 (6 pages)

채승희 저
...
- 3,000원
일반적으로 근세포의 손실은 아포트시스(apoptosis)의 반응에 의해 발생되며 근세포 손실은 apoptosis의 강력한 반응에 의해서 발생되며 이작용은 근손실을 촉진시키고 침상휴식이 길어지는 동안 근육손실을 유발하게 되고 특히 인간에게 노화와 함께 apoptosis가 원인이 되는 많은 증거가 나타난다 (Leewenburgh, 2006). 세포의 능동적 사멸은 다세포 유기체(multicellular organisms)들의 정상적 성장을 위해 필수적이며, 건 강한 성인 조직에 세포 전환도 포함할 뿐만 아니라, 분화, 성장 및 노화의 전 과정을 통해 일어나고 있 다....
33.

Development and Validation of the Theory of Transition to College Student : A Sequential Mixed Method of Grounded Theory and Structural Equation Modeling

Hong Song-Ee 한국교육학회 교육학연구 36 Pages

한국교육학회 교육학연구 2021, 59권 3호 3 55-90 (36 pages)

Hong Song-Ee 저
...
- 6,500원
The purpose of this study was to develop a theory of students’ transition to college and to confirm that theory. To understand the nature and meaning of the first-year transition, a qualitative study was conducted using grounded theory, and a questionnaire was developed based on the established transition theory. The validation of the theory was analyzed through structural equation modeling (SEM), and a multi-group analysis was conducted to find out what differences existed in the structural...
34.

Relationships between dielectric properties and characteristics of impregnated and activated samples of potassium carbonate- and sodium hydroxide-modified palm kernel shell for microwave-assisted activation

Norulaina Alias, Muhammad Abbas Ahmad Zaini, Mohd Johari Kamaruddin 한국탄소학회 Carbon Letters 11 Pages

한국탄소학회 Carbon Letters 2017, Vol.24 9 62-72 (11 pages)

Norulaina Alias, Muhammad Abbas Ahmad Zaini, Mohd Johari Kamaruddin 저
...
- 4,000원
The aim of this work was to evaluate the dielectric properties of impregnated and activated palm kernel shells (PKSs) samples using two activating agents, potassium carbonate (K2CO3) and sodium hydroxide (NaOH), at three impregnation ratios. The materials were characterized by moisture content, carbon content, ash content, thermal profile and functional groups. The dielectric properties were examined using an open-ended coaxial probe method at various microwave frequencies (1?6 GHz) and...
35.

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)

Minerva L. Herrera-Sosa, Alex Valadez-Gonz?lez, Humberto V?zquez-Torres, Pierre G. Mani-Gonz?lez, Pedro J. Herrera-Franco 저
...
- 3,000원
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...
36.

Thermo-electrical properties of randomly oriented carbon/carbon composite

Thakur Sudesh Kumar Raunija, N. Supriya 한국탄소학회 Carbon Letters 11 Pages

한국탄소학회 Carbon Letters 2017, Vol.22 3 25-35 (11 pages)

Thakur Sudesh Kumar Raunija, N. Supriya 저
...
- 4,000원
The aim of the work was to investigate the thermo-electrical properties of low cost and rapidly produced randomly oriented carbon/carbon (C/C) composite. The composite body was fabricated by combining the high-pressure hot-pressing (HP) method with the lowpressure impregnation thermosetting carbonization (ITC) method. After the ITC method step selected samples were graphitized at 3000°C. Detailed characterization of the samples’ physical properties and thermal properties, including thermal...
37.

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)

Fan-Long Jin, Soo-Jin Park 저
...
- 4,000원
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....
38.

Overlook of carbonaceous adsorbents and processing methods for elemental mercury removal

Kyong-Min Bae, Byung-Joo Kim and Soo-Jin Park 한국탄소학회 Carbon Letters 9 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.4 2 238-246 (9 pages)

Kyong-Min Bae, Byung-Joo Kim and Soo-Jin Park 저
...
- 3,000원
People have been concerned about mercury emissions for decades because of the extreme toxicity, persistence, and bioaccumulation of methyl Hg transformed from emitted Hg. This paper presents an overview of research related to mercury control technology and identifies areas requiring additional research and development. It critically reviews measured mercury emissions progress in the development of promising control technologies. This review provides useful information to scientists and engineers...
39.

Microwave heating of carbon-based solid materials

Teawon Kim, Jaegeun Lee, Kun Hong Lee 한국탄소학회 Carbon Letters 10 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.1 2 15-24 (10 pages)

Teawon Kim, Jaegeun Lee, Kun Hong Lee 저
...
- 3,000원
As a part of the electromagnetic spectrum, microwaves heat materials fast and efficiently via direct energy transfer, while conventional heating methods rely on conduction and convection. To date, the use of microwave heating in the research of carbon-based materials has been mainly limited to liquid solutions. However, more rapid and efficient heating is possible in electron-rich solid materials, because the target materials absorb the energy of microwaves effectively and exclusively....
40.

Carbon nanotubes–properties and applications

Khalid Saeed Ibrahim 한국탄소학회 Carbon Letters 14 Pages

한국탄소학회 Carbon Letters 2013, Vol.14 No.3 1 131-144 (14 pages)

Khalid Saeed Ibrahim 저
- 4,300원

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