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331.

식물에서 수액 상승 원리에 대한 이해

이복선 공주교육대학교 초등교육연구원 교육논총 15 Pages

공주교육대학교 초등교육연구원 교육논총 52권1호 10 187-201 (15 pages)

이복선 저
...
- 4,400원
식물체에서 수액상승의 원리는 근압설(양압)과 응집력설(음압)으로 설명되고 있다. 그러나 증산에 의 한 물기둥의 상승인 응집력-장력 가설에서 색전 현상을 회복하는 설명이 부족하였다. 오랫동안 단 순한 물리적인 현상으로 모세관 이론에 의해 표면장력과 증산으로 인한 곡면이 충분히 물기둥을 다 시 연결시킬 수 있다고 보았으나 이제는 새로운 관점으로 도관 유조직의 도움을 받아서 당을 분비 함으로 삼투적인 회복이 일어난다고 본다. 따라서 도관은 더 이상 죽은 조직이 아니라 살아 있는 조직으로 체관과의 상호작용을 하여...
332.

Impact of single metal oxide and coal ash on secondary ultrafine particle generation through SO2 and NO2 heterogeneous reaction

Ru-Jiao Song, Zi-Xiang Xu, Joo-Chang Park, Li-Hua Xu, Hyung-Taek Kim 한국열환경공학회 열환경공학 19 Pages

한국열환경공학회 열환경공학 2020, 제 15권 1호 4 28-46 (19 pages)

Ru-Jiao Song, Zi-Xiang Xu, Joo-Chang Park, Li-Hua Xu, Hyung-Taek Kim 저
...
- 무료
Particulate matter research is of great significance in solving atmospheric environment problems. The heterogeneous reaction of mixed gas on different mineral oxides and coal ash was studied based on a laboratory-built aerosol generating reactor. The product formed on particles was investigated by ion chromatography (IC). SO2 and NO2 could react on oxides to form secondary particles and the order of reactivity of mineral oxides under laboratory reaction conditions is: Al2O3>MgO>CaO>>SiO2, Fe2O3....
333.

바이오메스 열처리 및 수열합성에 의한 복합기공소재 제조

서정권, 이정민 한국열환경공학회 열환경공학 16 Pages

한국열환경공학회 열환경공학 2006, 제 3권 1호 5 39-54 (16 pages)

서정권, 이정민 저
...
- 무료
334.

외부환경온도변화가 운동수행능력에 미치는 영향

이승범, 전용균 한국웰니스학회 한국웰니스학회지 9 Pages

한국웰니스학회 한국웰니스학회지 2013, 제 8권 1호 13 151-159 (9 pages)

이승범, 전용균 저
- 3,000원
이 연구는 외부환경온도변화가 운동수행능력에 미치는 영향을 알아보기 위함이다. 연구대상은 의학적으로 특별한 질환이 없는 D대학 학생 12명으로 설정하였다. 외부환경온도는 저온(5±0.5℃), 상온(20±0.5℃), 고온(33±0.5℃)에서 사전실험을 통해 산출된 V˙ O2max 60%에 해당되는 운동부하 강도로 30분간 운동을 실시하였다. 운동부하검사 중 피험자의 V˙ O2, HRmax, RER, AT의 측정 은 호흡가스분석시스템(Cardio pulmonary exercise test system)을 이용하고, 젖산농도는 운동 후 회복기 5분에 핑거팁으로 채혈하 여...
335.

나노입자에 기초한 의학치료와 연구

Chul-Hee Choi, Seong Hee Choi 한국청각언어재활학회 Audiology and Speech Research 8 Pages

한국청각언어재활학회 Audiology and Speech Research 2013, 제 9권 제 1호 2 7-14 (8 pages)

Chul-Hee Choi, Seong Hee Choi 저
- 3,000원
336.

Interconnected meso/microporous carbon derived from pumpkin seeds as an efficient electrode material for supercapacitors

Mayakrishnan Gopiraman, Somasundaram Saravanamoorthy, Seung-Hyun Kim, Ill-Min Chung 한국탄소학회 Carbon Letters 9 Pages

한국탄소학회 Carbon Letters 2017, Vol.24 10 73-81 (9 pages)

Mayakrishnan Gopiraman, Somasundaram Saravanamoorthy, Seung-Hyun Kim, Ill-Min Chung 저
...
- 3,000원
Interconnected meso/microporous activated carbons were prepared from pumpkin seeds using a simple chemical activation method. The porous carbon materials were prepared at different temperatures (PS-600, PS-700, PS-800, and PS-900) and demonstrated huge surface areas (645?2029 m2 g?1) with excellent pore volumes (0.27?1.30 cm3 g?1). The wellcondensed graphitic structure of the prepared activated carbon materials was confirmed by Raman and X-ray diffraction analyses. The presence of heteroatoms (O...
337.

Lyocell-based activated carbon fibers improved the adsorption of harmful gas properties when produced via dual-simultaneous treatments

Byong Chol Bai, Ji Sun Im, Young-Seak Lee 한국탄소학회 Carbon Letters 5 Pages

한국탄소학회 Carbon Letters 2017, Vol.23 10 69-73 (5 pages)

Byong Chol Bai, Ji Sun Im, Young-Seak Lee 저
...
- 1,500원
In gas adsorption processes, activated carbon fibers (ACFs) are used for the adsorption of the harmful gases that are generated by coal or oil combustion, and they have been widely studied [1,2]. ACFs have been used for harmful gas removal because of their specific surface area, micropores, reproducibility, safety, and processing ability, which are beneficial properties for a wide range of applications [3,4].
338.

Kinetic and multi-parameter isotherm studies of picric acid removal from aqueous solutions by carboxylated multi-walled carbon nanotubes in the presence and absence of ultrasound

Soheila Gholitabar, Hasan Tahermansouri 한국탄소학회 Carbon Letters 11 Pages

한국탄소학회 Carbon Letters 2017, Vol.22 2 14-24 (11 pages)

Soheila Gholitabar, Hasan Tahermansouri 저
...
- 4,000원
Carboxylated multi-wall carbon nanotubes (MWCNTs-COOH) have been used as efficient adsorbents for the removal of picric acid from aqueous solutions under stirring and ultrasound conditions. Batch experiments were conducted to study the influence of the different parameters such as pH, amount of adsorbents, contact time and concentration of picric acid on the adsorption process. The kinetic data were fitted with pseudo-first order, pseudo-secondorder, Elovich and intra-particle diffusion models....
339.

Biologically activated graphite fiber electrode for autotrophic acetate production from CO2 in a bioelectrochemical system

Chae Ho Im, Young Eun Song, Byong-Hun Jeon, Jung Rae Kim 한국탄소학회 Carbon Letters 5 Pages

한국탄소학회 Carbon Letters 2016, Vol.20 12 76-80 (5 pages)

Chae Ho Im, Young Eun Song, Byong-Hun Jeon, Jung Rae Kim 저
...
- 1,500원
Recently, microbial electrosynthesis (MESs) has been highlighted for the purpose of biological CO2 reduction with simultaneous production of intermediates and value-added chemicals. The bioelectrochemical system (BES), which employs microorganisms and a bacterial community as a biocatalyst, has been developed to convert CO2, a greenhouse gas, into liquid biofuels, such as ethanol and butanol, as well as platform chemicals [1]. Several bacterial species, called cathodophilic microorganisms (e.g.,...
340.

Adsorption capability of activated carbon synthesized from coconut shell

Md Shariful Islam, Bee Chin Ang, Samira Gharehkhani, Amalina Binti, Muhammad Afifi 한국탄소학회 Carbon Letters 9 Pages

한국탄소학회 Carbon Letters 2016, Vol.20 1 1-9 (9 pages)

Md Shariful Islam, Bee Chin Ang, Samira Gharehkhani, Amalina Binti, Muhammad Afifi 저
...
- 3,000원
Activated carbon was synthesized from coconut shells. The Brunauer, Emmett and Teller surface area of the synthesized activated carbon was found to be 1640 m2/g with a pore volume of 1.032 cm3/g. The average pore diameter of the activated carbon was found to be 2.52 nm. By applying the size-strain plot method to the X-ray diffraction data, the crystallite size and the crystal strain was determined to be 42.46 nm and 0.000489897, respectively, which indicate a perfect crystallite structure. The...

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