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- 대한기계학회론문집. TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS. B. B(1)
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- 한국수산학회지: BULLETIN OF THE KOREAN FISHERIES SOCIETY(1)
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대두종자의 polymer coating 연구 1. polymer coating 종자의 conductivity 차이
한국작물학회 韓國作物學會誌 1994, Vol.39 No.2 158-164 (7 pages)
2. Conductivity는 침종 후 시간이 경과할 수록 높아졌고, 100립중이 무거울 수록 높았다. 3. 수확년도가 오래된 종자의 conductivity가 당년에 수확한 종자보다도 높게 나타났다 4. 수분흡수 정도는 coating polymer에 따라 각각 달랐는데 daran 8600은 질이 떨어지는 종자에서는 수분흡수를 크게 저 해하였다. 5. Coating polymer 중 waterlock, captan, klucel, sacrust 등은 발아율을 상승시켰고, daran 8600은 발아율을 저하시켰으며 나머지 polymer는 품종에 따라 각각 달랐고 그 정도는 질이 떨어지는 종자에서 훨씬 컸다. 6.... -
Effect of Bacillus mesonae H20-5 Treatment on Rhizospheric Bacterial Community of Tomato Plants under Salinity Stress
Shin Ae Lee, Hyeon Su Kim, Mee Kyung Sang, Jaekyeong Song, Hang-Yeon Weon 한국식물병리학회 The Plant Pathology Journal 10 Pages
한국식물병리학회 The Plant Pathology Journal 2021, 37권 6호 15 662-671 (10 pages)
Plant growth-promoting bacteria improve plant growth under abiotic stress conditions. However, their effects on microbial succession in the rhizosphere are poorly understood. In this study, the inoculants of Bacillus mesonae strain H20-5 were administered to tomato plants grown in soils with different salinity levels (EC of 2, 4, and 6 dS/m). The bacterial communities in the bulk and rhizosphere soils were examined 14 days after H20-5 treatment using Illumina MiSeq sequencing of the bacterial... -
Evaluation of Streptomyces saraciticas as Soil Amendments for Controlling Soil-Borne Plant Pathogens
Pei-Hsuan Wu, Tung-Tsuan Tsay, Peichen Chen 한국식물병리학회 The Plant Pathology Journal 11 Pages
한국식물병리학회 The Plant Pathology Journal 2021, 37권 6호 9 596-606 (11 pages)
cause mortality to the root knot nematode eggs and juveniles. Pot and greenhouse tests showed that application of 0.08% LTM-m could achieve a great reduction of both diseases and significantly increase plant fresh weight. Greenhouse trials revealed that application of LTM- m could change soil properties, including soil pH value, electric conductivity, and soil organic matter. Our re- sults indicate that application of LTM-m bio-organic amendments could effectively manage soil-borne pathogens. -
Role of Trehalose Synthesis in Ralstonia syzygii subsp. indonesiensis PW1001 in Inducing Hypersensitive Response on Eggplant (Solanum melongena cv. Senryo-nigou)
Nur Laili, Takafumi Mukaihara, Hidenori Matsui, Mikihiro Yamamoto, Yoshiteru Noutoshi, Kazuhiro Toyoda, Yuki Ichinose 한국식물병리학회 The Plant Pathology Journal 14 Pages
한국식물병리학회 The Plant Pathology Journal 2021, 37권 6호 7 566-579 (14 pages)
Ralstonia syzygii subsp. indonesiensis (Rsi, former name: Ralstonia solanacearum phylotype IV) PW1001, a causal agent of potato wilt disease, induces hypersen- sitive response (HR) on its non-host eggplant (Solanum melongena cv. Senryo-nigou). The disaccharide treha- lose is involved in abiotic and biotic stress tolerance in many organisms. We found that trehalose is required for eliciting HR on eggplant by plant pathogen Rsi PW1001. In R. solanacearum, it is known that the OtsA/ OtsB pathway is... -
Characterization of Virulence Function of Pseudomonas cichorii Avirulence Protein E1 (AvrE1) during Host Plant Infection
Duyen Do Tran Huong, Nagendran Rajalingam, Yong Hoon Lee 한국식물병리학회 The Plant Pathology Journal 8 Pages
한국식물병리학회 The Plant Pathology Journal 2021, 37권 5호 9 494-501 (8 pages)
Pseudomonas cichorii secretes effectors that suppress defense mechanisms in host plants. However, the function of these effectors, including avirulence protein E1 (AvrE1), in the pathogenicity of P. cichorii, remains unexplored. In this study, to investigate the function of avrE1 in P. cichorii JBC1 (PcJBC1), we created an avrE1-deficient mutant (JBC1ΔavrE1) using CRISPR/ Cas9. The disease severity caused by JBC1ΔavrE1 in tomato plants significantly decreased by reducing water soaking during... -
Field Sanitation and Foliar Application of Streptomyces padanus PMS-702 for the Control of Rice Sheath Blight
Chia-Jung Yang, Tzu-Pi Huang, Jenn-Wen Huang 한국식물병리학회 The Plant Pathology Journal 15 Pages
한국식물병리학회 The Plant Pathology Journal 2021, 37권 1호 5 57-71 (15 pages)
Rice sheath blight (ShB), caused by Rhizoctonia solani Kühn AG1-IA, is one of the destructive rice diseases worldwide. The aims of this study were to develop bio- control strategies focusing on field sanitation and foliar application with a biocontrol agent for ShB manage- ment. Streptomyces padanus PMS-702 showed a great antagonistic activity against R. solani. Fungichromin produced by S. padanus PMS-702, at 3.07 mg/l inhib- ited 50% mycelial growth, caused leakage of cytoplasm, and... -
Ralstonia solanacearum Type III Effectors with Predicted Nuclear Localization Signal Localize to Various Cell Compartments and Modulate Immune Responses in Nicotiana spp.
Hyelim Jeon, Wanhui Kim, Boyoung Kim, Sookyeong Lee, Jay Jayaraman, Gayoung Jung, Sera Choi, Kee Hoon Sohn, C?cile Segonzac 한국식물병리학회 The Plant Pathology Journal 11 Pages
한국식물병리학회 The Plant Pathology Journal 2020, 36권 1호 4 43-53 (11 pages)
Ralstonia solanacearum (Rso) is a causal agent of bacterial wilt in Solanaceae crops worldwide including Republic of Korea. Rso virulence predominantly relies on type III secreted effectors (T3Es). However, only a handful of Rso T3Es have been characterized. In this study, we investigated subcellular localization of and manipulation of plant immunity by 8 Rso T3Es predicted to harbor a nuclear localization signal (NLS). While 2 of these T3Es elicited cell death in both Nicotiana benthamiana and... -
Localization of Barley yellow dwarf virus Movement Protein Modulating Programmed Cell Death in Nicotiana benthamiana
한국식물병리학회 The Plant Pathology Journal 13 Pages
한국식물병리학회 The Plant Pathology Journal 2017, 33권 1호 6 53-65 (13 pages)
Barley yellow dwarf virus (BYDV) belongs to Luteovirus and is limited only at phloem related tissues. An open reading frame (ORF) 4 of BYDV codes for the movement protein (MP) of BYDV gating plasmodesmata (PD) to facilitate virus movement. Like other Luteoviruses, ORF 4 of BYDV is embedded in the ORF3 but expressed from the different reading frame in leaky scanning manner. Although MP is a very important protein for systemic infection of BYDV, there was a little information. In this study, MP... -
Effect of Aerated Compost Tea on the Growth Promotion of Lettuce, Soybean, and Sweet Corn in Organic Cultivation
한국식물병리학회 The Plant Pathology Journal 10 Pages
한국식물병리학회 The Plant Pathology Journal 2015, 31권 3호 7 259-268 (10 pages)
This study investigated the chemical characteristics and microbial population during incubation of four kinds of aerated compost teas based on oriental medicinal herbs compost, vermicompost, rice straw compost, and mixtures of three composts (MOVR). It aimed to determine the effects of the aerated compost tea (ACT) based on MOVR on the growth promotion of red leaf lettuce, soybean and sweet corn. Findings showed that the pH level and EC of the compost tea slightly increased based on the... -
The Effect of Soil Physico-chemical Properties on Rhizome Rot and Wilt Disease Complex Incidence of Ginger Under Hill Agro-climatic Region of West Bengal
한국식물병리학회 The Plant Pathology Journal 5 Pages
한국식물병리학회 The Plant Pathology Journal 2010, 26권 2호 15 198-202 (5 pages)
of physico-chemical properties (viz. organic carbon(OC), pH, electrical conductivity, nitrogen, phosphorus and potassium content) of ginger growing soil with incidence percentage of rhizome rot and wilt disease complex of ginger. Organic carbon content and pH of the ginger soil contributed significantly (93%) in the prediction of ginger rhizome rot and wilt disease complex incidence with negative correlation. Soil having weak acidic reaction with OC percent greater than 2.25 was observed to have... -
Ecological Factors Influencing Severity of Cashew Fusarium Wilt Disease in Tanzania
Stanslaus A. Lilai, Fortunus A. Kapinga, Wilson A. Nene, William V. Mbasa, Donatha D. Tibuhwa 한국식물병리학회 식물병연구 12 Pages
한국식물병리학회 식물병연구 2021, 27권 2호 1 49-60 (12 pages)
Cashew (Anacardium occidentale L.) is an important cash crop in Tanzania as a source of income to cashew growers and provides foreign exchange for the country. Despite its significance, the crop is threatened by fast spreading disease known as cashew Fusarium wilt caused by Fusarium oxysporum. Field assessment and laboratory tests were conducted to determine incidences of the disease, severity, ecological factors that influence them and explored the pathogen host specificity in six cashew... -
플라즈마토치용융로를 이용한 슬래그의 점도특성 연구
조현제, 박승철, 김천우 한국열환경공학회 열환경공학 11 Pages
한국열환경공학회 열환경공학 2012, 제 9권 3호 5 35-45 (11 pages)
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플라즈마 토치를 이용한 토양과 소각재 용융특성 연구
한국열환경공학회 열환경공학 2013, 제 10권 2호 2 11-21 (11 pages)
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Preparation of photoresist-derived carbon micropatterns by proton ion beam lithography and pyrolysis
Hui-Gyun Nam, Jin-Mook Jung, In-Tae Hwang, Junhwa Shin, Chang-Hee Jung, Jae-Hak Choi 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 8 55-61 (7 pages)
fabricated from a negative-type SU-8 photoresist by proton ion beam lithography and pyrolysis. Well-defined negative-type SU-8 micropatterns were formed by proton ion beam lithography at the optimized fluence of 1×1015 ions cm?2 and then pyrolyzed to form CMs. The crosslinked network structures formed by proton irradiation were converted to pseudo-graphitic structures by pyrolysis. The fabricated CMs showed a good electrical conductivity of 1.58×102 S cm?1 and a very low surface roughness. -
Mechanical and electrical properties of cement paste incorporated with pitch-based carbon fiber
Inkyu Rhee, Jin Hee Kim, Sang Hee Park, Sungho Lee, Bong Ryeul Ryu, Yoong Ahm Kim 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2017, Vol.23 4 22-29 (8 pages)
The compressive strength and electrical resistance of pitch-based carbon fiber (CF) in cementitious materials are explored to determine the feasibility of its use as a functional material in construction. The most widely used CFs are manufactured from polyacrylonitrile (PAN-based CF). Alternatively, short CFs are obtained in an economical way using pitch as a precursor in a melt-blown process (pitch-based CF), which is cheaper and more eco-friendly method because this pitch-based CF is basically... -
Removal of chromium from tannery wastewater by electrosorption on carbon prepared from peach stones: effect of applied potential
Mounir Ziati, Fariza Khemmari, Mohamed Kecir, Sabir Hazourli 한국탄소학회 Carbon Letters 5 Pages
한국탄소학회 Carbon Letters 2017, Vol.21 10 81-85 (5 pages)
The objective of this study is the removal of chromium from tannery wastewater by electrosorption on carbon prepared from lignocellulosic natural residue "peach stones' thermally treated. The followed steps for obtaining coal in chronological order were: cleaning, drying, crushing and finally its carbonization at 900°C. The characterization of the carbon material resulted in properties comparable to those of many coals industrially manufactured. The study of the dynamic adsorption of chromium... -
Monolithic porous carbon materials prepared from polyurethane foam templates
Jo?o Pires, Andr? Janeiro, Filipe J. Oliveira, Alexandre C. Bastos, Mois?s L. Pinto 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2016, Vol.18 2 11-17 (7 pages)
Mesoporosity was achieved through the use of soft templating with surfactant Pluronic F127, and macroporosity from the polyurethane foams was retained. Conditions to obtain high porosity materials were optimized. The best materials have high specific surface areas (380 and 582 m2 g?1, respectively) and high electrical conductivity, which make them good candidates for supports in sensors. These materials showed an almost linear dependence between the potential and the pH of aqueous solutions. -
Mesophase formation behavior in petroleum residues
Subhash Kumar, Manoj Srivastava 한국탄소학회 Carbon Letters 12 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.3 3 171-182 (12 pages)
Mesophase pitch is an important starting material for making a wide spectrum of industrial and advanced carbon products. It is produced by pyrolysis of petroleum residues. In this work, mesophase formation behavior in petroleum residues was studied to prepare environmentally- benign mesophase pitches, and the composition of petroleum residues and its influence on the mesophase formation was investigated. Two petroleum residues, i.e., clarified oil s (CLO-1, CLO-2) obtained from fluid catalytic... -
Effect of surface modification of carbon felts on capacitive deionization for desalination
Jong-Ho Lee, Hong-Joo Ahn, Donghwan Cho, Jeong-Il Youn, Young-Jig Kim, Han-Jun Oh 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.2 4 93-100 (8 pages)
Surface modified carbon felts were utilized as an electrode for the removal of inorganic ions from seawater. The surfaces of the carbon felts were chemically modified by alkaline and acidic solutions, respectively. The potassium hydroxide (KOH) modified carbon felt exhibited high Brunauer-Emmett-Teller (BET) surface areas and large pore volume, and oxygencontaining functional groups were increased during KOH chemical modification. However, the BET surface area significantly decreased by nitric... -
Characterization and influence of shear flow on the surface resistivity and mixing condition on the dispersion quality of multi-walled carbon nanotube/polycarbonate nanocomposites
Young Sil Lee, Kwan Han Yoon 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.2 3 86-92 (7 pages)
eliminated. MWCNT/PC nanocomposite sample exhibited lower percolation thresholds (at 0.8 vol%) and higher electrical conductivity values than those of samples extruded by capillary and injection molding. Shear induced orientation of MWCNT was observed via scanning electron microscopy, in the direction of flow in a PC matrix during the extrusion process. The surface resistivity rose with increasing shear rate, because of the breakdown of the network junctions between MWCNTs. For real applications... -
Conducting and interface characterization of carbonate-type organic electrolytes containing EMImBF4 as an additive against activated carbon electrode
Mingyeong Kim, Kyungmin Kim and Seok Kim 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.1 8 51-56 (6 pages)
by scanning electron microscopy method and X-ray photoelectron spectroscopy. From the experimental results, increasing the EMImBF4 content increased the ionic conductivity and reduced bulk resistance and interfacial resistance. In particular, after adding 15 vol% EMImBF4 in 0.2 M SBPBF4 PC/DMC electrolyte, the organic electrolyte showed superior capacitance and interfacial resistance. However, when EMImBF4 content exceeded 15 vol%, the capacitance was saturated and the voltage range decreased. -
Effect of surface treatment of graphene nanoplatelets for improvement of thermal and electrical properties of epoxy composites
Minjae Kim, Yeongseon Kim, Sung Hyeon Baeck and Sang Eun Shim 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.1 5 34-40 (7 pages)
In this study, in order to improve the thermal and electrical properties of epoxy/graphene nanoplatelets (GNPs), surface modifications of GNPs are conducted using silane coupling agents. Three silane coupling agents, i.e. 2-(3,4-epoxycyclohexyl)-ethyltrimethoxysilane (ETMOS), 3-glycidoxypropyltriethoxysilane (GPTS), and 3-glycidoxypropyltrimethoxysilane (GPTMS), were used. Among theses, GPTMS exhibits the best modification performance for fabricating GNP-incorporated epoxy composites. The effect... -
Influence of ionic liquid additives on the conducting and interfacial properties of organic solvent-based electrolytes against an activated carbon electrode
Kyungmin Kim, Yongju Jung, Seok Kim 한국탄소학회 Carbon Letters 5 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.3 5 187-191 (5 pages)
as a common salt. Using the PYR14BF ionic liquid as additive produced higher ionic conductivity in the electrolyte and lower interface resistance between carbon and electrolyte, resulting in improved capacitance. The chemical and electrochemical stability of the electrolyte was measured by ionic conductivity meter and linear sweep voltammetry. The electrochemical analysis between electrolyte and carbon electrode was examined by cyclic voltammetry and electrochemical impedance spectroscopy. -
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)
The physical and electrochemical characteristics of RGO material were evaluated and its desalination performance was tested with a CDI unit cell with a potentiostat and conductivity meter, by varying the applied voltage and feed rate of the salt solution. The performance of RGO was compared to graphite as a conductive material in a CDI electrode. The result showed RGO can increase the capacitance, reduce the equivalent series resistance, and improve the electrosorption capacity of CDI electrode. -
The influence of water characteristics on the aquatic insect and plant assemblage in small irrigation ponds in Civilian Control Zone, Korea
Jae Hyun Kim, Hyun Yong Chung, Seoung Ho Kim, Jae Geun Kim 한국습지학회 한국습지학회지 11 Pages
한국습지학회 한국습지학회지 2016, Vol.18 No.4 1 331-341 (11 pages)
A small irrigation pond for a rice paddy field is a very important refuge for aquatic insects and plants. To reveal environmental factors determining species composition of aquatic insect and plant communities, we analyzed water chemistry and connection between pond and surrounding in five types of irrigation ponds based on water source and connection in CCZ of South Korea: stagnation, exchange-stagnation, spring, stagnation-spring, and exchangespring types. The stagnation type had the most... -
농촌과 도시지역 비교를 통한 연못형습지의 식생다양성 증진방안 연구
손진관, 공민재, 강동현, 남홍식, 김남춘 한국습지학회 한국습지학회지 13 Pages
한국습지학회 한국습지학회지 2015, Vol.17 No.1 8 62-74 (13 pages)
도시지역은 생태적 기능 쇠퇴 등 다양한 위협에 처해있다. 이러한 도시환경을 개선, 복원하기 위한 노력의 일환으로 연못형습지(Pond) 유형이 많이 조성되고 있다. 본 연구는 농촌의 반 자연형 습지 특성을 분석하여 도시지역 습지의 개 선방안을 알아보았다. 수질환경 개선방안으로 인근 하천의 자연수를 유입하거나 강우의 직접유입을 제안하였다. 토양 환경 중 토양산도, 유기물, 전질소 함량 등을 분석한 결과 농촌지역과 차이가 나는 원인으로는 도시지역이 인공적인 수문공급, 고사체 제거, 인공토양, 방수재 사용 등을 제시하였고... -
순천만 유입수계의 시·공간적 수질환경 평가
박상진, 정정조 한국습지학회 한국습지학회지 9 Pages
한국습지학회 한국습지학회지 2013, Vol.15 No.3 4 329-337 (9 pages)
2008년 10월부터 2009년 9월까지 유입수계 하천의 수질특성을 파악하고 통계적 처리를 통하여 수질자료를 해석하였다. 순천만 유입수계 중에서 순천서천, 순천동천, 옥천은 환경부고시 하천수질 평가항목 모두에서 I등급으로 비교적 양호한 수질상태를 보였으나, 하천에서 유기물 오염의 지표인 BOD 항목에 대해서 해룡천과 순천만 유입지점에서는 각각 “약간 나쁨”과 “보통”의 결과를 나타내었다. 한편 총질소과 총인의 경우는 하수종말처리장 방류지점과 해룡천에서 다른 하천에 비해서 상대적으로 높은 결과를 나타내었다.... -
조름나물이 서식하는 동해안 석호 습지인 선유담의 생태적 특성 및 보전방안
김흥태, 이광문, 김재근 한국습지학회 한국습지학회지 10 Pages
한국습지학회 한국습지학회지 2013, Vol.15 No.1 4 25-34 (10 pages)
본 연구의 목적은 동해안 석호 습지인 선유담에서 조름나물이 서식하는 부유성 매트를 중심으로 조름나물 서식지 의 생태적 특성을 밝히고, 서식지를 보전하기 위한 방안을 제안하고자 한다. 식생학적 특성을 확인하기 위하여 부 유성 매트의 조름나물 서식지를 중심으로 방형구를 이용한 식생조사를 수행하였다. 부유성 매트의 두께 및 수위, 깊이별 유기물 함량을 조사하였다. 표층수의 pH, DO, EC, TDS를 측정하고, 인산, 질산, 암모늄, Ca, K, Na, Mg 의 양을 분석하였다. 선유담에는 총 78분류군의 식물이 서식하고 있으며, 부유성... -
오대산 물이끼 이탄습지의 생태적 특성
박지현, 김재근 한국습지학회 한국습지학회지 20 Pages
한국습지학회 한국습지학회지 2012, Vol.14 No.1 9 101-120 (20 pages)
람사르 습지로 지정된 오대산 습지 중 하나인 질뫼늪 보호구역에서 2007년부터 2011년까지 생태적 특성을 파악하였다. 조사 결과, 유출수는 연평균 0.80 m3/min이었다. 질뫼늪 보호구역 수질 중 pH는 평균 6.1, EC는 19 μS/cm, 칼륨, 칼슘, 암모늄 등의 양이온과 질산, 그리고 유효 인산 분석 결과 모두 평균 2.0 mg/L 이하였다. 퇴적층은 다른 산지 습지인 용늪이나 왕등재늪에 비하여 덜 발달되었다. 식물상으로는 49과 118속 163종 3아종,29변종, 6품종으로 163종류가 조사되었으며, 물이끼가 우점하는 장소와 사초기둥에 환경부 지정... -
조름나물의 성장에 미치는 서식 기질의 영향
이광문, 김재근 한국습지학회 한국습지학회지 8 Pages
한국습지학회 한국습지학회지 2011, Vol.13 No.2 17 355-362 (8 pages)
우리나라에서 멸종위기 식물인 조름나물( Menyanthes trifoliata L.)은 긴 지하경을 가지는 다년생 정수식물이며, 양분이 적은 이탄습지 또는 산지 호수의 가장자리에 주로 서식한다. 조름나물의 복원 시 적절한 서식지 기질을 결정하기 위하여, 양분 함량이 다른 물, 물이끼 매트, 논흙을 기질로 사용한 메조코즘을 조성하여 조름나물의 성장을 조사하였다. 논흙의 경우에는 침수와 포화습윤 조건으로 나누어 조성하였다. 각 조건마다 약 10cm의 지하경을 심고, 피도, 잎의 면적, 잎의 개수, 지하경의 무게를 측정하였다. 각 변수들은,... -
서식 기질과 동반종이 조름나물의 생장에 미치는 영향
이광문, 김재근 한국습지학회 한국습지학회지 9 Pages
한국습지학회 한국습지학회지 2011, Vol.13 No.3 21 613-621 (9 pages)
조름나물( Menyanthes trifoliata L.)은 주로 산지습지에 서식하는 우리나라 멸종위기 식물로, 인간에 의한 교란과 기후변화로 서식지가 감소되고 있다. 생물의 서식을 제한하는 요인으로 환경과 종간경쟁이 있으므로 조름나물의 분포가 제한되는 이유를 이해하기 위해서는 서식 환경 뿐아니라 함께 서식하는 다른 종의 영향을 살펴보는 것이 중요하다. 본 연구에서는 서식 기질과 동반종이 조름나물의 서식에 미치는 영향을 살펴보고자 하였다. 서식기질로는 물이끼 매트와 논흙을 두었으며, 각 조건에서의 식생과 조름나물의 생장을... -
Nutrient dynamics in montane wetlands, emphasizing the relationship between cellulose decomposition and water chemistry
한국습지학회 한국습지학회지 2005, Vol.7 No.4 1 33-42 (10 pages)
Wetlands often function as a nutrient sink. It is well known that increased input of nutrient increases the primary productivity but it is not well understood what is the fate of produced biomass in wetland ecosystem. Water and sediment quality, decomposition rate of cellulose, and sediment accumulation rate in 11 montane marshes in northern Sierra Nevada, California were analyzed to trace the effect of nitrogen and phosphorus content in water on nutrient dynamics. Concentrations of ammonium,... -
간장 및 마가린중의 식염함량의 전기화학적 측정법
이종혁, 이병호, Lee. Jong-Hyeok, Lee. Byeong-Ho 한국식품과학회 한국식품과학회지 4 Pages
한국식품과학회 한국식품과학회지 1993, Vol.25 No.2 105-108 (4 pages)
한국 간장과 마가린의 식염함량을 효율적이고 신속하게 측정하기 위하여 시관 간장과 가정에서 양조한 간장, 그리고 마가린을 선정하여 전기전도도(conductivity)를 이용한 측정법을 설정하였다. Wien bridge를 사용하여 제작한 conductivity meter로 측정한 값과 식염농도와의 사이에 다음 직선식이 성립하였다. $15^{circ}C$ y=0.083x-1.253 (1) $20^{circ}C$ y=0.077x-2.062 (2) $25^{circ}C$ y=0.071x-2.686 (3) $30^{circ}C$ y=0.066x-3.153 (4) $35^{circ}C$ y=0.062x-3.522 (5) y=(-0.001139t+0.0999)x+(-0.126t+0.557)... -
전기전도도를 이용한 어육의 선도판정
이병호, LEE. Byeong-HO 한국수산학회 한국수산학회지: Bulletin of the Korean Fisheries Society 9 Pages
한국수산학회 한국수산학회지: Bulletin of the Korean Fisheries Society 1989, Vol.22 No.5 219-227 (9 pages)
conductivity)를 교류용 Kohlraush bridge, Wien bridge를 사용하여 제작한 Conductivity meter로 측정하여 다음과 같은 결과를 얻었다. 1. 냉동어육의 해동후 부패초기의 electric conductivity는 $6,100pm({mu}u/cm)$이었고 비동결어육인 방어와 쥐노래미 및 고등어의 부패초기 electric conductivity는 $20^{circ}C$에서 $5,100~5,400({mu}u/cm)$로 냉동육에 비하여 약 $1,000({mu}u/m)$낮았다. 2. VBN과 electric conductivity는 정상관관계를 가지며 부패초기 electric conductivity값이 나타났을 때의 VBN은 $30~35mg\%$였다. 3.... -
열선을 이용한 혼합기체의 농도와 유량의 측정
김영한, 최종정, Kim. Young-Han, Park. Jong-Jueng 제어로봇시스템학회 제어·자동화·시스템공학 논문지 6 Pages
제어로봇시스템학회 제어·자동화·시스템공학 논문지 2002, Vol.8 No.5 407-412 (6 pages)
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자화수에서 계면활성제 임계미셀농도 변화에 관한 연구
이성현, 이석근, 전상일, Lee. Sung-Hyun, Lee. Suk-Keun, Jeon. Sang-Il 대한화학회 대한화학회지 8 Pages
대한화학회 대한화학회지 2009, Vol.53 No.2 125-132 (8 pages)
임계미셀농도 (critical micelle concentrations, CMC) 변화에 미치는 영향을 다음과 같이 관찰하였다. $25;{^{circ}C}$에서 전도도계(conductivity meter)를 이용하여 음이온 계면활성제인 SDS (sodium dodecyl sulfate)와 양이온 계면활성제인 CTAB (cetyltrimethylammonium bromide)의 CMC를 측정하였고, 표면장력계를 사용하여 SDS와 CTAB 그리고, 비이온 계면활성제인 Pluronic F-68의 CMC를 측정하였다. 또한 Isothermal titration calorimeter (ITC)를 이용하여 $25;{^{circ}C}$에서 SDS의 열량변화를 측정하여 CMC의 변화율을 측... -
금속스크랩이 혼합된 상변화물질의 유효열전도율
김시범, 노승탁 대한기계학회 大韓機械學會論文集 6 Pages
대한기계학회 大韓機械學會論文集 1986, Vol.10 No.6 923-928 (6 pages)
본 논문에서는 열전도율이 큰 금속의 스크랩과 파라핀을 혼합한 축열 매질에 있어서 스크랩의 체적 혼합율에 따르는 열전도율의 변화를 모델링과 실험으로 구해서 축열 계산에 필요한 열전도율 자료를 제시하고자 한다. -
3-ring 임피던스미터의 유체 전기 전도도 독립성에 대한 실험적 연구
김종록, 안예찬, 김무환, Kim. Jong-Rok, Ahn. Yeh-Chan, Kim. Moo-Hwan 대한기계학회 大韓機械學會論文集. Transactions of the Korean society of mechanical engineers. B. B 7 Pages
대한기계학회 大韓機械學會論文集. Transactions of the Korean society of mechanical engineers. B. B 2010, Vol.34 No.11 1027-1033 (7 pages)
2상유동(기체-액체) 현상은 전자기발전, 원자력발전, 철강산업 등 유체 시스템에 자주 나타나는 현상으로, 2상유동을 파악하는 것은 유체 시스템의 안정성 및 성능을 위해 중요하다. 2상유동 특성 중 기공률은 압력강하와 열전달 성능을 결정하는 주요 인자로서 이를 측정하는 기술이 특히 중요하다. 유동의 임피던스를 측정하여 기공률을 산정하는 임피던스법은 전기적 특성을 이용하기 때문에 반응속도가 빨라 실시간 측정이 가능하며, 유동관 벽에 전극을 설치할 경우 유동 교란없이 측정할 수 있는 장점이 있다. Coney는 원형관에... -
Activated carbons prepared from mixtures of coal tar pitch and petroleum pitch and their electrochemical performance as electrode materials for electric double-layer capacitor
Eunji Lee, Soon Hyung Kwon, Poo Reum Choi, Ji Chul Jung, Myung-Soo Kim 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.2 2 78-85 (8 pages)
Activated carbons (ACs) were prepared by activation of coal tar pitch (CTP) in the range of 700°C-1000°C for 1-4 h using potassium hydroxide (KOH) powder as the activation agent. The optimal activation conditions were determined to be a CTP/KOH ratio of 1:4, activation temperature of 900°C, and activation time of 3 h. The obtained ACs showed increased pore size distribution in the range of 1 to 2 nm and the highest specific capacitance of 122 F/g in a two-electrode system with an organic...
