• Title/Summary/Keyword: Trimethylamine

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The study on Buthus martensii Karsch (전할(全蝎)에 대한 문헌적(文獻的) 고찰(考察))

  • Kwon, Ki-Rok;Choi, Sung-Mo;An, Chang-Suk
    • Journal of Pharmacopuncture
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    • v.5 no.1 s.8
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    • pp.181-188
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    • 2002
  • Objective: Through the literatures on the effects of Buthus martensii Karsch, we are finding out the clinical possibility and revealing the more effctive to intractable diseases. Method: We investigated the literatures of Oriental Medicine and experimental reports about Buthus martensii Karsch. Results: 1. The taste of Buthus martensii Karsch is salty, hot and toxic, and the effect of this is tetanus, headache, facial palsy and convulsion. 2. The venom of Buthus martensii Karsch is anaesthetic and toxic protein, composed of buthotoxin, lecithin, trimethylamine, betaine, taurine, cholesterol, stearic acid and palmitic acid and similar to the snake venom. 3. The pharmacological effects ofButhus martensii Karsch are anti-convulsion, depressor, anesthesia, anti-thrombosis and anti-cancer. 4. Symptoms of Buthotoxin poisoning are local pain, vomiting, fever, hypertension and palpitaion, and critical condition to Dyspnea, coma and death.

Synthesis of Carboxybetaine Type Surfactants (카르복시베타인형(型) 계면활성제(界面活性劑)의 합성(合成))

  • Shon, Joo-Hwan;Kim, Yu-Ok
    • Journal of the Korean Applied Science and Technology
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    • v.4 no.2
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    • pp.49-55
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    • 1987
  • Twelve of the alkylcarboxybetaine derivatives such as 2-(trimethylammonio)dodecanvate, 2-(trimethylammonio) tetadecanoate, 2-(trimethylammonio)hexadecanoate, (dimethyldodecylammonio)ethanoate, (dimethyltetradecylammonio)ethanoate, (dimethylhexadecylammonio)ethanoate, 2-( dimethyltetradecylammonio)propanoate, 2-(dimethyltetradecylammonio)propanoate, 2-(dimethylhexadecylammonio)propanoate, 2-(dimethyldodecylammoino)-3-phenylpropanoate, 2-(dimethylhexadecylammonio)-3-phenylpropanoate have been synthesized from the 2-baomoalkanoic acid, trimethylamine, dimethylalkylamine, alanine and phenylalanine, respectively. These reaction products have been separated by ion-exchangechromotography and detected by paper chromotography, elementary analysis and infrared spectroscopy.

The Improvement of Dyeing Property of Cotton Fabric by Cationic Agent Treatment (카티온화제 처리에 의한 면직물의 염색성 개선)

  • Sung, Woo Kyung;Park, Sang Joo;Lee, Won Chul
    • Textile Coloration and Finishing
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    • v.9 no.1
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    • pp.33-43
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    • 1997
  • This study was carried out to investigate increasing the neutral substantivity of anionic dyes for cationic-modified cotton fabric treatied with cationic agent. In the present study 3-chloro-2-hydroxypropyltrimethyl ammonium chloride for reactive cationic agent was produced by reaction of epichlorohydrine with trimethylamine hydrochloride. 3-chloro-2-hydroxypropyltrimethylammonium chloride was converted in an aqueous solution of sodium hydroxide into glycidyltrimethylammonium chloride. By treating with this epoxy reagent the hydroxyl groups of cotton fabric was modified to trimethylammonium group through ether linkage. The introduction of new cationic sites into cotton fabric by pretreating with cationic agent improves the substantivity of anionic dyes with the cotton in dyebath. Dyeablity of the modified cotton fabric for direct and reactive dyes was much improved in a non-electrolytic or a little electrolytic dyebath and was proportional to the concentration of cationic agent.

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Changes in the Physicochemical Properties and Color Values of Salted and Fermented Shrimp (새우젓 발효 중 이화학적 특성 및 색도 변화)

  • Cho, Hee-Sook;Kim, Kyung-Hee
    • Journal of the East Asian Society of Dietary Life
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    • v.20 no.1
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    • pp.69-76
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    • 2010
  • This study was performed to examine the effects of salt addition level on changes in the physicochemical properties and color values of salted shrimp during fermentation. Fresh shrimp were salted with different concentrations (8, 18, 28%) of Chunil salt and fermented at $20^{\circ}C$ for 160 days. In the 8% salted shrimp treatment, volatile basic nitrogen (VBN), amino nitrogen (AN), and trimethylamine (TMA) contents rapidly increased during the fermentation period, while in the 18 and 28% salt groups these increases were reduced throughout the 160 days of fermentation. Thiobarbituric acid (TBA) values increased rapidly for 120 days of fermentation and then decreased. The thiobarbituric acid values of the 18, and 28% salted and fermented shrimp groups were lower than the that of the 8% group. In addition, Hunter's color L, a, and b values decreased as the fermentation period increased.

Fabrication of ZnO thin film gas sensor for detecting $(CH_3)_3N$ gas ($(CH_3)_3N$ 가스 감지용 ZnO 박막 가스 센서의 제조)

  • 신현우;박현수;윤동현;홍형기;권철한;이규정
    • Electrical & Electronic Materials
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    • v.8 no.1
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    • pp.21-26
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    • 1995
  • Highly sensitive and mechanically stable gas sensors have been fabricated using the microfabrication and micromaching techniques. The sensing material used to detect the offensive trimethylarnine ((CH$_{3}$)$_{3}$N) gas is 6 wt% $Al_{2}$O$_{3}$-doped, 1000.angs.-thick ZnO deposited by r. f. magnetron sputtering. The optimum operating temperature of the sensor is 350.deg.C and the corresponding heater power is about 85mW. Excellent thermal insulation is achieved by the use of a double-layer structure of 0.2.mu.m -thick silicon nitride and 1.4.mu.m-thick phosphosilicate glass(PSG) prepared by low pressure chemical vapor deposition(LPCVD) and atmospheric pressure chemical vapor deposition(APCVD), respectively. The sensors are mechanically stable enough to endure at least 43, 200 heat cycles between room temperature and 350.deg. C.

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Studies on the One Bath Exhaust Dyeing System of Polyester/Cationized Cotton Blends with Disperse Dye/Reactive Dye (폴리에스테르/카티온화 면 혼방품의 분산염료/반응성염료에 의한 일욕염색계에 관한 연구)

  • 성우경
    • Textile Coloration and Finishing
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    • v.10 no.2
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    • pp.18-28
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    • 1998
  • in order to overcome disadvantage of the conventional two bath dyeing method of polyester/cotton blends, it had prompted significant effort to the development of the one bath dyeing method which can accomplish sayings in time, energy and water usage. Also, when dyeing polyester/cotton blends by the one bath dyeing method, the high salt concentrations needed for the reactive dye can cause particles of disperse dye, used for the polyester component, to aggregate. A supplementary problem that can occasionally be happened is the change of hue that occurs on dyed polyester in an alkaline dyebath. To improve dyeing property of polyester/cotton blends, cotton component was pretreated with epichlolohydrine-trimethylamine hydrochloride in aqueous solution of sodium hydroxide to produce a cationized cotton that can be dyed under neutral conditions with reactive dye in a non-electrolytic or il little electrolytic dyebath. The one bath dyeing method of polyester/cationized cotton blends with disperse dye/reactive dye mixture resulted in a satisfactory dyeing property and color yield in comparison with ordinary two bath dyeing method.

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Synthesis of New Biocompatible Multi-Functional Textile Finishing Agent

  • Ko, Young-Il;Jung, Chul-Won;Kim, Sung-Hoon;Bae, Jin-Seok
    • Proceedings of the Korean Society of Dyers and Finishers Conference
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    • 2009.03a
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    • pp.160-161
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    • 2009
  • A methacrylate monomer having phospholipid polar group and cell membrane structure is known as highly biocompatible. Based on these properties, new biocompatible multi-functional textile finishing agent was developed using phospolipid copolymer. 2-Methacryloyloxyethyl phosphorylcholine (MPC) was synthesized using 2-hydroxyethyl methacrylate (HEMA), 2-chloro-2-oxo-1,3,2-dioxaphospholane (COP), trimethylamine (TMA) and triethylamine (TEA), and then polymerized to prepare MPC copolymer by radical polymerization using AIBN. The structures of MPC and MPCE were characterized by FTIR and 1H NMR and will be evaluated as textile finishing agent in further study.

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Characteristics for Adsorption and Thermal Decomposition of Ammonia and Trimethylamine on Honeycomb Photocatalyst (허니컴형 광촉매에 대한 암모니아와 트리메틸아민의 흡착 및 열 분해 특성)

  • 김대중;손건석;고성혁;윤승원;송재원;강진아;이귀영;이재의
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 2001.11a
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    • pp.295-296
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    • 2001
  • 동물 축사, 폐수 및 하수처리장, 피혁공장, 생선처리시설 등에서 주로 발생하는 암모니아(NH$_3$) 및 트리메틸아민(($CH_3$)$_3$N)과 같은 악취 물질 제거에 대한 많은 연구가 진행되고 있다. 악취 물질에 대한 처리 기술에는 직접 산화법, 고온 연소법, 효소분해법, 흡착법, 촉매 산화법, 플라즈마 제거법 등과 같은 악취 물질을 분해 제거하는 방법과 단순히 악취를 은폐시키는 마스킹법이 있다. (중략)

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Semiconductor Sensor for Detecting Freshness of Sea Foods (생선의 신선도 측정을 위한 반도체 센서)

  • Bak, Sung-Hyun;Kwon, Tae-Ha
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.29 no.4
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    • pp.272-278
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    • 1993
  • The trimethylamine-sensing characteristics of ZnO based thin film semiconductors and the sensitivity enhancement by squttering conditions have been investigated to develop a new type sensor for detecting fish freshness. The sensor fabricated with a 300nm of ZnO thin film with 4 wt% Al sub(2) O sub(3) and 1 wt% TiO sub(2) exhibited the highest sensitivity of 155 at 30$0^{\circ}C$ of working temperature and to the 240 ppm TMA gas. Deposition of ZnO thin film using a RF magnetron sputter was carried out at a pressure of 10 super(-2) Torr in pure oxygen gas with an RF power of 100W. The sensor exhibited a large response to the actual gases produced by a mackerel at an early stage of decomposition.

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Ligand Binding energy of CdS/ZnS various interfaces: ab-initio study intimately related with anisotropic CdS/ZnS quantum rod growth

  • Jeong, Incheol
    • Proceeding of EDISON Challenge
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    • 2015.03a
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    • pp.292-295
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    • 2015
  • The effect of Ligand Binding energy in quantum rod (CdS/ZnS) plays a critical role in anisotropic growth. As mimicking large chain of ligands and using the head of the chain, I plan to bind the quantum rod and ligands so that it can grow well consequently. So the ultimate goal of this study is on how ligand binding can affect the growth of this quantum rod. There are preferred surfaces between the quantum rod and ligands, and we empirically know that ligands which bind the quantum rod; Phosphoric oxide (PO), Phosphoric acid(PA), Carboxylic acid(CA), Trimethylamine(TMA), have strong tendency to be attached on the surfaces of CdS/ZnS; ($11{\bar{2}}0$), ($10{\bar{1}}0$), ($000{\bar{1}}$), (0001). I virtually bond the surface and the ligands, and calculated the ligand binding energy after optimizing their structure, utilizing EDISON simulator. After all, I figured out how they are linked each other and how the quantum rod grows.

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