• Bulletin of the Korean Chemical Society
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• 제13권4호
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• pp.388-391
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• 1992

A chemical investigation of the fruits of Piper retrofractum (Piperaceae) has led to the isolation and characterization of a novel piperidine alkaloid, piperoctadecalidine together with three known alkaloids piperine, pipernonaline and guineensine. The structure of the new compound was detemined to be (2E,4E,14Z)-N-(2,4,14-Octadecatrienoyl) piperidine by spectral and synthetic methods.

• Bulletin of the Korean Chemical Society
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• 제33권7호
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• pp.2435-2438
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• 2012

• Bulletin of the Korean Chemical Society
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• 제25권7호
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• pp.1078-1080
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• 2004

• Bulletin of the Korean Chemical Society
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• 제15권7호
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• pp.529-531
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• 1994

• Bulletin of the Korean Chemical Society
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• 제27권8호
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• pp.1145-1148
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• 2006

Excitability is one of the basic and fundamental mechanisms utilized for signal transmission in living organisms. With reference to the condition by Marek and the condition by Schneider, we found a condition in which excitability with similar shapes can appear by chemical and electric perturbation. Our condition is constructed with 3 chemical channels and 1 electric channel, and can be used as a condition for a chemical spiking neuron and as a unit of a chemical spiking neural network.

• 한국안전학회지
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• 제6권1호
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• pp.39-53
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• 1991

Prior to being prepared the surveilance method and the surveilance system of chemical hazards, the employer's investigastion of the newly-registered-chemical hazards has been to be under obligation along with legislation of the Hazardous Chemicals Control Act and revision of the Industrial Safety & Health Act in 1990. In order to make up the chemical hazards examining plan and to frame the chemical hazards investigating system about the newly-registered chemicals and the existing hazardous chemicals in worksite environments, the KISCO's chemical hazards surveilance program is methodologically researched and presented.

• Bulletin of the Korean Chemical Society
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• 제26권2호
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• pp.215-216
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• 2005

• Bulletin of the Korean Chemical Society
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• 제27권9호
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• pp.1466-1468
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• 2006

• Bulletin of the Korean Chemical Society
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• 제15권8호
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• pp.680-684
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• 1994

Pilocarpine analogs were prepared by empoying a radical cyclization reaction as a key step for the five-membered ring formation.

• 한국안전학회지
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• 제5권1호
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• pp.67-76
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• 1990

This research was to describe the organizational safety climate, to examine its implication, and to improve the strategies of industrial accident prevention in chemical industry in Korea. The subjects were 207 directors of department of safety in chemical industry, asked to respond questionnaire sent by mailing. The data in this research were analyzed by SPSS PC＋. The results were as follows ： 1) 24.2％ of surveyed chemical industry had department of safety. 2) 53.6％ of suueyed chemical industry had safety education program. 3) 53％ of employees in surveyed chemical industry were satisfied with supply of personal protective equipments.