• Title/Summary/Keyword: sea-salt

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Comparison of quality changes in brined cabbage with deep sea water salt and a commercial brined cabbage product (해양심층수염 절임배추와 시판 절임배추의 품질변화 비교)

  • Lim, Ji Hoon;Jung, Jee Hee;Kim, Dong Soo;Kim, Young Myoung;Kim, Byoung Mok
    • Food Science and Preservation
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    • v.21 no.5
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    • pp.676-687
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    • 2014
  • This study investigated the quality changes in cabbage brined with deep sea water salt and in a commercial brined cabbage product. The subject cabbages were separated into two groups: those manufactured in the Lab (ML) and the commercial brined cabbage product (CP). Each group had three brining treatments: with sun-dried salt (S, CS), refined salt (R, CR), and deep sea water salt (D, CD). The salinity level of the ML group was 2.1~2.3%, higher than that of the CP group (1.1~1.5%). The total plate count (TPC) was detected as 5.0 log CFU/g with the S, R, and D treatments at Day 7, but the growth rate of the TPC with the CS, CR, and CD treatments was faster than that with the S, R, and D treatments (6.9~7.7 log CFU/g). A lactic acid bacteria (LAB) level of 5.0~6.6 log CFU/g was also detected in the S, R, and D samples, but only 7.0~7.6 log CFU/g was detected in the CP groups at Day 14. The instrumental hardness levels of the cabbage brined with the deep sea water salts (D and CD) were 3,971 g and 3,932.4 g, respectively, which were significantly higher than those of the samples that were salted with sun-dried salt and refined salt (p<0.05). As for the sensory attributes, S, D, and CD maintained their marketability scores until the end of the storage period for all the properties. CD presented the highest total free amino acid (478.9 mg%), glutamic acid (107.0 mg%), citric acid (428 mg%), and sodium (189 ppm) contents.

An Experimental Study on the Optimum water-cement ratio of Antiwashout underwater concrete (수중불분리콘크리트의 최적 W/C에 관한 연구)

  • 윤재범;어영선;김종수;김명식;백동일
    • Proceedings of the Korea Concrete Institute Conference
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    • 1998.04a
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    • pp.277-283
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    • 1998
  • In this study we changed W/C into 45, 50, 55, 60%, mixed sea sand which is often used as a replacing aggregate according to the lack of recourse with river sand in the ratio of 5:5 and producted antiwashout underwater concrete. We measured slump flow, air value, pH and suspension in the fresh concrete. After testing each W/C through unit weight and compressive strength of specimen which is produced and cured in the air and salt water it was founded that if sea sand was properly used after salt manufacturing, there will be no bad influence to antiwashout underwater concrete. The characteristic of them showed excellent, when W/C was 50%.

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Characteristics of Son Concentrations of PM2.5 Measured at Gosan: Measurement Data between 1998 and 2002 (고산에서 측정한 PM2.5 이온 농도 특성: 1998~2002년 측정자료)

  • 김나경;김용표;강창희;문길주
    • Journal of Korean Society for Atmospheric Environment
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    • v.19 no.3
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    • pp.333-343
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    • 2003
  • The aerosol ionic composition of P $M_{2.5}$ measured at Gosan, Jeju Island, Korea, for 4 years between March 1998 and February 2002 are presented and discussed. The annual mean concentration of non- sea-salt sulfate (nss -S $O_4$$^{2-}$) and ammonium (N $H_4$$^{+}$) ions are high (0.094 $\mu$eq/㎥, and 0.085 $\mu$eq/㎥, respectively). Also, nss-S $O_4$$^{2-}$ and N $H_4$$^{+}$ show high correlation (0.892). The concentrations of most ions are high in springtime. As the result of factor analysis, Gosan area mainly affected by sea-salt, anthropogenic species, and crustal species.ies.

CORROSION BEHAVIOR OF Al-Zn ALLOY AS A SACRIFICIAL ANODE OF ORV TUBES

  • Jin, Huh;Lee, Ho-Kyun;Lee, Jae-Ho
    • Journal of the Korean institute of surface engineering
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    • v.32 no.3
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    • pp.452-455
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    • 1999
  • ORV which vaporizes LNG to NG is consisted of tube and header whose substrate is aluminum alloy. The corrosion of the tube is very severe because of sea water being used as the heating source. In this research to protect ORV substrate material, the corrosion behavior of aluminum alloys was investigated for the sacrificial role of Al-Zn alloy for ORV tubes. The electrochemical behavior of aluminum alloys in sea water was investigated. The corrosion behavior of thermally-sprayed and cladded samples were compared through salt spray tests. Al-Zn alloy can act as a sacrificial anode and cladded Al-Zn alloy has a better corrosion resistance than that of thermally sprayed one. The galvanic effect of Al-Zn to substrate material was conformed from scratched sample tests.

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Correlation Analysis between Climate and Contamination Degree through Multiple Regression Analysis (다중회귀 분석을 통한 기후 및 오손도 간의 상관관계 분석)

  • Kim, Do-Young;Lee, Won-Young;Shim, Kyu-Il;Han, Sang-Ok;Park, Kang-Sik
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2003.05e
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    • pp.49-52
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    • 2003
  • The performance of insulators under contaminated conditions is the underlying and the most factor that determines insulation design for outdoor applications, Among the contamination factors, The sea salt is the most dangerous factor, and the salt factor have closed relation with climatic conditions, such as wind, temperature, humidity and so on, Effect of these factors to insulation system is different of each other, and need to show the correlation by multiple regression analysis techniques. In this paper, predicted and analyzed equivalent salt deposit density (ESDD) by change climatic condition through multiple regression analysis.

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A Prediction on the Pollution Level of Outdoor Insulator with Regression Analysis (회귀분석을 활용한 옥외 절연물의 오손도 예측)

  • 최남호;구경완;한상옥
    • The Transactions of the Korean Institute of Electrical Engineers C
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    • v.52 no.3
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    • pp.137-143
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    • 2003
  • The degree of contamination on outdoor insulator is ons of the most importance factor to determine the pollution level of outdoor insulation, and the sea salt is known as the most dangerous pollutant. As shown through the preceding study, the generation of salt pollutant and the pollution degree of outdoor insulator have a close relation with meteorological conditions, such as wind velocity, wind direction, precipitation and so fourth. So, in this paper, we made an investigation on the prediction method, a statistical estimation technique for equivalent salt deposit density of outdoor insulator with multiple linear regression analysis. From the results of the analysis, we proved the superiority of the prediction method in which the variables had a very close(about 0.9) correlation coefficient. And the results could be applied to establish the Pollution Prediction System for power utilities, and the system could provide an invaluable information for the design and maintenance of outdoor insulation system.

The Distribution of Salt Contamination with the Influence of Geographical Condition (지리적 영향에 따른 염해 오손물질의 분포에 관한 연구)

  • 최남호;국연호;조성인;박강식;한상옥
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2000.07a
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    • pp.695-698
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    • 2000
  • This paper present the result of the investigation, the distribution of salt contamination with the influence of geographical condition. To get the ESDD data, a conventional brush washing method was adapted, and IC(ion chromatography) was used to measure the quantity of anions, such as Cl$\^$-/ and SO$_4$$\^$2-/. And we make an analysis on the distribution of salt contamination with the increase of distance from shore. With 10 month ESDD data, we seek the 95% ESDD value with interpolation method. With these analyses, we had obtained the formulation concerned with the distance from sea. And could know the composition of contamination.

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Manufacturing and Quality Characteristics of Low-salt Seasoned Gim using Spirulina (스피룰리나를 이용한 저염 조미김 제조 및 품질 특성)

  • Kyumin Kim;Jeongseop Lee;Ju-Sang Lee;Jin-Won Seok;Seon-Heui Cha
    • Journal of Marine Bioscience and Biotechnology
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    • v.15 no.2
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    • pp.90-95
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    • 2023
  • This study aimed to develop low-salt seasoned Gim (김) with new functionality to meet the diversification of the export market and consumer demand for Gim, which is one of the four major seafood products in Chungcheongnam-do province. Spirulina, a microalgae containing essential amino acids, vitamins, and minerals, is known to have antioxidant components such as phycocyanin. Therefore, to determine the suitability of spirulina as a seasoning material, we conducted seaweed. It can be used as a substitute for seasoning salt in the development of low-salt seasoned laver with enhanced functionality.

The Change of Longitudinal Salt Movement in the Soil according to the Materials and Place of Salt Movement Prevent at Saemangum Reclaimed Land from the Sea (새만금 해안간척지의 토양염분 차단재료와 차단위치별 토양염분 경시적 변화)

  • Kim, Ju-Soeng;Kim, Do-Gyun;Lee, Im-Kyun;Lee, Jae-Heon;Lee, Yeung-Sang;Chae, Jeung-Seug;Park, Seok-Gon
    • Journal of the Korean Institute of Landscape Architecture
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    • v.45 no.1
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    • pp.117-126
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    • 2017
  • This study was carried out to figure out on the changes of longitudinal salt movement in the soil through the soil according to the materials and thickness of salt prevent materials and the place of salt prevent at reclaimed land from the sea which is one of the most serious problems when tree planting. Changes of soil salinity were different depending on the seasons. In particular, the soil salinity was lower during the rainy season. But during the dry seasons including early summer before the rainy season and winter season, salinity was relatively higher. Among the seven interruption materials, crushed stone, dredged sand and wood chips showed better interruption effects than the other materials. The interruption effect of salt movement was highest in the both of side and bottom interruption treatment of salt movement than the side interruption treatment of salt movement or the bottom interruption treatment of salt movement. The thickness of the layer should be at least 20cm to prevent salinity effectively.