• 제목/요약/키워드: brine

검색결과 442건 처리시간 0.027초

해양심층수와 지하염수의 자원특성 비교분석 (Comparative Analysis of Resources Characteristics for Deep Ocean water and Brine Groundwater)

  • 문덕수;정동호;김현주
    • 한국해양공학회:학술대회논문집
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    • 한국해양공학회 2003년도 추계학술대회 논문집
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    • pp.333-335
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    • 2003
  • Deep Ocean Water is formed within restricted area including polar sea (high latitude) by cooling of surface seawater and globally circulated in the state of insolation with surface seawater. Although not as obvious as estuaries mixing, Brine groundwater is mixture of recirculated seawater and groundwater. Seawater having high osmotic pressure infiltrate into unconfined aquifer where is connected to the sea. The ions dissolved in seawater are present in constant proportions to each other and to the total salt content of seawater. However deviation in ion proportions have been observed in some brine groundwater. Some causes of these exception to the Rule of constant proportions are due to many chemical reactions between periphery soil and groundwater. While Deep Ocean Water (DOW) have a large quantity of functional trace metals and biological affinity relative to brine groundwater, DOW have relatively small amount of harmful bacteria and artificial pollutants.

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처리 조건을 달리한 마늘 장아찌의 향기 성분의 변화 (Change of Flavor Compounds of Pickled Garlic with Different Pickling Treatments)

  • 정현아
    • 동아시아식생활학회지
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    • 제16권3호
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    • pp.299-307
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    • 2006
  • Raw whole garlic was pickled in two different ways, in soy sauce and in brine, to test the change of flavor compounds with aging period. The changes of pH, acidity, hardness and flavors were measured, accompanied with sensory evaluation. The pH of whole garlic in soy sauce and in brine was decreased as the aging period increased. The acidity was increased as pH decreased. Hardness tended to decrease as the aging time increased. For whole garlic in soy sauce and in brine, trans propenyl methyl disulfide, allyl methyl trisulfide, diallyl trisulfide, dimethyl trisulfide, allyl- 2,3-epoxypropyl sulfide, and 2-methyl-l,3-dithiane were increased as the aging proceeded but allyl methyl disulfide and diallyl disulfide tended to decrease. Hardness through the sensory evaluation decreased as the aging time increased. When the overall quality was compared between whole garlic in soy sauce and in brine after 60 days, the latter could be better estimated. Pickled garlic increased the flavor compounds such as trans propenyl methyl disulfide, allyl methyl trisulfide, diallyl trisulfide, dimethyl trisulfide, allyl-2,3-epoxypropyl sulfide, and 2-methyl-l,3-dithiane as the aging proceeded. Therefore, the above flavor compounds are considered as the major ingredients of the characterized flavor of pickled garlic.

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소형 슬러시 제조기의 전열현상에 관한 연구 (Heat Transfer Characteristics of Small Slush Maker)

  • 김도영;김내현;오왕규;최용민;변호원
    • 대한설비공학회:학술대회논문집
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    • 대한설비공학회 2008년도 하계학술발표대회 논문집
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    • pp.346-350
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    • 2008
  • Tests were conducted to obtain heat transfer coefficients during slush formation from 10% sucrose solution. The slush was made by scraping the ice formed on the cylinder. Cold brine was supplied inside of the cylinder to cool the outer surface. Below a certain brine temperature, which was $5^{\circ}C$ in this study, the solution was supercooled, and suddenly turned into ice. The super-cooling increases as the brine temperature increased. During slush formation, the heat transfer coefficient oscillated significantly, due to periodic removal of ice chunk form the surface. The average heat transfer coefficient during slush formation was approximately twice of that obtained during single phase cooling. The heat transfer coefficient was also affected by the brine temperature with increasing heat transfer coefficient at lower brine temperature.

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새우의 Carotenoid 성분에 관한 고찰 (Studies the Carotenoids in the Viscera of the Brine Schrimp(Penaeus Orientalis Kishinouye))

  • Lee, In Kil
    • 한국환경보건학회지
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    • 제11권1호
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    • pp.29-34
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    • 1985
  • The studies on the carotenoids in the viscera the brine shrimp(Penaeus Orientalis Kishinouye) have been carried out. The brine shrimps were caught around the western coastal area of Korea from Aug. to Oct. The individual carotenoids in the acetone extracts were separated and purified by the silica gel TLC. Two isolated carotenoids were investigated and identified by epoxide test, partition test, alkaline hydrolysis, reduction with sodium borohydride and visible absorption spectrophqtometry. As the results of the series of experiments, esterified Astaxanthin was discovered as one of main pigments of Penaeus Orientalis Kishinouye.

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해안 지역 농촌지하수 시스템분석 (화성시 매향리 일대)

  • 김윤영;이기철;정형재;박종철
    • 한국지하수토양환경학회:학술대회논문집
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    • 한국지하수토양환경학회 2003년도 총회 및 춘계학술발표회
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    • pp.422-425
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    • 2003
  • Many pumping station of Maehang-ri of Hwasung city are established for irrigation water supply, and brine permeation phenomenon is happening thereby. Proposed optimum pumping fluid amount conclusion model that use tidal efficiency and Ghyben-Hertzberg theory so that brine does not permeate in pumping station hereupon and applied this in study area.

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Brine Shrimp Lethality of the Compounds from Phryma leptostachya L.

  • Lee, Sang-Myung;Min, Byung-Sun;Kho, Yung-Hee
    • Archives of Pharmacal Research
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    • 제25권5호
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    • pp.652-654
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    • 2002
  • Brine shrimp assay-guided fractionation and isolation of the EtOAc soluble fraction of Phryma leptostachya L. (Phrymacaceae) gave two active compounds, phrymarolin II (1) and ursolic acid (2), which were identified by physicochemical and spectroscopic methods. Compound 1 exhibited potent lethality with $LD_{50}$ value of 0.0013 $\mu\textrm{g}$/ml, whereas 2 showed moderate lethality with $LD_{50}$ value of 27.0 $\mu\textrm{g}$/ml against brine shrimp. The cytotoxic activities of 1 and 2 were also evaluated against one murine and five human cancer cell lines employing the sulforhodamin B (SRB) method. Compound 2 exhibited cytotoxic activity against L1210 and SK-MEL-2 cells with $ED_{50}$ values of 3.70 and 9.27 mg/ml, respectively, whereas 1 was devoid of any cytotoxic activity against all cancer cells tested.

제빙환경 변화에 따른 아이스 온 코일의 제빙특성 (Ice Making Characteristics at Ice-on-coil Type Following Change of Ice Making Environment)

  • 정은호;박기원
    • 대한설비공학회:학술대회논문집
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    • 대한설비공학회 2008년도 동계학술발표대회 논문집
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    • pp.319-323
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    • 2008
  • The study experimented to understand the ice making characteristics on to kinds of round tube type and oval tube type using ice maker. The experiment were carried out under various conditions, that used brine temperature $-10{\sim}-6^{\circ}C$, brine flow rate $1.0{\sim}1.8\;m/s$ and inlet water temperature $6{\sim}-12^{\circ}C$ etc. Mass of ice per making area increased according to the decrease of the brine temperature and inlet water temperature, but that was increased according to the increase of the brine flow rate.

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Mechanical and acoustic behaviors of brine-saturated sandstone at elevated temperature

  • Huang, Yan-Hua;Yang, Sheng-Qi
    • Geomechanics and Engineering
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    • 제17권2호
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    • pp.215-225
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    • 2019
  • The mechanical behavior of rock is essential to estimate the capacity and long-term stability of $CO_2$ storage in deep saline aquifers. As the depth of reservoir increases, the pressure and temperature that applied on the rock increase. To answer the question of how the confining pressure and temperature influence the mechanical behavior of reservoir rock, triaxial compression experiments were carried out on brine-saturated sandstone at elevated temperature. The triaxial compressive strength of brine-saturated sandstone was observed to decrease with increasing testing temperature, and the temperature weakening effect in strength enhanced with the increase of confining pressure. Sandstone specimens showed single fracture failures under triaxial compression. Three typical regions around the main fracture were identified: fracture band, damaged zone and undamaged zone. A function was proposed to describe the evolution of acoustic emission count under loading. Finally, the mechanism of elevated temperature causing the reduction of strength of brine-saturated sandstone was discussed.

생선회의 육질향상에 미치는 저온 브라인 침지시간의 영향 (Effect of Cold Brine Immersion Time on Sliced Raw Fish Texture)

  • 심길보;이기봉;김태진;이근우;김건배;이인수;조영제
    • 수산해양교육연구
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    • 제15권1호
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    • pp.57-66
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    • 2003
  • The purpose of the present study was to investigate physicochemical changes in olive flounder and korean rockfish muscle subjected to the cold brine, and to find the optimal immersion condition. Effects of various immersion conditions in a sliced raw fish quality were investigated in the rigor index, breaking strength, ATP related compounds, and lactate accumulation in the muscle. The onset of rigor-mortis was accelerated by the increase of immersion time. Also, the time reaching full rigor was shortened remarkably too. However, the rigor index of samples immersed in the cold brine decreased more than that of samples killed instantly. Rigor index was the highest in samples killed instantly, followed by 2.5 min, 5min, 7.5 min, 10 min and 15 min in order. Breaking strength of all samples immersed in the cold brine decreased significantly after reaching the maximum values. The content of ATP related compounds in olive flounder, korean rockfish were $12.0{\mu}mole/g$ and $8.3{\mu}mole/g$, respectively. However, ATP decreased in the samples immersed in the cold brine. The content of ATP was lower, at the optimal condition and then it was increased. Also, lactates increased, at the optimal condition and then it decreased, in contrast with the ATP. The results suggested that the optimal immersion condition of olive flounder and korean rockfish was at -${12.5}^{\circ}C$ for 5min.

멸치 Vinegar 절임시의 산도와 효소 활성 (ENZYME ACTIVITY AND ACIDITY IN VINEGAR PICKLING OF ANCHOVY)

  • 하봉석
    • 한국수산과학회지
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    • 제3권4호
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    • pp.207-212
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    • 1970
  • 멸치절임의 숙성 및 저장 중의 효소 활성 VBN, 세균수, 식염 함유량, 산도, amino-N pH 그리고 지방의 산가에 다음과 같은 결과를 얻었다. 1) Protease 활성은 염수 염장 중에는 증가하고 절임 중에는 식초산의 영향으로 감소하고 이후 차차 거의 일정하게 변화하며 이에 따라 amino-N는 대개 증가하여 숙성한다. 2) Lipase 활성은 염수 염장 중에는 감소하며 vinegar의 첨가로 일단 증가하였다가 절임중에는 증감의 일정한 경향을 볼 수 없다. 그리고산도는 대개 증가하고 있다. 3) VBN와 NaCl 농도는 염수 염장 중에는 급격히 증가하고 절임중에서는 VBN는 완만한 증가를 하며 NaCl 농도는 기의 변화가 없었다. 4) 세균수는 염수 염장함으로써 줄었다가 다시 증가하며 절임함으로써 급격한 감소를 보이고 그 이후에는 일정한 수를 유지 하였다. 5) 절임 제품의 저장성을 유지하기 위해서는 육질의 산도가 $2\%$ 이상이 되도록 vinegar의 산도를 높혀 주어야한다. 6) 염수 염장하는 기간은 8일이 적합하였으며 VBN, 산도, amino-N, lipase 활성 및 관능 검사 성적을 보아서 절임한 후 47일까지 보장할 수 있고 32일 때가 가장 맛이 좋았다.

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