• Title/Summary/Keyword: salt well

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Two Brackish Cyclopoid Copepods from Southern Coast of Korea

  • Yoon, Hong-Ju;Chang, Cheon-Young
    • Animal Systematics, Evolution and Diversity
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    • v.24 no.3
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    • pp.241-250
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    • 2008
  • Two brackish cyclopoid species are reported mostly from the estuaries and salt marshes in the southern coast of Korea: Limnoithona sinensis (Burckhardt, 1913) and Apocyclops borneoensis Lindberg, 1954. The two species as well as the genera are newly added to Korean fauna. Herein, the redescription is provided with the systematic accounts and detailed illustrations of them.

Optimal Groundwater Management Model for Coastal Regions Using Parallel Genetic Algorithm

  • Park, Nam Sik;Hong, Sung Hun;Shim, Myung Geun
    • Proceedings of the Korea Water Resources Association Conference
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    • 2004.05b
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    • pp.77-89
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    • 2004
  • A computer model is developed to assess optimal ground water pumping rates and optimal locations of wells in a coastal region. A sharp interface model is used to simulate the freshwater and salt water flows. Drawdown, upconing, saltwater intrusion and the contamination of well are considered in this model. A genetic algorithm with parallel processing is used to identify the optimal solution.

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Characterization of Nitrate Uptake Mediated by Soil Bacterial Strains

  • Ahn, Hae-Jin;Cho, Kwang-Hyun;Kim, Young-Kee
    • Proceedings of the Korean Biophysical Society Conference
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    • 2002.06b
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    • pp.42-42
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    • 2002
  • Salt accumulation in agricultural soils reduces the growth and productivity of crops. Although scientists have been studied the impacts of salinity on plants, the physiological mechanism of adaptation to salinity has not been well understood. Practically, salinity in irrigated soil of green and glass houses keeps increasing in Korea by the massive application of nitrogen fertilizer.(omitted)

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Spectrophotometric determination of acetylsalicylic acid with copper-$\alpha$-picolin complex in tetrachloromethane ($\alpha$-picolin동에 의한 aspirin의 용매 흡광도 정량법)

  • 백남호;박만기
    • YAKHAK HOEJI
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    • v.13 no.2_3
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    • pp.80-83
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    • 1969
  • Acetylsalicylic acid gives a water-insoluble violet complex with $<\alpha>$-Picolin-Cu(II) reagent. The Complex is extractable well with a mixture of $<\alpha>$-Picolin-tetrachloromethane solution. The Complex salt dissolved in the mixed solution shows a maximum absorption at 620 m$<\mu>$. It has a melting point at $171^{\circ}C-$173^{\circ}C and molar ratio of Acetylsalicylic acid: Cu(II): $<\alpha>$-Picolin was estimated as 2:1:2 by continuous variation method and chelate titration method.

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A Study on the Characteristics of Saline Groundwater and Its Well Development in the Western Coastal Area of Jeju Island (제주 서부 해안 지역 염지하수 특성 및 관정 개발에 관한 연구)

  • Cho, Eun-Il;Ko, Tak-Kyun;Lee, Min-Gyu;Kam, Sang-Kyu
    • Journal of Environmental Science International
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    • v.27 no.8
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    • pp.677-688
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    • 2018
  • The purpose of this study was to minimize salt water intrusion into freshwater aquifers and limit the development of freshwater aquifers, by selecting an appropriate excavation depth of in the western coastal area of Jeju Island. The study site was mostly basaltic lava, which was mainly composed of trachy basalt. A vertical logging test was conducted to investigate the vertical distribution of the groundwater and saline groundwater interface in the study well. It was found that freshwater groundwater, saline groundwater, and freshwater groundwater are distributed from the surface to approximately 16 m, 16~50 m, and 50~60 m, below the ground, respectively. In order obtain saline groundwater and minimize the inflow of freshwater into this well, the drilling depth should be limited in the range of 16~50 m from the surface. Thus, saline groundwater well development should be carried out with reference to the measurement results, which depend on the drilling depth and EC (electrical conductivity) obtained with drilling apparatus for geology and ground handling.

Effect of Calcium Supplement on Bioavailability of Calcium in Rats Fed Soy Protein Diet (칼슘 보충제가 콩단백식이를 급여한 흰쥐의 체내 칼슘 이용성에 미치는 효과)

  • 원향례;오주환
    • The Korean Journal of Community Living Science
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    • v.13 no.2
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    • pp.53-61
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    • 2002
  • This study is to find out how the 4 types of calcium salt such as calcium carbonate, calcium phosphate, calcium lactate and calcium citrate in soy protein diet, the vegetable protein source, affect the calcium utilization in the body. To do so, calcium, phosphate and creatinine concentration and ALP activity in blood as well as the content of calcium and ash, the length, weight strength, and the calcium utilization in the bone were measured. Four groups of Sprague-Dawley male rats with the weight of around 180g were fed for 3 weeks with the experimental diet. Each group was fed with the isolated soy protein containing 14% of the diet and the above mentioned 4 types of calcium salt as the calcium source. The results are as follows; 1. There were no differences of the feed intake, weight gain, and feed efficiency among groups. 2. ALP activity in blood was sinificantly high in calcium lactate group(P<0.05), but there were no differences of concentration of calcium, phosphates, and creatinine in blood among groups. 3. The weight, calcium content, calcium ratio in ash and the strength of bone were low when calcium lactate was provided(P<0.05). 4. The content of calcium in the liver was high in calcium lactate group and calcium citrate group(P<.0.05). 5. The exceretion of feces was low in calcium lactate group(P<0.05) and the excretion of urine was also relatively low. In addition, the ratio of absorption and the retention of calcium were high(P<0.05). In summary, out of four types of calcium salt such as calcium carbontate, calcium phosphate, calcium lactate and calcium citrate when calcium lactate was provided the ALP activity in blood was high and the weight, calcium content, calcium ratio in ash and the strength of bone were low. In calcium utilization, the ratio of absorption and retention of calcium were high, however it has lower effect than 3 other calcium types in improving weight, the content of calcium and the strength of bone.

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The Effect of Sodium Sulfate in Liquid or Solid Form on Reactive Dyeing and Fastness Properties of Cellulose Knitted Fabric (액상 또는 분말망초 Type에 따른 Cellulose 편성물의 반응성염료에 대한 염색성과 견뢰도 연구)

  • Kim, Mi-Ri;Lee, Hae-Jung;Lee, Jung-Jin
    • Textile Coloration and Finishing
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    • v.22 no.4
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    • pp.341-348
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    • 2010
  • Sodium sulfate is commonly added in reactive dyebath in order to increase substantivity of the reactive dye to cellulose fiber by reducing repulsion between anionic dye and fiber. While sodium sulfate is mostly used in solid form, it is inconvenient to dissolve a large amount of powder sodium sulfate. Furthermore, if there is undissolved salt in dyebath it might cause unlevel dyeing. In this study, sodium sulfate in liquid or solid form was used in dyeing of cellulose fabric with reactive dyes of three primary color and the effect of type or amount of sodium sulfate on dyeing and fastness properties was investigated. When the amount of sodium sulfate rose to 30-50 g/l, K/S value of the dyed fabric markedly increased; further rise in sodium sulfate concentration resulted in slow increase in K/S value. For light color, optimum amount was about 30 g/l in solid form and 50-100 g/l in liquid form while, for medium to deep color, it was 50 g/l and 100-150 g/l in solid and liquid form, respectively. When using each optimum amount of salt in solid or liquid form for medium color, shape of dyeing curve as well as exhaustion was similar to each other. On the whole, similar color fastness results were obtained regardless of type or amount of sodium sulfate.

Clinical Review of Hypertensive Patients Admitted in the Hospital (병원에 입원한 고혈압 환자에 대한 조사연구(I))

  • Choi, Young-Hee;Mo, Kyng-Bin
    • Journal of Nutrition and Health
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    • v.9 no.4
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    • pp.47-53
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    • 1976
  • As the seriousness of hypertension in adults is increasingly recognized, attention is being focussed on its control through continuous health supervisions. Complications arising from high blood pressure exceed those of many other adult health problems and affect the nursing needs of these patients. In order to contribute to effective nursing care planning and improved health supervision, 248 medical records of hypertensive patients admitted to Internal Medicine at Ewha Medical Center from January 1971 to August 1976 were examined. Results were as fellows: 1. The sample group averaged 5.0% of the total number of patients admitted to internal medicine during the period studied. The proportion increased slightly with each successive year. 2. Patients with hypertension averaged 31.4% of all patients with cardiovascular discease. This proportion was stable over the period. 3. Hypertensive patients were primarily in their 40s. The average age was 55.1 years. 4. Women were most frequently affected in their 60s and men in their 40s. 5. The bloo pressure of these in their 30s was not well controlled on discharge. Rates for those in their 30s averaged 151.5/107mmhg, for those in their 40s 161.5/110mphg, and for those in their 60s 169/100mmhg. 6. Complications increased with each age range from the 40s to the 60s for both men and women. 7. Complications related to systolic hypertension occurred most frequently when the rate exceeded 200mmhg. Cerebral vascular accident was the primary complication, presenting implications for nursing intervention. 8. Complications related to diastolic hypertension occurred most frequently when the rate was in the $110{\sim}129mmhg$ range. C.V.A. again was the primary complication needing nursing care planning. 9. Diets ordered for patients were low salt 79.%, salt free 4.19%, diabetic 6.1%, and protein free ('no protein') 2.0%. Caloric, salt end protein levels were not defined. Recommendations based on the findings were directed to diet and other therapies.

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A Historical Study of Beef Cooking - VII. Hoe(raw beef) - (우육(牛肉) 조리법(調理法)의 역사적(歷史的) 고찰(考察) - 1945년 이전의 문헌을 중심으로 VII.(膾) -)

  • Kim, Tae-Hong
    • Journal of the Korean Society of Food Culture
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    • v.14 no.4
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    • pp.385-393
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    • 1999
  • The purpose of this paper on Hoe (raw beef) is to investigate various kinds of its recipes, with equal focus on seasonings and sauces as well as its main and sub ingredients. The recipes of Hoe can be broadly classified into four large groups such as Salkogi Hoe(Red meat Hoe), Hankazi Naechang-yook Hoe(made from internal organs), Jap Hoe(1)(miscellaneous Meat Hoe) and Jap Hoe(II)(rolled with a whole pinenut) while the cook books written before 1945 indicate that the number of recipes reaches up to 21. The recipe of Salkogi Hoe comprises following three steps. Cut raw beef into thin strips and season them if necessary, then sprinkling sufficient pinenut powder on the strips. Its main sauce is hot pepper paste with vinegar. The recipe of Hankazi Naechang-yook Hoe uses kidney, manyplies, liver and tripes as main ingredients. Kidney should be thinly sliced with mixture of salt, seasame salt, seasame oil, and pepper as its seasonings. Regarding Manyplies, liver and tripes, there exists two possible ways to season them after cutting into strips. You can season with sesame oil and pepper or only with salt. Main ingredients of Jap Hoe(I) consist of beef, pork, kidney, manyplies, liver and tripes, among which minimum two ingredients are selected. Ingredients selected are sprinkled with pinenut powder after cutting into thin strips. And Hot pepper paste with vinegar is used as main sauce. The recipe of Jap Hoe(II) is to cut manyplies into pieces of 2Cm by 5 Cm without removing their black part and roll each piece with a whole peanut in such a manner that the peanut sticks from rolled piece.

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Screening of Multiple Abiotic Stress-Induced Genes in Italian Ryegrass leaves

  • Lee, Sang-Hoon;Rahman, Md. Atikur;Kim, Kwan-Woo;Lee, Jin-Wook;Ji, Hee Chung;Choi, Gi Jun;Song, Yowook;Lee, Ki-Won
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.38 no.3
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    • pp.190-195
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    • 2018
  • Cold, salt and heat are the most critical factors that restrict full genetic potential, growth and development of crops globally. However, clarification of genes expression and regulation is a fundamental approach to understanding the adaptive response of plants under unfavorable environments. In this study, we applied an annealing control primer (ACP) based on the GeneFishing approach to identify differentially expressed genes (DEGs) in Italian ryegrass (cv. Kowinearly) leaves under cold, salt and heat stresses. Two-week-old seedlings were exposed to cold ($4^{\circ}C$), salt (NaCl 200 mM) and heat ($42^{\circ}C$) treatments for six hours. A total 8 differentially expressed genes were isolated from ryegrass leaves. These genes were sequenced then identified and validated using the National Center for Biotechnology Information (NCBI) database. We identified several promising genes encoding light harvesting chlorophyll a/b binding protein, alpha-glactosidase b, chromosome 3B, elongation factor 1-alpha, FLbaf106f03, Lolium multiflorum plastid, complete genome, translation initiation factor SUI1, and glyceraldehyde-3-phosphate dehydrogenase. These genes were potentially involved in photosynthesis, plant development, protein synthesis and abiotic stress tolerance in plants. However, this study provides new insight regarding molecular information about several genes in response to multiple abiotic stresses. Additionally, these genes may be useful for enhancement of abiotic stress tolerance in fodder crops as well a crop improvement under unfavorable environmental conditions.