• Title/Summary/Keyword: Salt Effect

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Effect of De-icer Salt on the Durability of Concrete Structure in Winter (겨울철 제설제의 살포가 콘크리트 내구성에 미치는 영향)

  • Cheong Haimoon;Lee Byung-Duck
    • Proceedings of the Korea Concrete Institute Conference
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    • 2004.05a
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    • pp.814-817
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    • 2004
  • Deterioration due to de-icer salt occurs in practice in concrete pavement, dike, barrier and similar structure. This paper reports the results of effect of de-icer salt on. durability of concrete structure in winter. To protect concrete structure from damage by de-icer salt in winter, the exposure test was performed using three countermeasures such as increase in design strength upto $350kg/cm^2$, application of ggbf slag powder, and concrete sealer. Of these, the method of increase in design strength upto $350kg/cm^2$ showed better durability for deterioration by de-icer salt.

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The Effect of Salt Concentrations on the Production of Volatile Organic Acids by Zygosaccharomyces rouxii, a Soy Sauce Yeast (간장에서 분리한 Zygosaccharomyces rouxii의 휘발성 유기산 생성에 미치는 식염농도의 영향)

  • 권동진;하덕모
    • Microbiology and Biotechnology Letters
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    • v.22 no.2
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    • pp.120-125
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    • 1994
  • By using a synthetic medium simulated on the amino acid composition of soybeam, the effect of salt concentrations on the production of volatile organic acid by the strains of Zygosaccharomyces rouxii So-3101, a soy sauce yeast, was studied at the concentrations of 12.5, 18.0, 22.0 and 28.5% NaCl. The growth, consumption of glucose, and production of alcohol, total acid and volatile organic acid, showed the highest values at a concentration of 12.5% NaCl, and those values were decreased with an increase in the salt concentration. The ratio of volatile organic acid to total organic acid was remained at approximately the same level within the range of salt concentrations between 12.5~22.0%, whereas the ratio was decreased at a salt concentration of 28.5%. After incubation for 16 days, 8 volatile organic acids, i.e. acetic, propionic, n-butyric, isobutyric, isovaleric, isocaproic, n-caproic, and heptanoic acids, were detected by gas chromatography. Among the volatile organic acids, acetic acid was produced in the appreciable amiunt and its ratio to the other volatile acids was increased with an increase in the salt concentration.A small amount of isocaproic, propionic, isobutyric and isovaleric acids were produced, and n-caproic, n-butyric and heptanoic acids were detected only at the lower salt concentration.

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Effects of Gamichungyeoldodam-tang(GCDT) in DOCA-saIt Induced Hypertensive Rats (가미청열도담탕(加味淸熱導痰湯)이 DOCA-salt로 유발된 고혈압 백서에 미치는 영향)

  • Baek, Hye-Ki;An, Joung-Jo;Jo, Hyun-Kyung;Yoo, Ho-Ryong;Kim, Yoon-Sik;Seol, In-Chan
    • The Journal of Internal Korean Medicine
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    • v.29 no.3
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    • pp.641-656
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    • 2008
  • This study was done to investigate the effect of Gamichungyeoldodam-tang (GCDT) in DOCA-salt induced hypertensive rats. The results were obtained as follows : GCDT showed safety against cytotoxicity and toxicity in the liver and the kidney. GCDT showed an inhibitory effect on ACE. GCDT significantly decreased the heart rate and the blood pressure in DOCA-salt induced hypertensive rats. GCDT significantly decreased the levels of aldosterone in DOCA-salt induced hypertensive rats. GCDT significantly decreased the levels of dopamine, norepinephrine, and epinephrine in DOCA-salt induced hypertensive rats. GCDT significantly decreased the levels of chloride in DOCA-salt induced hypertensive rats. These results suggest that GCDT might be effective in treatment of hypertension.

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Effect of Ethanolamine Salts and Enhancers on the Percutaneous Absorption of Meloxicam from a Pressure Sensitive Adhesive Matrix

  • Ki, Han-Moe;Cheong, Hyun-Ah;Choi, Hoo-Kyun
    • Journal of Pharmaceutical Investigation
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    • v.37 no.3
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    • pp.173-177
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    • 2007
  • The purpose of this study was to investigate the effect of salt formation on the percutaneous absorption of meloxicam through hairless mouse skin from a pressure sensitive adhesive (PSA) matrix. In addition, the influences of enhancers on the permeation of meloxicam or meloxicam-ethanolamine (MX-EA) salts across the hairless mouse skin were evaluated using a flow-through diffusion cell system. The salt formation of meloxicam resulted in lower permeation rate than the parent drug. $Span^{(R)}$ 80 provided the highest enhancing effect for meloxicam and meloxicam monoethanolamine salt. The maximum amount of the drug that can be loaded without retarding permeation rate was different depending on the compound. No relationship was found between the fluxes of meloxicam or MX-EA salts from saturated solutions and those from PSA matrices containing the same enhancer.

Removal Effect of Residue Pesticide of Organic Acid Salt in Alkali Aqueous Solution (알칼리 수용액상에서 유기산염의 잔류농약 제거효과)

  • Lee, Jae-duk;Lee, Man-Ho
    • Applied Chemistry for Engineering
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    • v.10 no.6
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    • pp.907-912
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    • 1999
  • In this study, removal effect of residue pesticides on vegetable and fruit using organic acid salt in alkali solution were investigated by gas chromatography and measurement of detergency. Generally, for the removal methods of residue pesticides and oily pollution were used chemical detergent or organic solvent. Specially, in our experiment, we only used material of food additives and trisodium citrate were superior to other organic acid salt. It was investigated that removal effect of pesticides was superior to chemical detergent.

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Effect of Salinity on Mechanical Characteristics of Stabilized Dredged Soil (고화준설토의 역학적 특성에 대한 염분의 영향)

  • Kim, Yun-Tae
    • Journal of the Korean Geotechnical Society
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    • v.27 no.9
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    • pp.47-53
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    • 2011
  • Marine dredged soils taken from navigation channels or construction sites of coastal area usually have a lot of salt in pores of clayey soils. This paper investigates effect of salt on mechanical characteristics of non-salt and salt-rich stabilized dredged soil. The stabilized dredged soil (SDS) consisted of dredged soil and cement. Several pairs of SDS with non-salt and salt-rich dredged soils, noted as N-SDS and S-SDS, respectively, were prepared to compare their strengths and compressibility characteristics. The microstructures, strength and compressibility characteristics of N-SDS and S-SDS specimens at 7 and 28 days of curing time were evaluated using scanning electronic microscope (SEM), unconfined compression test, and oedometer test. It was found that salt concentration of clayey soil affected not only the formation of soil structure but also the strength development of mixture. The compression index and swelling index of S-SDS were also greater than those of N-SDS, which indicated that the compressibility of mixture increased due to salt concentration. Salinity in clayey soil had a negative effect on the strength development and compressibility characteristics of stabilized dredged soils.

Effects of Kamigingansikpung-tang on Hypertension Model by DOCA-salt (가미진간식풍탕(加味鎭肝熄風湯)이 DOCA-salt로 유발된 고혈압(高血壓) 병태(病態) 흰쥐 모델에 미치는 영향)

  • Heo, Min;An, Joung-Jo;Jo, Hyun-Kyung;Yoo, Ho-Rhyong;Kim, Yoon-Sik;Seol, In-Chan
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.22 no.5
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    • pp.1240-1249
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    • 2008
  • Kamigingansikpung-tang(KGST) has been used for many years as a therapeutic agent for acute stage of cerebrovascular disease and hypertension in oriental medicine. But the effect of KGST on hypertension and vascular system is not well-known. This study was done to investigate the effects of KGST on hypertension. The results were obtained as follow: KGST showed scavenging activity on DPPH free radical. KGST showed the inhibitory effect on ROS and ACE, and the accelerated SOD activity. KGST significantly decreased the blood pressure and pulse in DOCA-salt induced hypertensive rat. KGST significantly decreased the levels of aldosterone in DOCA-salt induced hypertensive rat. KGST significantly decreased the levels of dopamine, epinephrine in DOCA-salt induced hypertensive rat. KGST significantly decreased the levels of potassium(K+) and chloride(Cl-) in DOCA-salt induced hypertensive rat. KGST significantly decreased the levels of uric acid and creatine in DOCA-salt induced hypertensive rat. KGST has an effect on inhibiting cell damage of the heart, liver, kidney, and adrenal gland. results suggest that KGST might be effective in treatment and prevention of hypertension.

Pharmacological Evaluation of Bamboo Salt (죽염의 약리작용 평가)

  • 양지선;김옥희;정수연;유태무;노용남;이숙영;정면우;안미령;최현진
    • Biomolecules & Therapeutics
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    • v.7 no.2
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    • pp.178-184
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    • 1999
  • Bamboo salt has been used for the purpose of precaution and treatment of certain diseases including cancer. Therefore, present study was carried out to ascertain the effects of bamboo salt upon anti-cancer, anti-hypertensive, and anti-diabetic activities as well. To examine the anti-cancer activity of bamboo salt, ICR mice implanted with 1$\times$l0$^{6}$ cells of sarcoma 180 intraperitoneally had been treated daily with bamboo salt A, crude salt, and reagent-grade NaCl (0.2, 1.0, and 2.0 g/kg, p.o.) for 60 days using adriamycin (2 mg/kg) as a positive control. Neither survival rate nor body weight had been significantly influenced by all the treatments indicating that bamboo salt A did not exert the anti-cancer effect on ICR mice. Anti-hypertensive activity was examined in spontaneously hypertensive rats (SHR) which had been administered with bamboo salt A, crude salt, and reagent-grade NaCl (0.1, 0.5, and 1.0% in drinking water) for 28 days using hydralazin (2 mg/kg) as a positive control. Blood pressure and heart rate were measured at 1, 3, and 4 weeks after the starting date. Significant anti-hypertensive activity was not observed in any treated group compared to the positive control group. In order to determine if bamboo salt had anti-diabetic activity, rats in which diabetes had been induced by streptozotocin (45 mg/kg, i.m.) were treated daily with bamboo salt A, crude salt, and reagent-grade NaCl (0.2, 1.0, and 2.0 g/kg, p.o.) for 28 days using insulin (50 U/kg, s.c..) as a positive control. Blood samples were taken and analyzed at 1,2, and 4 weeks after the starting date. Bamboo salt did not cause any decreasing effect on the blood glucose levels. These results clearly demonstrated that bamboo salt A did not exert anti-cancer, anti-hypertensive, or anti-diabetic activities in the present experimental animals.

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Effects of short-term supplementation of erythritol-salt on urinary electrolyte excretion in rats (단기간의 에리스리톨 소금 섭취가 흰쥐의 요 중 전해질 배출에 미치는 영향)

  • Kyung, Myungok;Lim, Ji Ye;Lee, Kyungsun;Jung, Sangwon;Choe, Keunbum;Yang, Chang-Kun;Kim, Yuri
    • Journal of Nutrition and Health
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    • v.47 no.2
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    • pp.99-105
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    • 2014
  • Purpose: This study was conducted in order to investigate the diuretic effects of Erythritol (ET) salt on urinary electrolyte excretion in Sprague-Dawley Rats. Methods: Animals were divided into two groups: Salt group (n = 7) and Salt + ET fed group (n = 7). Animals were provided food and water ad libitum. Supplements were administered orally to animals for one week. Results: Body weights were not statistically different between groups either on Day 1 or Day 7. However, water consumption of the Salt + ET group was significantly higher than that of the Salt group on Day 1 and Day 7. Urine volume of the Salt + ET group was approximately 27% and 38% higher than that of the Salt group on Day 1 and Day 7. In addition, we found that the total amounts of urinary electrolytes, such as sodium and potassium, of the Salt + ET group were significantly higher than those of the Salt group on Day 7. We also found that serum electrolyte concentrations did not differ between two groups. These results demonstrated that salt intake with ET was effective in increasing urinary electrolyte excretion, which might be caused by higher water intake and diuretic effect inhibiting reabsorption of water, sodium, and potassium in renal tubules. Conclusion: The results suggest that short-term supplementation of ET salt can be a potential diuretic agent by inhibiting sodium and potassium reabsorption and inducing loss of water.

Development of Multidiretion Incoming Salt Collector (다방향 비래염분 포집기 개발 및 포집 정확도 검증)

  • Park, Dong-Cheon;Ahn, Jae-Cheol;Kim, Woo-Jae;Oh, Sang-Gyun;Kim, Hyo-Youl;Kang, Byung-Hi
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2011.05a
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    • pp.13-14
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    • 2011
  • Reinforced concrete structures are damaged by concrete carbonation, salt attack, and sulfate attack. The evaluation of the amount of chloride ion from the sea is very important to assess the life expectancy of Reinforced Concrete structures. The incoming salt collector which is developed in Japan has been used until the present, Unfortunately, the incoming salt collector has had a bad reputation which is caused by backward wind. The wind from backward causes the reduction of the amount of collected salt in collector's gauze. The collector was developed for excluding the effect of backward wind. The performance of it was verified from analytic and experimental methods.

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