• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.8 no.1
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• pp.41-48
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• 2010

Uranium deposits from an electrorefining process contain about 30% salt. In order to recover pure uranium and transform it into an ingot, the salts have to be removed from the uranium deposits. Major process variables for the salt distillation process of the uranium deposits are hold temperature and vacuum pressure. Effects of the variables on the salt removal efficiency were studied in the previous study[1]. By applying the Hertz-Langmuir relation to the salt evaporation of the uranium deposits, the evaporation coefficients were obtained at the various conditions. The operational conditions for achieving above 99% salt removal were deduced. The salt distilled uranium deposits tend to form the eutectic melt with iron, nickel, chromium for structural material of salt evaporator. In this study, we investigated the hold temperature limitation in order to prevent the formation of the eutetic melt between urnaium and other metals. The reactions between the uranium metal and stainless steel were tested at various conditions. And for enhancing the evaporation rate of the salt and the efficient recovery of the distilled salt, the thermal analysis of the salt distiller was conducted by using commercial CFX software. From the thermal analysis, the effect of Ar gas flow on the evaporation of the salt was studied.

• Journal of Nutrition and Health
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• v.57 no.2
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• pp.211-227
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• 2024

Introduction: Seaweed is a sustainable and underexplored source of bioactive compounds with potent anti-inflammatory activities. However, studies on the interaction between seaweed and genes on inflammation are limited. Purpose: We aimed to evaluate the relationships between seaweed consumption and the polygenic risk scores (PRS) and their interactions with high-sensitivity C-reactive protein (hs-CRP) levels. Methods: Information on seaweed consumption was collected using a food frequency questionnaire, which included laver, kelp, and sea mustard among the items consumed. A total of 31 hs-CRP-related single nucleotide polymorphisms (SNPs) were selected using genome-wide association studies and clumping analysis, and the individual PRS were calculated by weighting the effect size of each allele in the selected SNPs of 39,369 middle-aged (≥40 years) Koreans using the Korean Genome and Epidemiology Study (KoGES)-Health Examinees (HEXA) cohort data. To investigate the interaction between seaweed intake and the PRS on hs-CRP levels >1 mg/L, hazard ratios (HRs) and 95% confidence intervals (CIs) were assessed using multivariable Cox proportional hazards models. Results: During a mean follow-up period of 4.8 years, we recorded 436 patients with elevated hs-CRP levels. Women in the highest tertile of the PRS with the lowest quartile of seaweed intake had an increased incidence of elevated hs-CRP levels compared with women in the lowest tertile of the PRS with the lowest seaweed intake quartile (HR 2.34, 95% CI 1.23-4.45). No significant association was observed among the men. Conclusion: In conclusion, we identified a new interaction between the PRS, seaweed intake, and inflammation in Korean women, and this study suggests that the interaction between the identification of genetic predisposition and dietary seaweed intake may have an impact on determining the risk of developing hyperinflammation in the future.

• Journal of the Korea Society of Computer and Information
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• v.26 no.12
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• pp.237-245
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• 2021

This study investigated the Antimicrobial activity of Rutaceae fruit ethanol extracts against microorganisms-induced skin inflammation in cosmetic materials. Rutaceae fruits were separated in two parts of whole fruit (pulp, pulp fegment membrane, peel) and peel, and extracted with 70% ehtanol. The results demonstrated that Rutaceae fruit ethanol extracts showed antimicrobial activity in 5 strains except Staphylococcus aureus. In particular, the antimicrobial activity against Staphylococcus epidermidis was the best in fresh lemons whole fruit. The antimicrobial activity against Escherichia coli was shown only in fresh lemon peel and fresh trifoliate peel. Additionally, antimicrobial activity against Propionibacterium acnes was shown only in the dried lemon peel. In the results of antimicrobial activity against Pityrosporum ovale, in the case of fresh fruits, citron whole fruits showed the highest effect, followed by lemon whole fruits and mandarin orange peel. And in the case of dried fruits, orange peel showed the highest effect, followed by trifoliate peel, mandarin orange peel and lemon peel. Therefore, it is considered that lemon, which shows antimicrobial activity against all skin inflammation-causing microorganisms, can be used as a natural material for improving skin inflammation in cosmetics.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2011.10a
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• pp.183-184
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• 2011

• The Journal of the Korea Contents Association
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• v.16 no.7
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• pp.465-475
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• 2016

The incidence of inflammatory bowel disease(IBD) has increased continuously in worldwide, but no cure have been discovered. The etiology of IBD may include various factors such as genetics, epigenetic, environment as well as host immune system. Among the environmental factors of IBD, diet heavily influences gut health, especially non-digestible dietary fiber can have a great impact on selective growth of beneficial gut microbiota called probiotics. Seaweeds have been consumed in Asia countries and are a rich source for dietary fiber. Accumulated data have suggested the possibility of utilizing seaweed derived oligosaccharides as prebiotics to prevent IBD and its recurrence. In this review, seaweed derived oligosaccharides such as fucoidan and laminarin regarding gut health and potential therapeutic tools for IBD will be discussed based on studies conducted in vitro and in vivo models.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2008.05a
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• pp.223-224
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• 2008

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2007.11a
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• pp.293-294
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• 2007

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2016.05a
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• pp.73-74
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• 2016

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2008.05a
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• pp.217-218
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• 2008

• Proceedings of the EASDL Conference
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• 2003.04a
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• pp.81-82
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• 2003

국민소득 증대에 따른 사회경제 수준의 향상과 의학발달에 의해 평균 수명이 연장되었다. 이로 인한 인구의 노령화로 노인관련 질환 즉, 류마티스성 관절염, 심장질환 등과 같은 만성 퇴행성질환과 암 등 영양섭취의 불균형과 관련된 질병이 급증되었다. 최근 ROS(reactive oxygen species), PGs(prostaglandins), 및 NO(nitric oxide)가 각종 염증성 질환, 순환계 질환 및 암화 과정에 밀접한 연관이 있기 때문에 이들을 조절할 수 있는 식품류가 각종 질환의 예방을 목적으로 각광을 받고 있다.(중략)