• LP가스
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• s.76
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• pp.4-4
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• 2001

최근 우리회와 LPG 양수입사, 판매업계는 공동으로 탱크로리에 의한 LNG공급이 가능하도록 개정된 바 있는 가스공사의 공급규정을 철폐해줄 것을 산업자원부에 정식 요청했다.

• 주택과사람들
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• s.218
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• pp.110-111
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• 2008

수많은 이탤리언 레스토랑 중에 어디를 갈까 고민한다면? 청담동 학동사거리에 위치한 미세스 로리에 가보자. 압구정도, 청담동 일대의 '값비싸고 양 적기'로 소문난 음식점들과 달리 '가격은 저렴하면서 맛 좋고, 양 많은 집'으로 유명하니까.

• Journal of the Korean Institute of Gas
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• v.24 no.1
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• pp.10-16
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• 2020

In the safety control and business of liquefied petroleum gas act, LPG supply using bulk lorry of liquefied petroleum gas dealer is possible only to small storage tanks of less than 3 tons in bulk lorry less 10 tons. The government has announced plans to extend the bulk lorry supply to storage tanks of less than 10 tons, reflecting improved safety management capabilities of liquefied petroleum gas dealer. Therefore, in order to supply LPG to the storage tank stably through the bulk lorry, the technical evaluation of the existing bulk lorry LPG supply system is needed. In this study, we will investigate the status of LPG supply system in Korea through bulk lorry and investigate safe LPG supply method. First, we conducted a survey on the supply of LPG storage tanks through bulk lorry to related companies to collect basic data. Based on the results of the surveys, we will conduct field surveys to provide basic data for stable LPG supply.

• Applied Chemistry for Engineering
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• v.30 no.3
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• pp.303-307
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• 2019

Sophorolipid is a biological surfactant of the glycolipid structure produced by Candida bombicola, which generally exists as a mixture of acidic and lactonic forms. In this study, we investigated physico-chemical properties, antibacterial activities, and cytotoxicity of the sophorolipid containing more than 96% of the lactonic form, produced by the gene regulation of production strains and application of a metabolic engineering technique. The lactonic sophorolipid showed a weak acidity in the range of pH 3.2~4.6 when diluted in water at the concentrations from 1 to 0.001 wt%. The $pK_a$ value of the lactonic sophorolipid was estimated to be around 4.3 from the acid-base titration curve. The critical micelle concentration (CMC) of the lactonic sophorolipid was $10^{-2}wt%$, at which the surface tension of aqueous solution was reduced to 36 mN/m. The lactonic sophorolipid showed the minimum inhibitory concentrations (MIC) of $1{\times}10^{-3}$ and $5{\times}10^{-3}g/mL$ against Propionibacterium acnes and Corynebacterium xerosis, respectively. The MTT (3-(4,5-Dimethylthiazol-2-yl)-2,5-Diphenyltetrazolium Bromide] assay showed that cytotoxicity of the lactonic sophorolipid was ten times lower than that of triclosan.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.34 no.4
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• pp.317-323
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• 2008

Some surfactants known as biosurfactants, are produced biologically by yeast and bacteria from various substances. They are more effective and environmentally friendly than many other synthetic surfactants. Antimicrobial activities of sophorolipids produced by Candida bombiocola were investigated against various microorganisms. Minimal Inhibitory concentration (MIC) of sophorolipid against S. mutans, C. xerosis, and P. acnes were 0.005, 0.05, and 0.005%, respectively. The antimicrobiological activities were more effective than those of SLS and APG. Skin exfoliating and moisturizing effects of vehicles with the sophorolipids were tested. The skin turnover time of aqueous solution with 0.25% sophorolipids was similar to that of aqueous solution with 5.0% lactic acid. Higher moisturizing effects on skin showed as the concentration of sophorolipids increased. We suggest that the sophorolipids can be used for cosmetics as an antimicrobiological agent and an active materials of skin moisturizing and exfoliating.

• Journal of Korean Society of Disaster and Security
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• v.10 no.2
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• pp.29-34
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• 2017

LPG is a substance that requires a lot of attention because it can cause fatal damage to people and environment when an accident occurs. LPG is frequently accidents in transportation facilities as well as fixed facilities, among which LPG tank lorries are the most frequent accidents. When the LPG tank is evacuated, the LP gas leaks into two phases, leaks mostly to the gas and leaks to some liquid. At this time, the leaked gas will also sink downward because it is heavier than air, and if it continues to leak, it may form an explosion and explode by the ignition source. The purpose of this study is to present the evacuation distance by analyzing the effect distance of the LPG liquefied petroleum gas in the event of explosion. As a result of calculation of the scattering radius of the fragment, the cylinder fragment was scattered up to 561 m. Therefore, it is appropriate to set the distance to be escaped when the LPG tanker leaks to 561m or more.

• Journal of Gastric Cancer
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• v.9 no.4
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• pp.172-176
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• 2009

Purpose: The rapid urease test is a rapid and reliable method for diagnosing Helicobacter pylori infection. However it requires gastric mucosal biopsies during endoscopy, and the test is not covered by national health insurance for patients with gastric cancer. So, we introduced an alternative method for a rapid urease test using back-table gastric mucosal biopsies from gastrectomy specimen. Materials and Methods: Ninety gastric cancer patients underwent an anti H. pylori IgG ELISA test and gastrectomy. Just after gastrectomy, two gastric mucosal biopsies from the prepyloric antrum and lower body of the gastrectomy specimen were taken from the back table in the operative room, and these were fixed immediately with the rapid urease test kit, and the color change was monitored for up to 24 hours. In this study, H. pylori infection was defined as positive when the serology or rapid urease test showed positive results. Results: The positive rate of the rapid urease test and serology was 91.1% and 77.8%, respectively. The sensitivity, specificity, positive predictive value and negative predictive value of the rapid urease test and serology were 94.3 and 80.5%, 100 and 100%, 100 and 100%, and 37.5 and 15%, respectively. The accuracy of the rapid urease test was higher than that of serology (94.4 vs. 81.1%, respectively). The rapid urease test showed a higher rate of detecting H. pylori infection than that of serology (McNemar's test, P=0.019). Conclusion: The result of the rapid urease test using back-table gastric mucosal biopsies from a gastrectomy specimen is comparable to the reference data of the conventional rapid urease test using gastric mucosal endoscopic biopsies. Therefore, it can be an alternative diagnostic method for H. pylori infection.

• The tire
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• s.12
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• pp.35-38
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• 1968

• LP가스
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• s.106
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• pp.20-23
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• 2006

벌크로리에 의한 LPG공급 가능한 사업자에 대해 알아보자

• Fire Science and Engineering
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• v.7 no.2
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• pp.59-62
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• 1993