• Journal of the Korean Geotechnical Society
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• v.21 no.5
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• pp.83-92
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• 2005

The aim of this study was to investigate damage conditions of cut slope structures due to acid rock drainage (ARB) and to assess the acid production potential of various rocks. Acid rock drainage is produced by the oxidation of sulfide minerals contained in coal mine zone and mineralization belt of Pyeongan supergroup and Ogcheon group, pyrite-bearing andesite, and Tertiary acid sulfate soils in Korea. Most of cut slopes producing ARB have been treated with shotcrete to reduce ARD. According to the field observations, ARD had an adverse effect on slope structures. The corrosion of shotcrete, anchors and rock bolts and the bad germination and growth diseases of covering plants due to ARD were observed in the field. The concentration of heavy metals and pH of ARD from cut slope exceeded the environmental standard, indicating a high potential of environmental pollution of surrounding soil, surface water and ground water by the ARD. According to acid base accounting (ABA) of the studied samples, hydrothermally altered volcanic rocks, tuffs, coaly shales, tailings of metallic mine had a relatively high potential of acid production but gneiss and granite had no or less acid production potential. It is expected that the number of cut slopes will increase hereafter considering the present construction trend. In order to reduce the adverse effect of ARD in construction sites, we need to secure the data base for potential ARD producing area and to develop the ARD reduction technologies suitable.

• Journal of Legislation Research
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• no.44
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• pp.315-342
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• 2013

Die Rechtsschutzversicherung ist als eine echte Schadenversicherung eine neue Versicherung, die $Spezialit{\ddot{a}}t$ des versichertes Risikos hat. Das bedeutet, dass der Rechtschutzversicherer nur bestimmte vertraglich vereinbarte Risiken $tr{\ddot{a}}gt$. Diese Risiken sind in den Allgemeinen Bedingungen $f{\ddot{u}}r$ die Rechtsschutzversicheurng (ARB) im Zusammenhang mit Versicherungsvertragsgesetz (VVG) ${\S}$ 125 exact beschrieben. VVG ${\S}$ 125 spricht allegemein von Leistung des Versicherers im vereinbarten versicherten Umfang. Entscheidend ist also die Vereinbarung in den ARB, welche in ${\S}$ 1 die Kostentragung $f{\ddot{u}}r$ den Versicherten als Hauptleistung des Versicherers beschrieben ist. Also in den VVG ${\S}{\S}$ 125 bis 129 gibt es keine Definition ${\ddot{u}}ber$ die Sparte der Rechtsschutzversicherung, jedoch mindestens es $w{\ddot{a}}re$ $m{\ddot{o}}glich$, diese Sparte zu definieren. Um die $k{\ddot{u}}nftige$ Produktentwicklung nicht zu hindern, $enth{\ddot{a}}lt$ die Vorschrift keine gesetzliche Definition der Rechtsschutzversicherung nach Angabe der amtlichen $Begr{\ddot{u}}ndung$. Weil in Korea die Rechtsschutzversicherung relativ neu in Versicherungsmarket ist, sind daher VVG ${\S}{\S}$ 125 ein gutes gesetzgeberisches Vorbild, um pragmatisch und auch dazu rechtswissenschaftlich zu diskutieren und diese fsetzustellen. Im Schritt von Ausdehnungen der juristischen Dienstleistung $w{\ddot{a}}re$ es $n{\ddot{o}}tig$, zu betrachten, wie Leistungsumfang des Versicherers in der Rechtsschutzversicherung erweitert werden kann. And noch dazu ist die Informationspflicht des Versicherers in Hinsicht auf Versicherungsunfall und Leistungsumfang noch weitert zu ${\ddot{u}}berlegen$, weil diese Sparte der Rechtsschutzversicherung noch professioneller als die anderen Versicherungsbereiche ist.

• Korean Journal of Materials Research
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• v.15 no.4
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• pp.240-245
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• 2005

An oxygen free copper was severely deformed by accumulative roll-bonding (ARB) process for improvement of its mechanical properties. Two copper sheets 1 m thick, 30 mm wide and 300 m long are first degreased and wire-brushed for sound bonding. The sheets are then stacked to each other, and roll-bonded by about $50\%$ reduction rolling without lubrication at ambient temperature. The bonded sheet is then cut to the two pieces of same dimensions and the same procedure was repeated to the sheets up to eight cycles $(\varepsilon-6.4)$. TEM observation revealed that ultrafine grains were developed after the third cycle, and their size was slightly increased at higher cycles. Tensile strength of the copper increased with the strain at low strain levels, but it hardly increased from 3 cycles $(\varepsilon>2.4)$ due to occurrence of dynamic recovery, even if the imposed strain increased.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.13 no.1
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• pp.32-39
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• 2010

The air temperature-reducing effects by irrigation reservoir in urban area was investigated at Ilwol Pond (IWP). Air temperature and humidity data were observed at 10minute interval from September 1th, 2008 to August 31th, 2009. Air temperature of IWP and Sumsung Apartment (SAT) were analyzed to examine air temperature-reducing effects by IWP in terms of diurnal and seasonal variation. As a result, the average air temperature difference between IWP and SAT was $0.6^{\circ}C$ and the nighttime shows more air temperature-reducing effects. The dominant air temperature-reducing effects by IWP occurred at fall night and summer daytime. However, the air temperature-reducing effects by IWP is lower to that by Arboretum (ARB).

• Advances in environmental research
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• v.9 no.1
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• pp.1-17
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• 2020

Pharmaceutically active compounds (PhACs) have become an environmental havoc in last few decades with reported cases of antibiotic resistant bacteria (ARB) and antibiotic resistant genes (ARGs), lethal effects over aquatic organisms, interference in natural decomposition of organic matter, reduced diversity of microbial communities in different environmental compartments, inhibition of growth of microbes resulting in reduced rate of nutrient cycling, hormonal imbalance in exposed organisms etc. Owing to their potential towards bioaccumulation and persistent nature, these compounds have longer residence time and activity in environment. The conventional technologies of wastewater treatment have got poor efficiency towards removal/degradation of PhACs and therefore, modern techniques with efficient, cost-effective and environment-friendly operation need to be explored. Advanced oxidation processes (AOPs) like Photocatalysis, Fenton oxidation, Ozonation etc. are some of the promising, viable and sustainable options for degradation of PhACs. Although energy/chemical or both are essentially required for AOPs, these methods target complete degradation/mineralization of persistent pollutants resulting in no residual toxicity. Considering the high efficiency towards degradation, non-toxic nature, universal viability and acceptability, AOPs have become a promising option for effective treatment of chemicals with persistent nature.

• Journal of the Korean Society for Precision Engineering
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• v.34 no.2
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• pp.77-81
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• 2017

CP (Commercially Pure) titanium has been widely used in various industries such as in energy plants and bio-materials because of an excellent corrosion resistance and its non-toxicity to the human body. But there are limitations for usage as structural materials due to low strength. The tensile properties of CP titanium could be improved by microstructure refinement such as in a SPD (Severe Plastic Deformation) process. However, high strengthening of CP titanium wire is impossible by SPD processes like ECAP (Equal Channel Angular Pressing), HPT (High-Pressure Torsion), and the ARB (Accumulative Roll Bonding) process. The study purposes are to increase the strength of CP titanium wire by optimization of the cold drawing process and the harmonization with mechanical properties by heat treatments for the next forming process. The optimization process was investigated with regard to the design of drawing dies and the reduction ratio of cross sections. The elongations of high strength CP titanium were controlled by heat treatment.

• Korean Journal of Environmental Agriculture
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• v.29 no.4
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• pp.315-327
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• 2010

A vast increase of antibiotics usage in concentrated animal feeding operations (CAFOs) over the last few decades has led to an environmental risk due to the presence of antibiotic residuals in different environmental compartments. Especially in Korea, the use of antibiotics in CAFOs is much greater than in other developed countries. One of the primary adverse impacts of antibiotic residuals in the environment is that they readily produce antibiotic resistant bacteria (ARB), which exert detrimental effects on the ecosystem as well as human health. In this article, the impacts of veterinary antibiotic residuals with regard to their quantification and management, and desirable remediation technologies have been widely reviewed. This review article concluded that the continuous monitoring should be required to ensure the safety of antibiotic residuals in the surrounding environments. Furthermore, the management guidelines of antibiotic residuals need to be developed in the future.

• Asian Pacific Journal of Cancer Prevention
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• v.16 no.11
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• pp.4719-4722
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• 2015

Background: This study aimed to determine the utility and a cut-off level of serum squamous cell carcinoma antigen (SCC-Ag) to predict lymph node metastasis in locally advanced cervical cancer cases. We also investigated the correlation between SCC-Ag level and lymph node status. Materials and Methods: From June 2009 to June 2014, 232 patients with cervical cancer stage IB2-IVA, who were treated at Ramathibodi Hospital, were recruited. Receiver operating characteristic (ROC) curves were used to identify the best cut-off point of SCC-Ag level to predict lymph node metastasis. Quantile regression was performed to evaluate the correlation between SCC-Ag levels and pelvic lymph node metastasis, paraaortic lymph node metastasis, and parametrial involvement as well as tumor size. Results: Pelvic lymph node metastasis and paraaortic lymph node metastasis were diagnosed in 46.6% and 20.1% of the patients, respectively. The median SCC-Ag level was 6 ng/mL (range, 0.5 to 464.6 ng/mL). The areas under ROC curves between SCC-Ag level and pelvic lymph node metastasis, paraaotic lymph node metastasis, parametrial involvements were low. SCC-Ag level was significantly correlated with paraaortic lymph node status (p=0.045) but not with pelvic lymph node status and parametrial involvement. SCC-Ag level was also related to the tumor diameter (p<0.05). Conclusions: SCC-Ag level is not a good predictor for pelvic and paraaortic lymph node metastasis. However, it is still beneficial to assess the tumor burden of squamous cell carcinoma of the cervix.

• Asian Pacific Journal of Cancer Prevention
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• v.17 no.6
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• pp.2853-2856
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• 2016

Background: Many studies have pointed to strategies to cope with patient anxiety in colposcopy. Evidence shows that patients experienced considerable distress with the large loop excision of transformation zone (LLETZ) procedure and suitable interventions should be introduced to reduce anxiety. This study aimed to investigate the effects of music therapy in patients undergoing LLETZ. Materials and Methods: A randomized controlled trial was conducted with patients undergoing LLETZ performed under local anesthesia in an out patient setting at Ramathibodi Hospital, Bangkok, Thailand, from February 2015 to January 2016. After informed consent and demographic data were obtained, we assessed the anxiety level using State Anxiety Inventory pre and post procedures. Music group patients listened to classical songs through headphones, while the control group received the standard care. Pain score was evaluated with a visual analog scale (VAS). Statistical analysis was conducted using Pearson Chi-square, Fisher's Exact test and T-Test and p-values less than 0.05 were considered statistically significant. Results: A total of 73 patients were enrolled and randomized, resulting in 36 women in the music group and 37 women in the non-music control group. The preoperative mean anxiety score was higher in the music group (46.8 VS 45.8 points). The postoperative mean anxiety scores in the music and the non-music groups were 38.7 and 41.3 points, respectively. VAS was lower in music group (2.55 VS 3.33). The percent change of anxiety was greater in the music group, although there was no significant difference between two groups. Conclusions: Music therapy did not significantly reduce anxiety in patients undergoing the LLETZ procedure. However, different interventions should be developed to ease the patients' apprehension during this procedure.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.64
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• pp.65-97
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• 2014

Arbitration is the dispute methods for speedy and economic resolutions in international commercial areas. In maritime disputes cases in East Asia, Korea and Japan are the regional benefits to cover and deal with the maritime cases on arbitration. And Korea and Japan are the competitive maritime industry for heavy shipbuilding industry, cargo carrier, processing and transhipment service on ports, and ship financial services in national competitive areas. Japan is the Tokyo maritime arbitration commission(TOMAC) as an uniquely capable of dealing with arbitrations involving problems arising in the sea field. TOMAC provides amended its arbitration rules 2014 aiming at matching with the maritime disputes circumstances with three maritime arbitration rules as ordinary rules, simplified rules and the rules of small claims arbitration procedure. KCAB however, as the unique commercial arbitration board in Korea is dealing on all of the commercial disputes on only the international commercial arbitration rules in 2011. Though KCAB is dealt with maritime dispute cases on international arbitration rules in Korea, it is small and simple compared with TOMAC in Japan. Maritime disputes are highly complicated and embroiled with multi-parties contract and subcontracts arising under contracts relating to bills of lading, charter parties, sale and purchase of ships, shipbuilding, ship financing and so forth. This paper is to provides a discussion and comparison on recently arbitration rules focus on the maritime aspects on Korea and Japan. We need to consider to make an independent and special institute and maritime arbitration rules including the multiparty consolidation and med-arb provisions for handling the disputes and resolution of maritime conflict cases in Korea.