• The Journal of Internal Korean Medicine
• /
• v.22 no.4
• /
• pp.669-674
• /
• 2001

Objectives: The purpose of this study was to examine the efficacy of Hangamdan(Kangaidan) on 60 patients who have suffered from breast cancer. Methods: Hangamdan(Kangaidan) was administered to patients for over 1 months continuously. We checked improvement of clinical symptoms, changes of chemistry hematological test. Results: The results obtained are summarized as follows. Hangamdan(Kangaidan) has significant effect on the improvement of clinical symptoms. The effects of maintenance and improvement in the symptoms with traditional oriental therapy(83.3%) and combined treatment of western and oriental therapy(92.1%) were observed. The effects of the symptoms were diarrhea(37.3%), abdominal pain (25.3%), general body weakness(22.9%), nausea(20.5%) and etc. in orders. And analysis of hematology attached by breast cancer, maintenance and increasing of WBC(89.9%), RBC(74.7%), Hgb(81.1%), Platelet(92.4%) were observed. After taken Hangamdan(Kangaidan), maintenance and decreasing of AST(85.9%), ALT(94.8%), ${\gamma}$-GTP(87.5%), BUN(88.3%), Creatinine(90.9%) were observed. And increasing of IL-12(25%), IFN-${\gamma}$(83%) were observed. Conclusions: From the above results, it is suggested that Hangamdan(Kangaidan) have significant effects on recovery of immune modulation.

• Nuclear Engineering and Technology
• /
• v.23 no.2
• /
• pp.174-182
• /
• 1991

Effects of human error relevant to the periodic test are incorporated in the evaluations of the unavailability and optimal test interval of a safety system. Two types of possible human error with respect to the test and maintenance are considered. One is the possibility that a good safety system is inadvertently left in a bad state after test（Type A human error) and the other is the possibility that a bad safety system is undetected upon the test（Type B human error). An event tree model is developed for the steady-state unavailability of a safety system in order to determine the effects of human errors on the system unavailability and the optimal test interval. A reliability analysis of the Safety Injection System (SIS) was peformed to evaluate the effects of human error on the SIS unavailability. Results of various sensitivity analyses show that ; (1) the steady-state unavailability of the safety system increases as the probabilities of both types of human error increase and it is far more sensitive to Type A human error, (2) the optimal test interval increases slightly as the probability of Type A human error increases but it decreases as the probability of Type B human error increases, and (3) provided that the test interval of the safety injction pump is kept unchanged, the unavailability of SIS increases significantly as the probability of Type A human error increases but slightly as the probability of Type B human error increases. Therefore, to obtain the realistic result of reliability analysis, one should take shorter test interval (not optimal test interval) so that the unavailability of SIS can be maintained at the same level irrespective of human error. Since Type A human error during test & maintenance influeces greatly on the system unavailability, special efforts to reduce the possibility of Type A human error are essential in the course of test & maintenance.

• Journal of Oral Medicine and Pain
• /
• v.25 no.1
• /
• pp.1-7
• /
• 2000

The purpose of this study is to investigate effects of several zinc solutions including Artemisia asiatica-containing zinc solution on concentration of oral volatile sulfur compounds(VSCs). We determined the VSCs concentration of breath of human subjects before and after use of zinc solutions(O.25% $ZnF_2$ Artemisia asiatica-containing 0.25% $ZnCl_2$ and Artemisia asiatica-containing 0.25% $ZnCl_2$ solutions) The results were as follows : 1. 0.25% $ZnCl_2$ solution was more effective than 0.25% $ZnF_2$ solution in reducing the concentration of oral VSCs and the maintenance duration of effectiveness. 2. Artemisia asiatica-containing 0.25% $ZnCl_2$ solution was more effective than Artemisia asiatica-containing 0.25% $ZnF_2$ solution in reducing the concentration of oral VSCs and the maintenance duration of effectiveness. 3. Artemisia asiatica-containing 0.25% $ZnF_2$ solution and 0.25% $ZnF_2$ solution showed no significant difference in reducing the concentration of oral VSCs and the maintenance duration of effectiveness but, Artemisia asiatica-containing 0.25% $ZnF_2$ solution was slightly more effective. 4. Artemisia asiatica-containing 0.25% $ZnCl_2$ solution and 0.25% $ZnCl_2$ solution showed no significant difference in reducing the concentration of oral VSCs and the maintenance duration of effectiveness but, Artemisia asiatica-containing 0.25% $ZnF_2$ solution was slightly more effective.

• Journal of Korean Society of Transportation
• /
• v.30 no.4
• /
• pp.71-81
• /
• 2012

The Korean government has actively accepted private investments in building expressways to improve its financial status. As of 2012, 422km of 9 private expressways are under operation, and until 2016 additional 15 are planned to be built with private investments. However, on average, each private expressway is at most 37km long, which works against economies of scale in maintenance and thus leads to inefficiencies such as traffic jams, driver inconveniences, and the increase in operating costs. To resolve these problems, the present study suggested that the maintenance and tolling system should be unified across each private operator. Unifying the operation of private expressways was expected to reduce user travel times and tolls, and save operator maintenance costs. These economic effects were expected to be tantamount to hundreds of billions of dollars. The shared toll collecting system will also reduce user's delays by removing main line tollgates. This can save another hundreds of billions of dollars by ensuring driver's convenience and safety.

• Journal of Animal Science and Technology
• /
• v.60 no.4
• /
• pp.7.1-7.5
• /
• 2018

Background: Mice are widely accepted research models of great clinical significance. Maintenance of laboratory mice breed is an essential aspect for performing research activities in various fields of science. Infanticide is one of the prominent causes of litter loss during maintenance of laboratory mice stock. The present study is an effort to monitor the effect of change in ambient temperature of female mice below the normal range on cannibalism and infanticide during early postparturition phase. Adult female Swiss albino mice have been divided into two groups of control and treatment. On the day of litter group one was maintained under controlled temperature conditions (minimum $20^{\circ}C$ to maximum $23^{\circ}C$) throughout, while female mice belong to group two have been exposed to variation of room temperature (maximum $15^{\circ}C$ to minimum $10^{\circ}C$ for two nights and one day) until 36 h postparturition. Results: The effects of temperature changes were observed on the infanticide behaviour of dams along with the survival of pups in early postparturition phase till 36 h after delivery. The significant statistical difference (P < 0.05) was reported in infanticide behaviour of dams when control and treatment group was compared. It is observed that decrement in surrounding temperature promotes decrement in the ambient body temperature of dams during early postparturition. It is proposed that alteration of hypothalamic homeostasis due to temperature change induces cannibalism and infanticide behaviour. Lack of thermoregulation during early postparturition creates the sense of insecurity, in-satiety, anxiety and stress. Conclusions: Authors strongly recommend the maintenance of body and surrounding temperature to prevent infanticidal behaviour and cannibalism within Swiss albino mice population. Further investigations are advisable to authenticate the active behavioural and biochemical pathway behind the phenomena.

• Journal of environmental and Sanitary engineering
• /
• v.23 no.3
• /
• pp.59-71
• /
• 2008

In this study, we intend to present the uncontrolled landfill maintenance plans by diversely reviewing the operating conditions of landfill and environmental effects and economical issues resulted from the operation of landfill for the purpose of suggesting the optimal maintenance plans applicable to the uncontrolled landfill and unused landfill located in Korea. We perform the basic and precise surveys against three landfill sites showing the biggest problem out of 8 unsanitary landfills sites located in Y County. We compare and review the treatment plans prepared and operated by the N Landfill. The compared and reviewed results show that the local stabilization plan is more effective than the excavation and transfer treatment plan when considering the economic efficiency only. However, the excavation and transfer treatment plan is valid when considering the diverse elements. The G Landfill is operated with separated into living waste landfill section and construction waste landfill section. However, some landfill gas collection bores or holes are installed in its living waste landfill section, which has not been used for about 20 years, as a part of follow-up control. The element causing the environmental damage is considerably reduced in its living waste landfill section. However, the effort to keep the follow-up control through the local stabilization work is required. The landfill is under processing in the construction waste landfill section. However, most of buried wastes are the inorganic wastes such as waste materials and concrete, so the maintenance plan focused on the use of top land by installing the local stabilization facilities is considered as an effective plan. The landfill is under processing in the K Landfill. It seems to be difficult to maintain this landfill through the local stabilization. The excavation and transfer treatment plan to completely remove the potential environmental pollution source is considered as the valid plan.

• Journal of the Korean Society for Railway
• /
• v.13 no.6
• /
• pp.608-616
• /
• 2010

Seoul Metropolitan Rapid Transit Corporation, managing the line number 5,6,7 and 8 has inspected and maintained for the maintenance of the facilities spread in the extended 152km and 148 stations. Despite the thorough inspection for prevention of the facility failure, the failure has continuously occurred, due to the environmental factors of the underground, mechanical worn-out caused by frequent use, aging facilities, system error, negligence on use, etc. We have achieved a 53.4% reduction in the number of failure by the end of June, 2010 by breaking the conventional way of inspections and maintenance and by adopting quantitative goal management and new way of work. In this paper, we will analyze the problems of inspections and maintenance of the railway facilities, the failure reduction strategy and the performance of each strategy.

• International Journal of Computer Science & Network Security
• /
• v.21 no.3
• /
• pp.198-205
• /
• 2021

For twenty years, in the EU there has been a trend of a lack of maritime infrastructure and a redundance of the road one, which has a negative impact on the economy. The intermodal transport market structure in the EU has not changed over the past ten years. The stability of transport systems due to the lack of changes in the transport market remains under threat, affecting supply chains and networks through the optimization of warehousing and transportation costs. The research methodology is based on a quantitative assessment of cause-and-effect relations between economic growth and transport and logistics in the EU. A statistical analysis of security indicators, intermodal and modal transport, international trade in goods within the EU and in the world trade in goods, the dynamics of GDP of the EU countries, the level of openness of the EU economy, investment and maintenance costs of different modes of transport and infrastructure has been carried out. The results show that in 2000- 2010 there were positive changes in the transport and logistics infrastructure of the EU, which had a positive effect on trade, openness of the economy of the EU, GDP growth. However, at that time, negative effects of environmental impact and the load on road and rail transport were accumulating. Investment in different modes of transport is limited, and technical maintenance and infrastructure maintenance costs form a significant part of GDP of the EU. A slowdown in economic growth leads to budget constraints and infrastructure financing gap. As a result, the freight and passenger intermodal and modal transport market structure remains virtually unchanged. The load on rail and road transport remains stable, despite the reduced level of transport hazards. Transport productivity has declined over the past ten years. Herewith, the intensification of trade and the openness of the EU economies require constant modernization and innovative renewal. The EU policy in this direction remains normative, uncontrolled, which is reflected in investment differences within the EU and maintenance costs.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.47 no.2
• /
• pp.295-310
• /
• 2023

The current virtual fashion influencers are a hyper-real prototype in that it has a higher presence than the virtual humans in the past. Also, they are leading fashion trend with more than tens of thousands of followers on social media. This study investigated the physical and social presence of virtual fashion influencer perceived by consumer and verified effects on evaluation attributes of influencers and the relationship maintenance behavior. A total of 321 Korean women in their 20s and 30s who have Instagram account participated in the online survey. The data was analyzed using AMOS 23.0. The results revealed that the physical presence had a significant impact on attractiveness of virtual fashion influencers. In case of social presence had a positive effect on friendliness and reliability of virtual fashion influencers. In addition, evaluation attributes of virtual fashion influencers' friendliness, attractiveness and reliability in the order of influence on relationship maintenance behavior. This study suggested that the development of social presence of virtual fashion influencers with friendliness and attractiveness is more important than the physical presence that has already reached a high level.

• Journal of the East Asian Society of Dietary Life
• /
• v.14 no.3
• /
• pp.196-206
• /
• 2004

The medicinal effects of 107 grains in $\boxDr$Dongeuebogam$\boxUl$ were studied for the development of healthy Korean traditional meal. Their efficacy, way of use, fact of taboo were mentioned in it. Grains were utilized and processed as tang(soup), jook(porridge), boonmal(powder), kunjo(drying), etc. Most of grains had sweet taste and mild nature(not hot and not cold) based on Eum-Yang-Oh-Haeng theory. The medicinal effects of grains described in $\boxDr$Dongeuebogam$\boxUl$ were the protection of stomach and intestine, enhancement of physical activity, protection of hair and skin, thirst elimination, treatment of several diseases, maintenance of health, etc.