• Journal of Korean Society of Water and Wastewater
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• v.32 no.6
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• pp.517-526
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• 2018

Climate adaptation strategies for water utilities including 16 water treatment plants(WTPs) in Jeju were investigated. Drought, heat wave, and heavy rain were among the most significant climate factors affecting water utilities in Jeju. Heat wave increases water temperature, which in turn increases the concentration of algae, color, and odor materials. Some adaption strategies for the heat wave can be strengthening water monitoring and introducing advanced water treatments. Heavy rain increases raw water turbidity in surface water. The 7 WTPs that take raw water from streams or springs had a maximum turbidity of less than 50 NTU under heavy rain. However, due to concerns of turbidity spike in treated water, some WTPs discontinued intaking raw water when raw water turbidity increased more than 2 NTU. They instead received treated water from other WTPs which took groundwater for water supply. This happens because of the low skills of employees. Thus, there needs to be an increase in operator competency and upgrade of water facilities for the adaption of heavy rain. To improve adaption for the drought, there should be an increase in the capacity of intake facilities of surface water as well as a decrease in water loss. In addition, water consumption per person should be decreased.

• Korean Journal of Metals and Materials
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• v.47 no.4
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• pp.217-222
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• 2009

Cu as a tramp element has been reported to encourage transverse cracking upon straightening operation during continuous casting or mini-mill processing. Therefore, the hot workability of steels containing Cu should be investigated. The purpose of the present study was to examine the effect of Cu contents on the hot ductility of low carbon steels by using hot compression test. Hot compression test was carried out using a Gleeble. The specimens were heated to $1300^{\circ}C$ for solution treatment and then held for 300s before cooling at a rate of $1^{\circ}C/s$ to test temperatures in the range of $650{\sim}1150^{\circ}C$ ($50^{\circ}C$ intervals) with strain rate of $5{\times}10^{-3}/s$. In Cu containing steels, the hot ductility was decreased with increasing Cu content at high temperature region which is to be attributed to copper enriched phase formed at scale/steel interface, and low hot ductility with increasing Cu content at low temperature region is attributable to the strengthening of matrix by the formation of ${\varepsilon}-Cu$. The width of ductility trough region was decreased with increasing Cu content.

• International Journal of Advanced Culture Technology
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• v.9 no.1
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• pp.93-98
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• 2021

To develop policies regarding fertility and pregnancy that will be effective in preventing further declines in fertility rates in the context present-day Korea, current policies in Japan were analyzed and compared with those now being implemented in Korea. This study was structured to involve (a) comparison of maternal health projects in Korea and Japan, and (b) comparison of infertility support policies based in regional cities in Korea and Japan. Korea's Health Plan 2030 emphasizes strengthening healthcare for high-risk pregnant women, expanding investments to benefit vulnerable groups, and establishing a support system for infertile couples. In Japan, government programs involving treatment targeting infertility specifically were implemented nationwide in 2006. Wide dissemination of accurate knowledge related to pregnancy is emphasized. Also, counseling centers specializing in infertility were established by 67 local governments. We have confirmed that Korean policies include decentralization, while Japan is implementing the central government's infertility policy uniformly in all regions. Japan also adjusted its policy out of concern that problems related to infertility and childbirth will worsen due to the social disaster of COVID-19. The results indicate that providing additional support for psychological counseling may be preferable to increasing the number of in-vitro fertilization procedures. The physical burden on women may be minimized by benchmarking policies in Japan. Step-by-step application of these procedures should be systematically supported to achieve the best results.

• BMB Reports
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• v.55 no.1
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• pp.39-47
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• 2022

Adoptive cell transfer (ACT), a form of cell-based immunotherapy that eliminates cancer by restoring and strengthening the body's immune system, has revolutionized cancer treatment. ACT entails intravenous transfer of either tumor-resident or peripheral blood-modified immune cells into cancer patients to mediate anti-tumor response. Although these immune cells control and eradicate cancer via enhanced cytotoxicity against specific tumor antigens, several side effects have been frequently reported in clinical trials. Recently, exosomes, potential cell-free therapeutics, have emerged as an alternative to cell-based immunotherapies, due to their higher stability under same storage condition, lower risk of GvHD and CRS, and higher resistance to immunosuppressive tumor microenvironment. Exosomes, which are nano-sized lipid vesicles, are secreted by living cells, including immune cells. Exosomes contain proteins, lipids, and nucleic acids, and the functional role of each exosome is determined by the specific cargo derived from parental cells. Exosomes derived from cytotoxic effectors including T cells and NK cells exert anti-tumor effects via proteins such as granzyme B and FasL. In this mini-review, we describe the current understanding of the ACT and immune cell-derived exosomes and discuss the limitations of ACT and the opportunities for immune cell-derived exosomes as immune therapies.

• Physical Therapy Rehabilitation Science
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• v.11 no.3
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• pp.279-284
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• 2022

Objective: This study was conducted to confirm the effect of physiotherapy on the balance and walking in dog with sciatic nerve injury and degenerative arthritis of stifle joints. Design: Single case study Methods: The dog walked abnormally for six months and was administrated in S animal hospital. The dog's right hindlimb was operated for cranial cruciate ligament repair and the dog had been taking a nonsteroidal anti-inflammatory analgesic before being refered. There was severe degenerated osteoarthritis in the right hindlimb. During stance and walking, the right hindlimb was often shown partial weight bearing. The dog's left hindlimb was shown plantigrade stance and walking. The radiograph was shown an intact calcaneal tendon in the left hindlimb. In the neurologic examination, sciatic nerve injury in the left hindlimb was confirmed. The dog was treated using muscle strengthening, proprioceptive exercise, underwater treadmill and Laser therapy two, or three times a week for 3 months. At the 10th and 17th treatment, it was evaluated through stance and gait analyzer system to measure dog's balance and walking. Results: 3 months following physiotherapy, the dog's balance was improved in center of pressure(COP). And peak vertical force(PVF), vertical impulse(VI) was increased in right hindlimb and double stance was decreased. Conclusions: Physiotherapy may have improved the prognosis in this dog with severe osteoarthritis and sciatic nerve injury. This study suggested that animal physiotherapy is a valuable way to improve balance and walking.

• PNF and Movement
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• v.21 no.3
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• pp.367-376
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• 2023

Purpose: The purpose of this study was to compare changes in pediatric Cobb's angle resulting from using the modified scoliosis exercise method to promote proprioception. Methods: There were 32 participants in this study. Cobb's angle was measured automatically using a ZeTTA PACS Viewer through a digital computer program with whole-body x-ray anterior to posterior. Scoliosis was diagnosed by a Cobb's angle of 10° or higher. Modified scoliosis exercises were used as the program for the three-stage method used in the study: the preparation phase (warm-up), actual exercise phase (main exercise), and final clean-up phase (cool-down). In this study, exercises that can promote proprioception, including muscle strengthening, stretching, equilibrium, myofascial release, balance taping, and traction, were applied, and their effects before and after treatment were compared. After implementing the exercise methods once a week-15 times total for about 4 months-the changes in Cobb's angle were measured. Results: After having the pediatric scoliosis patients practice the modified scoliosis exercises for four months, it was found that the Cobb's angle of the spine significantly decreased. Conclusion: The results of this study show that the modified pediatric scoliosis exercise, which is capable of promoting proprioception, is also effective in improving Cobb's angle.

• Composites Research
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• v.37 no.2
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• pp.94-100
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• 2024

In order to evade the premature failure of super duplex stainless steels (SDSSs) in some harsh environments, the increase of their mechanical properties is a promising approach. In this study, based on the laser powder bed fusion (LPBF) technique, SDSS matrix composites without post heat treatment were fabricated by using the powder mixture of SDSSs, super austenitic stainless steels (SASSs) and micron-sized TiC particles. Many in-situ TiC_xN_y nanoparticles were found to be formed by using micron-sized TiC particles in as-built composites, and both fine ferrite and austenite grains were generated. The as-built composites exhibited an excellent combination of high ultimate tensile strength (UTS) (~1066 MPa) and good uniform elongation (UE) (~15.6%), showing a better mechanical property compared with other reported LPBF-fabricated SDSSs, which was mainly attributed to the fine grain, Orowan and dislocation strengthening mechanisms. In particular, the successful fabrication of SDSS matrix composites can set the stage for producing high-performance metallic parts via LPBF technique.

• Journal of Environmental Health Sciences
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• v.41 no.6
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• pp.449-457
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• 2015

Objectives: In Korea, the system of management of medical waste largely relies on the incineration method. Our study aimed to identify any regional imbalances between the generation and treatment of medical waste, and provide reference data for future policy in Korea. Methods: We analyzed data on the amount of medical waste from 2,000 hospitals in 2012, 2013, and 2014 obtained from the Korea Environment Corporation. In the Arc GIS program (version 10.2.3), the addresses of hospitals and incinerators were transformed into map coordinates. The amount of waste generated by each hospital and the amount incinerated were represented by density and size of a triangle symbol, respectively. Results: As of 2014, the total amount of medical waste from the top 2,000 hospitals was 136,073 tons, out of which about half (49%) was generated in the capital area. Eleven incineration companies (three in the capital area, two in the Chungcheong Provinces area, one in the Jeolla Provinces area, and five in the Gyeongsang Provinces area) treated this waste. For the years 2012, 2013, and 2014, about 60% of the medical waste generated from the hospitals in the capital area was treated within the capital area and about 40% was transported to other areas, especially the Gyeongsang Provinces area, for treatment. On the other hand, about 90% of the medical waste incinerated in the capital area originated from the capital area. Conclusion: Our results suggest a spatial imbalance between the generation and treatment of medical waste in Korea and warrants multilateral policies, including the expansion of on-site treatment, strengthening regulation of the containment of medical wastes, promoting reductions in medical waste and more.

• Journal of Physiology & Pathology in Korean Medicine
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• v.32 no.1
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• pp.88-97
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• 2018

This study was designed to prove the effect of the Daoyin exercise therapy combined with complex korean medicine treatment on pain and function improvement of low back pain patients. A retrospective observational study. 30 low back pain patients, checked numeric rating scale(NRS) over 5, were treated with the Daoyin exercise therapy combined with complex korean medicine treatment. NRS, roland & morris disability questionnaire(RMDQ), range of motion(ROM), isokinetic muscle strength, and euroqol five demension questionnaire(EQ-5D) were checked to evaluate patients. The Daoyin exercise therapy combined with complex korean medicine treatment reduced NRS $5.67{\pm}1.40$ to $3.73{\pm}1.72$, improved RMDQ $10.33{\pm}4.91$ to $8.17{\pm}5.40$, strengthened lumbar muscle's peak torque and improved EQ-5D $0.56{\pm}0.20$ to $0.63{\pm}0.15$ and euroqol visual analogue scale(EQVAS) $46.80{\pm}19.95$ to $57.50{\pm}19.93$ but had no effect on ROM. NRS decreased significantly as the number of trials increased. No one had serious adverse reactions. As described above, the Daoyin exercise therapy combined with complex korean medicine treatment can help reducing low back pain, improving lumbar function, strengthening lumbar muscle power and stamina and improving quality of life of low back pain patients.

• Journal of Acupuncture Research
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• v.18 no.6
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• pp.114-124
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• 2001

Objective : To evaluate the effect of treatment for cervical headache by using Cathami Flos herbal acupuncture that are known for anti-inflammatory and function of relieving the pain. Methods : Evaluated the result of Cathami Flos herbal acupuncture treatment twice in a week for patients who have cervical headache with cervical MRI abnormality at Gun-Po Oriental medical hospital in affiliation with wonkwang university. Results : 1. In the distribution of sex; Female rate was 45.9% and male rate was 54.1%., In the distribution of age, Thirties and forties group was the largest group by each 32.8%. 2. In the distribution of Cervical MRI abnormality; Abnormality of C2/3, C3/4, C4/5 was 94.6%, disk bulging and disk protrusion was 94.5%. 3. The effect of treatment by age was as follows; Thirties and forties group were each 31.1%, total 62.2%. 4. In the distribution of treatment period and curative value; 'Two weeks to four week' was 63.9%. Conclusion : These results shows that it is possible for headache to be occurred by cervical abnormality and that the effect of treatment by Cathami Flos herbal acupuncture is exellent by relaxing contracted muscles, strengthening weakened' ligaments and improving inflammatory parts.