• 한국진공학회:학술대회논문집
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• 한국진공학회 2012년도 제43회 하계 정기 학술대회 초록집
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• pp.224-224
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• 2012

For decades, carbon fiber has expanded their application fields from reinforced composites to energy storage and transfer technologies such as electrodes for super-capacitors and lithium ion batteries and gas diffusion layers for proton exchange membrane fuel cell. Especially in fuel cell, water repellency of gas diffusion layer has become very important property for preventing flooding which is induced by condensed water could damage the fuel cell performance. In this work, we fabricated superhydrophobic network of carbon fiber with high aspect ratio hair-like nanostructure by preferential oxygen plasma etching. Superhydrophobic carbon fiber surfaces were achieved by hydrophobic material coating with a siloxane-based hydrocarbon film, which increased the water contact angle from $147^{\circ}$ to $163^{\circ}$ and decreased the contact angle hysteresis from $71^{\circ}$ to below $5^{\circ}$, sufficient to cause droplet roll-off from the surface in millimeter scale water droplet deposition test. Also, we have explored that the condensation behavior (nucleation and growth) of water droplet on the superhydrophobic carbon fiber were significantly retarded due to the high-aspect-ratio nanostructures under super-saturated vapor conditions. It is implied that superhydrophobic carbon fiber can provide a passage for vapor or gas flow in wet environments such as a gas diffusion layer requiring the effective water removal in the operation of proton exchange membrane fuel cell. Moreover, such nanostructuring of carbon-based materials can be extended to carbon fiber, carbon black or carbon films for applications as a cathode in lithium batteries or carbon fiber composites.

• Journal of Trauma and Injury
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• 제31권3호
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• pp.143-150
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• 2018

Purpose: We have implemented a multi-disciplinary Screening, Brief Intervention and Referral to Treatment (SBIRT) protocol to prevent individuals who sustained alcohol-related traumatic injuries. We therefore conducted this single-center, prospective, randomized, controlled trial (RCT) to assess its efficacy. Methods: All the enrolled patients (n=30) were randomized to either the SBIRT group or the control group. In the current RCT, the proportion of the patients who reduced the amount of alcohol consumption and those who received a specialized treatment served as primary outcome measures. Moreover, changes in a 3-item version of the Alcohol Use Disorders Identification Test Consumption (AUDIT-C), Severity of Dependence Scale (SDS) and Kessler Psychological Distress Scale (K-6) scores at 3 months from baseline served as secondary outcome measures. Results: At 3 months, the proportion of the patients who reduced the amount of alcohol consumption was significantly higher in the SBIRT group as compared with the control group (86.7% vs. 57.1%, p=0.02). Moreover, the proportion of the patients who received a specialized treatment was also significantly higher as compared with the control group (26.7% vs. 1.4%, p=0.01). Furthermore, there were significant differences in changes in the AUDIT, SDS and K-6 scores at 3 months from baseline between the two groups (p<0.05). Conclusions: In conclusion, our results indicate that the SBIRT is effective in reducing hazardous and harmful levels of drinking, the degree of alcohol dependence and that of psychological distress in at-risk drinkers.

• The Korean journal of internal medicine
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• 제33권6호
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• pp.1039-1049
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• 2018

The populations of Asian countries are expected to age rapidly in the near future, with a dramatic increase in the number of heart failure (HF) patients also anticipated. The need for palliative and end-of-life care for elderly patients with advanced HF is currently recognized in aging societies. However, palliative care and active treatment for HF are not mutually exclusive, and palliative care should be provided to reduce suffering occurring at any stage of symptomatic HF after the point of diagnosis. HF patients are at high risk of sudden cardiac death from the early stages of the disease onwards. The decision of whether to perform cardiopulmonary resuscitation in the event of an emergency is challenging, especially in elderly HF patients, because of the difficulty in accurately predicting the prognosis of the condition. Furthermore, advanced HF patients are often fitted with a device, and device deactivation at the end of life is a complicated process. Treatment strategies should thus be discussed by multi-disciplinary teams, including palliative experts, and should consider patient directives to address the problems discussed above. Open communication with the HF patient regarding the expected prognosis, course, and treatment options will serve to support the patient and aid in future planning.

• The Journal of Advanced Prosthodontics
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• 제8권3호
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• pp.241-250
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• 2016

Oligodontia is defined as a congenital tooth agenesis with the absence of six or more permanent teeth. This clinical report describes a patient with non-syndromic partial oligodontia, with retained deciduous teeth and the absence of 16 permanent teeth. Anterior esthetic problems were caused by interarch tooth size discrepancy, interdental space, aberrant tooth dimensions, and the absence of centric contacts of the anterior teeth. Prosthetic restoration after orthodontic and implant treatment was performed with a multi-disciplinary team approach. Favorable functional and esthetic results were obtained using a definitive prosthesis.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제48권3호
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• pp.174-177
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• 2022

Facial degloving injuries are due to separation between the skin and subcutaneous tissues from the underlying muscles, bones, and fascia. These injuries often create a reconstructive challenge for surgeons especially when there are associated complications like wound infection or necrosis of the avulsed flap. This case report presents management of a case of facial degloving injury with full thickness necrosis of the avulsed flap. The authors concluded that treatment of such complex wounds requires a multi-disciplinary approach along with proper planning and staging of the surgical procedures for optimum aesthetic and functional outcomes.

• Journal of Korean Neurosurgical Society
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• 제29권1호
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• pp.44-50
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• 2000

Objective : A few anecdotal cases of mesenchyme-derived tumors which grow into a cranial cavity have been reported that disclosed a dismal prognosis, due to their critical location, aggressive biological behavior, and high rate of surgical morbidity. The aim of this study is to search clinical factors related to these tumors. Methods : Eight patients who underwent surgical removal of intracranial mesenchymal tumors between January 1993 and December 1997 were studied retrospectively. The tumors included are three chordomas, two chondrosarcomas, two rhabdomyosarcomas, and one hemangiopericytoma. Authors compared clinical features, treatment, and results of our cases with reported cases. The mean follow-up period was 20.5 months. Results : All cases showed nonspecific, location-related clinical findings and arose from sphenopetroclival region. Single stage operation was performed in 4 cases, and skull base approaches in 3 cases. Adjuvant therapies were done in 2 cases. Recurrence was seen in 3 cases(37.5%), and 3 patients died. Interdisciplinary approach with otologic surgeon was done in 2 cases. Conclusion : Recent advancement of refined tactics has made these tumors amenable and provides prolongation of progression-free survival. These are modified skull base approaches, multi-modality treatment options, and inter-disciplinary team approaches. Good results may be expected for these mesenchymal tumors by aggressive resection and adjuvant therapies according to their biological nature.

• 한국의학물리학회:학술대회논문집
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• 한국의학물리학회 2002년도 Proceedings
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• pp.19-22
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• 2002

The importance of accurate dose delivery in radiotherapy is well documented. Studies have shown that a mere 5% deviation of the prescribed dose can produce an undesirable treatment outcome. Uncertainties in the dose delivery can arise at different stages of the radiotherapy process. Therefore, a good quality assurance programme will ensure the best possible results and consistency of the radiotherapeutic treatment. Quality assurance in any radiotherapy department involves the responsibility of a multi-disciplinary team of radiation oncologists, medical physicists and radiation technologists. This paper will focus on the physical and technical aspects of QA. The organizational structure and responsibility of the physics QA team is outlined and also included the types and frequencies of QA checks. For a QA program to be effective, action levels should be clearly defined and understood by all staff concerned. Data of the Singapore National Cancer Centre's participation over the last ten years with the IAEA / WHO Postal TLD Dose Inter-comparison programme is presented. The data obtained were within the international criteria. For a QA program to be successfully implemented, there must be a commitment by management to provide adequate staff, test equipment, machine time as well as continual training and education. This is in addition to the positive attitudes of all the staff. A quality audit is also necessary to serve as a check and balance to ensure that the QA is in order.

• 한국직업건강간호학회지
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• 제28권2호
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• pp.83-93
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• 2019

Purpose: Cancer patients are at a higher risk of being unemployed or facing difficulty in returning to work (RTW) than individuals without health concerns. The aim of this study is to identify and describe interventions developed specifically to assist cancer patients to RTW after treatment. Methods: A comprehensive search was conducted from September to October 2018 in different international databases: PubMed, Medline, and Embase. Studies using qualitative, quantitative, or mixed designs were included if they satisfied the following criteria: (a) described an intervention to assist cancer patients to RTW during or after treatment; (b) conducted on patients aged 18 and over and diagnosed with cancer; (c) written in English; (d) published in peer-reviewed journals. Results: Fourteen studies met the inclusion criteria. Counseling with physical activity intervention, behavioral training to reduce fatigue, and multi-disciplinary rehabilitation programs were found to be effective. Conclusion: Interventions adopting a multidisciplinary approach were effective for RTW in cancer patients. This literature review emphasizes the need for more tailored interventions based on survivors' needs and characteristics in the RTW field.

• Radiation Oncology Journal
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• 제37권1호
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• pp.60-65
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• 2019

Purpose: The quality assurance (QA) chart rounds are multidisciplinary meetings to review radiation therapy (RT) treatment plans. This study focus on describing the changes in RT management based on QA round reviews in a single institution. Materials and Methods: After 9 full years of implementation, a retrospective review of all patients whose charts passed through departmental QA chart rounds from 2007 to 2015. The reviewed cases were presented for RT plan review; subcategorized based on decision in QA rounds into: approved, minor modifications or major modifications. Major modification defined as any substantial change which required patient re-simulation or re-planning prior to commencement of RT. Minor modification included treatment plan changes which didn't necessarily require RT re-planning. Results: Overall 7,149 RT treatment plans for different anatomical sites were reviewed at QA rounds. From these treatment plans, 6,654 (93%) were approved, 144 (2%) required minor modifications, while 351 (5%) required major modifications. Major modification included changes in: selected RT dose (96/351, 27%), target volume definition (127/351, 36%), organs-at-risk contouring (10/351, 3%), dose volume objectives/constraints criteria (90/351, 26%), and intent of treatment (28/351, 8%). The RT plans which required major modification according to the tumor subtype were as follows: head and neck (104/904, 12%), thoracic (12/199, 6%), gastrointestinal (33/687,5%), skin (5/106, 5%), genitourinary (16/359, 4%), breast (104/2387, 4%), central nervous system (36/846, 4%), sarcoma (11/277, 4%), pediatric (7/251, 3%), lymphoma (10/423, 2%), gynecological tumors (2/359, 1%), and others (11/351, 3%). Conclusion: Multi-disciplinary standardized QA chart rounds provide a comprehensive and an influential method on RT plans and/or treatment decisions.

• 대한장애인치과학회지
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• 제3권2호
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• pp.80-86
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• 2007

A critical pathway (CP) defines the optimal care process, sequencing and timing of intervention by multi-disciplinary health care teams for a particular diagnosis and procedure. It plays an important role as a cost-effective health care delivery system and a tool for quality control of medical and dental services by means of standardizing medical practices. The aim of this study is to investigate the satisfaction of patients and medical/dental staff after implementation of a critical pathway for dental treatment of disabled children under general anesthesia and its cost effectiveness. Ten patients who underwent dental treatment under general anesthesia were included in the CP group between August and December 2006. The pre-CP group included 20 patients who underwent the same procedure from February 2003. The satisfaction of parent of child patient and medical staff members were compared between two groups. The parents' satisfaction was significantly improved after the implementation of CP and medical/dental staff members were highly satisfied with the usefulness of the critical pathway. In conclusion, the critical pathway for the dental treatment of disabled treatment under general anesthesia can highly improve the satisfaction of parents and medical/ dental staff members.