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Three-dimensional Capsular Volume Measurements in Multidirectional Shoulder Instability

  • Jun, Yong Cheol;Moon, Young Lae;Elsayed, Moustafa I.;Lim, Jae Hwan;Cha, Dong Hyuk
    • Clinics in Shoulder and Elbow
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    • v.21 no.3
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    • pp.134-137
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    • 2018
  • Background: In a previous study undertaken to quantify capsular volume in rotator cuff interval or axillary pouch, significant differences were found between controls and patients with instability. However, the results obtained were derived from two-dimensional cross sectional areas. In our study, we sought correlation between three-dimensional (3D) capsular volumes, as measured by magnetic resonance arthrography (MRA), and multidirectional instability (MDI) of the shoulder. Methods: The MRAs of 21 patients with MDI of the shoulder and 16 control cases with no instability were retrospectively reviewed. Capsular areas determined by MRA were translated into 3D volumes using 3D software Mimics ver. 16 (Materilise, Leuven, Belgium), and glenoid surface area was measured in axial and coronal MRA views. Then, the ratio between capsular volume and glenoid surface area was calculated, and evaluated with control group. Results: The ratio between 3D capsular volume and glenoid surface area was significantly increased in the MDI group ($3.59{\pm}0.83cm^3/cm^2$) compared to the control group ($2.53{\pm}0.62cm^3/cm^2$) (p<0.01). Conclusions: From these results, we could support that capsular volume enlargement play an important role in MDI of the shoulder using volume measurement.

Precision in situ Measurement using Non-Contacting Capacitive Sensor with 4-Electrodes (비접촉식 4-전극형 전기용량 센서를 이용한 in situ 정밀측정)

  • Kim, Jae-Yeol;Lee, Lae-Duck;Park, Ki-Hyung;Ma, Sang-Dong;Yang, Dong-Jo
    • Journal of the Korean Society for Precision Engineering
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    • v.19 no.3
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    • pp.33-38
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    • 2002
  • To establish the national standard of capacitance, four main electrodes of the cross capacitor which were evaluated to linearity and roundness less the $\pm 1 \mu m$ respectively have to be adjusted symmetrically in an inner cylinder. Four LM shafts with diameter of 5 mm were installed between main electrodes of the cross capacitor, and the electrodes were adjusted, as the first step, by means of the measured capacitance. In the second step, the symmetrical adjustment up to $\pm 1.2\mu m$ was performed by using a ball sensor, ball-type movable sensor, non-contacting capacitive sensor and upper guard sensor which were developed in this project.

Residual Stress and Fracture Analysis of Thick Plate for Partial Penetration Multi-pass Weldment (후판 부분용입 다층용접의 잔류음력 및 파괴 해석)

  • Kim, Seok;Shim, Yong-Lae;Bae, Sung-In;Song, Jung-Il
    • Journal of Welding and Joining
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    • v.19 no.6
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    • pp.636-642
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    • 2001
  • Partial penetration welding joint defines the groove welds that applies the one side welding which does not use steel backing and both side welding without back gouging, that is, the partial penetration welding joint leaves an unwelded portion at the root of the welding area. In this study, we analyzed the residual stress and fracture on the thick metal plates that introduced the partial penetration welding method. As results of using above mentioned welding method, we could draw a conclusion that longitudinal stress and traverse stress occurred around the welding area was so minimal and did not affect any influence. We also performed the fracture behavior evaluation on the partial penetration multi-pass welding with 25.4mm thick plate by using theJ-integral, which finally led us the conclusion that the partial penetration multi -pass welding method is more applicable and effective in handling the root face with less than 6.35mm.

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Analysis of the Surface Characterisitics of Microstickies by Contact Angle Measurement (접촉각 측정을 통한 스틱키의 표면화학적 특성 분석)

  • Park, Il;Lee. Hak-Lae
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.37 no.2 s.110
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    • pp.21-29
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    • 2005
  • Increase in the utilization rate of recycled paper has significantly increased the problem associated with stickies. Despite the effort to eliminate contaminants from recycled furnishes, stickies are still the most serious obstacle in using recycled paper. The amount of micro stickies that are too small to be eliminated by screening, tends to increase significantly as the closure level of white water system is increased and the quality of raw material deteriorates. To establish a process efficient in removing micro stickies is strongly required. In this study, the surface characteristic of micro stickies was investigated with contact angle measurement. Surface energies of MCC, PSA film and model micro stickies were 53.37 mN/m, 29.75mN/m, and 29.63mN/m, respectively. This indicates that the surface characteristic of MMS is very similar to PSA. Thus, solvent coating of PSA and evaporation of the solvent provided excellent model micro stickies for flotation experiment.

The Effects of Blending Starches on the Development of Plybond Strength of Two-ply Linerboard (삼성분 전분혼합에 의한 이겹지의 층간결합강도 개선)

  • Lee, Hak-Lae;Ryu, Jeong-Yong
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.39 no.4
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    • pp.14-20
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    • 2007
  • The effects of blending starches with different gelatinization temperatures on the development of ply-bond strength were systematically investigated using a three component mixture design technique. Oxidized corn starches with different gelatinization temperatures were blended with natural corn starch and sprayed for plybonding. Optimum blend ratio for maximizing plybond strength improvement for the starch blends was 40% of natural starch, 27% of oxidized starch with low gelatinization temperature and 33% of oxidized starch with high gelatinization temperature. Starch granules with the lowest gelatinization temperature gelatinizes at the lowest temperature, while the natural corn starch gelatinizes at later stage of drying. The improvement of plybond strength with starch blends were verified on machine trial as well. Plybond strength improvement obtained from the machine trial was lower than that achievable with handsheets, which was attributed to the lower internal bond strength of the linerboards made from recycled fibers.

The Level of Physical Function and Psychological Well-Being of Postmenopausal Middle-aged Korean Women according to Bone Health Status (폐경 후 중년여성의 골 건강상태에 따른 신체적 기능수준 및 심리적 안녕상태)

  • Cha, Kyong-Sook;Kim, Soon-Lae
    • Research in Community and Public Health Nursing
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    • v.17 no.1
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    • pp.46-55
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    • 2006
  • Objective: This study is to examine the physical function, psychological well-being, and subjective symptom of postmenopausal osteoporotic women. Methods: Data used for this study was collected from 397 women who had experienced one years or longer menopause and visited a hospital in Seoul, Korea during the period from May to December 2005. Results: The level of physical function of the fracture osteoporosis group was significantly lower than the other three groups. The psychological well-being of the fracture osteoporosis group was significantly lower than the other three groups. Subjective symptom of the fracture osteoporosis group was significantly higher than the other three groups. The level of physical function was positively correlated with psychological well-being and negatively with subjective symptom. Psychological well-being was also negatively correlated with the level of subjective symptom. Based on the results, it is recommended that the prevention of vertebral fracture in osteoporotic woman is important, and nursing intervention is necessary for the physical function, psychological well-being, and subjective symptom care.

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The Effects of Tailored Life Style Improvement Program for the Hypertensive Workers Provided by Occupational Health Nurse (고혈압 근로자를 대상으로 산업간호사가 제공한 맞춤형 생활습관개선 프로그램의 효과)

  • Kim, Ji-Ae;Kim, Soon-Lae;Jung, Hye-Sun
    • Korean Journal of Occupational Health Nursing
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    • v.18 no.2
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    • pp.242-251
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    • 2009
  • Purpose: To confirm the effect of tailored life style improvement program, provided by occupational health nurse for hypertensive workers on their blood pressure, self-efficacy, and life style changes in workplace. Method: The experimental and control group of thirty subjects each were randomly assigned for those who agreed to participate in the study among the pre-hypertensive workers. The tailored life style improvement program was provided to the experimental group and conducted once a week for 8 weeks. This program was composed of exercise and low salt diet to control high blood pressure and weight, and the measurement of carbon monoxide for non-smoking inducement. Result: In the experimental group, the systolic and diastolic blood pressure significantly decreased while self-efficacy increased after the program compared to the control group. Smoking and drinking habits of the experimental group were significantly decreased whereas exercise and nutritional habits were significantly improved compared to the control group. Conclusion: The tailored life style improvement program provided by occupational health nurses for the hypertensive workers was positively affected on their blood pressure, self-efficacy and life style changes in workplace.

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Factors Affecting Malnutrition in Hemodialysis Patients (혈액투석 환자의 영양장애 영향요인)

  • Park, Ok Lae;Jang, Young Jun;Jung, Jong Hwan;Kim, Sung Reul
    • Korean Journal of Adult Nursing
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    • v.28 no.2
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    • pp.226-236
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    • 2016
  • Purpose: The aim of this study was to evaluate the nutritional status and to identify factors affecting malnutrition in hemodialysis patients. Methods: Data were collected from a convenience sample of 125 hemodialysis patients who agreed to participate in the study, between August 1 and October 4, 2014. Five structured questionnaires were used: Patient-generated Subjective Global Assessment, Simplified Nutritional Appetite Questionnaire, Self-rating Depression Scale, Fatigue Scale, and Family Support Scale. Data were analyzed by descriptive statistics, t-test, Mann-Whitney U test, ${\chi}^2$-test, and stepwise multiple regression analysis by using SPSS/WIN 22.0 program. Results: Of 125 patients, 30.4% were found to be malnourished. Malnutrition was related to age, family household income, depression, fatigue, social support, appetite, and levels of C-reactive protein and serum albumin. Stepwise multiple regression analysis showed that appetite, C-reactive protein level, fatigue, and albumin level were significant factors affecting malnutrition in hemodialysis patients. Conclusion: Regular and consistent nutritional assessment is essential in hemodialysis patients. Nurses who care for hemodialysis patients need to consider the factors identified from these findings when assessing their patients' nutritional status and needs.

A Study on the Awareness of the Pet Funeral in Korea (한국 반려동물 장례 인식에 관한 연구)

  • Hwang, Kyu-Sung;Lee, Choong-Goo;Kim, Doo-Sung;Kim, Sung-Min;Kim, Jeong-Lae
    • The Journal of the Convergence on Culture Technology
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    • v.1 no.4
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    • pp.13-17
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    • 2015
  • Even though the number of pet animal and breeder are increasing, there is little study related to the funeral of pet animal in Korea. In this paper, the factors affecting pet animal's funeral is conducted based on the survey. The study proves that the awareness of the pet animal funeral is positive but underprepared for pet animal's funeral. Therefore, pet animal funeral businesses operated on the permit system and the current law should be legalized while clarifying the difference between wild animal and pet animal. Also the professionals related to animal funeral should be trained.

Prevention Guidelines for Infection-associated funeral directors in Korea (안치실 및 염습실 종사자의 감염예방 가이드라인 연구)

  • Hwang, Kyu-Sung;Jin, Jung-Yu;Kim, Jeong-Lae
    • The Journal of the Convergence on Culture Technology
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    • v.1 no.4
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    • pp.103-106
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    • 2015
  • The importance of disease prevention and risks of infection for funeral workers is present but it has not been studied about disease prevention of funeral workers in Korea. Health cares of funeral workers in Korea live in poor surroundings, because it depends on only effort of Funeral home or workers. And nationwide survey and guideline made for the infection of funeral workers almost do not exist. We propose the guideline about high infectious disease, personal hygiene, physical and spatial management in Korea. We aim to exploit the guidelines in the control, or ideally the eradication, of the disease or infection conditions we are considering. This guidelines contain a guide to funeral director's control procedures and equipment for infectious disease.