• Child Health Nursing Research
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• 제23권4호
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• pp.429-439
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• 2017

Purpose: The aim of this study was to identify the status of psychological health among boys in high school and to examine the mediating effects of social support on the relationship between anger and entrapment on psychological health. Methods: The participants in this study were 193 high school boys from Jeju. Measurements included state-trait anger expression inventory, entrapment scale, student social support scale, and questionnaires to assess mental and physical health. Data were analyzed using independent t-test, one-way ANOVA, $Scheff{\acute{e}}$ test, Pearson correlation coefficient, simple and multiple regression techniques with the SPSS 21.0. Mediation analysis was performed with the Baron and Kenny's method, and Sobel test. Results: Mean scores for anger experience, entrapment, social support, and psychological health were $29.81{\pm}7.34$, $34.09{\pm}16.33$, $45.75{\pm}7.02$, $22.51{\pm}9.91$, respectively. There was a significant correlation between anger experience and psychological health. Entrapment was significantly correlated with psychological health. Social support showed partial mediating effects in the relationship between anger experience and psychological health (Sobel test: Z=54.18. p<.001). Social support showed partial mediating effects in the relationship between entrapment and psychological health (Sobel test: Z=2.24. p=.025). Conclusion: The results indicate a need to develop social support programs for boys in high school.

• Clinics in Shoulder and Elbow
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• 제2권2호
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• pp.143-150
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• 1999

Purpose: The purpose of this study is to describe the characteristic clinical findings and treatment of suprascapular nerve entrapment by ganglion and to evaluate its results. Materials and Methods: Seven paitents with suprascapular nerve entrapment were evaluated on an average 13 months(range, six months to three years two months) after surgical excision and decompression. There were six males and one female. The mean age at operation was 31 years(range, 23 to 40 years), Suprascapular nerve entrapment were caused by compression of ganglion cyst in suprascapular notch or spinoglenoid notch in all cases. All patients complained of pain located over posterolateral area of the shoulder. Two patients had atrophy of both the supraspinatus and infraspinatus muscles, In four patients, only the infraspinatus muscle was involved. Muscle strength on both forward flexion and external rotation was decreased in two patients. In four patients, only external rotation was decreased. All patients underwent open excision of ganglion cyst and decompression. Results: The most dramatic effect of operation was prompt disappearance of pain in all patients. The average visual analog scale had improved from 7.2 to 0.6 point at the latest follow-up evaluation. An atrophy of the supraspinatus or infraspinatus muscle partially disappeared in four of six patients and muscle strength of forward flexion or abduction improved in all of six patients. The overall result was excellent for five patients and good for two. Conclusion: Surpascapular nerve entrapment by ganglionic cyst had clinically unique symptoms and signs on physical examination. Surgical excision is effective for symptomatic and functional outcomes. We believe that early intervention can be one of treatment modality before an irreversible damage occurs if the ganglion is large enough to compress suprascapular nerve, and to develop severe pain and muscular atrophy.

• 한국주조공학회지
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• 제42권6호
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• pp.331-336
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• 2022

본 연구에서는 LPG 자동차용 연료탱크 밸브 제조를 위한 주조방안에 대하여 연구하였다. 대상 밸브에는 그 내부에 두 개의 돌기가 존재한다. 돌기 내부에는 기공 결함이 흔히 발생하였다. 이러한 주조 불량을 최소화하기 위하여 대상 제품의 다이캐스팅 과정에서 용탕 흐름에 대한 컴퓨터 시뮬레이션을 수행하였다. 주요 공정 매개변수는 인게이트 위치, 제품 방향 및 주입 속도였다. 또한 진공 다이캐스팅의 사용을 고려하였다. 기공 결함의 위치는 모든 인게이트 위치와 제품 방향에 대해 거의 동일했다. 한편 주입 속도의 변화가 공기 포획의 위치에 영향을 미친다는 것을 알 수 있었다. 진공 다이캐스팅의 경우 기공 결함의 위치는 이전의 경우와 비슷했지만, 실제 상황에서는 진공으로 인해 기포가 많이 줄어들 것으로 예상된다.

• Journal of Pharmaceutical Investigation
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• 제25권3호
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• pp.249-264
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• 1995

Although liposome has many advantages as a pharmaceutical dosage form, its application in the industrial field has been limited because of some problems such as preparation method, reproducibility, scale-up, stability and sterilization etc. Liposomes prepared by microemulsification method had defined size, narrow size distribution, reproducibility and high entrapment efficiency. For enhancing the stability, the dry form of liposome was recommended. These types of liposome are proliposome and freeze-dried liposome. The liposome must have some properties for preparing of freeze-dried liposome; small size $(50{\sim}200\;nm)$, narrow size distribution and cryoprotectant. In this experiment, the liposomes containing 5-Fluorouracil(5-FU) and its prodrug(pentyl-5-FU-1-acetate; PFA, hexyl-5-FU-1-acetate; HFA) were made with soybean phosphatidylcholine, cholesterol, stearylamine(SA) and dicetyl phosphate(DCP) employing hydration method or microemulsification method using $Microfluidizer^{TM}$. Both or liposome types were MLV and MEL. After preparation, freeze drying and rehydration were performed. In the process of freezing, trehalose(Tr) was added as a cryoprotectant. Their evaluation methods were as follows; entrapment efficiency, mean particle size and size distribution, dissolution test, retain of entrapment efficiency and turbidity after freeze-drying. The results are summarized as belows. The entrapment efficiency of 5-FU was dependent on total lipid concentration and cholesterol content but that of PFA and HFA was decreased when cholesterol was added. When DCP and SA were added, entrapment efficiency was decreased. As the partition coefficient of drug was increased, entrapment efficiency was increased. Under the same condition, entrapment efficiency of MEL is similar to that of MLV. The mean particle size and size distribution of MEL were smaller than those of MLV. Dissolution rates of drug from both liposome types were comparatively similar. Dissolution rates of drugs with serum and liver homogenate were faster than without these material. After preparation of liposome, free drug was removed efficiency by Dowex 50W-X4. When liposome was freeze-dried and then rehydrated in the presence of Tr, characteristics of liposome were maintained well in MEL than MLV. Tr Was used successfully as a cryoprotectant in the process of freeze drying and the optimal ratio of Tr:Lipid was 4:1(g/g).

• Journal of Korean Neurosurgical Society
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• 제57권2호
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• pp.123-126
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• 2015

A rare case of chronic pain of entrapment neuropathy of the sciatic nerve successfully relieved by surgical decompression is presented. A 71-year-old male suffered a chronic right buttock pain of duration of 7 years which radiating to the right distal leg and foot. His pain developed gradually over one year after underwenting drainage for the gluteal abscess seven years ago. A cramping buttock and intermittently radiating pain to his right foot on sitting, walking, and voiding did not respond to conventional treatment. An MRI suggested a post-inflammatory adhesion encroaching the proximal course of the sciatic nerve beneath the piriformis as it emerges from the sciatic notch. Upon exploration of the sciatic nerve, a fibrotic tendinous scar beneath the piriformis was found and released proximally to the sciatic notch. His chronic intractable pain was completely relieved within days after the decompression. However, thigh weakness and hypesthesia of the foot did not improve. This case suggest a need for of more prompt investigation and decompression of the chronic sciatic entrapment neuropathy which does not improve clinically or electrically over several months.

• 공업화학
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• 제18권2호
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• pp.130-135
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• 2007

EGCG의 안정성을 향상시키기 위해 ethosome에 포집을 시도하였다. 물에 에탄올을 첨가해서 EGCG의 용해도를 높임으로써 ethosome에 적정량의 EGCG이 포집될 수 있도록 하였다. EGCG 수용액의 농도와 ethosome 막을 구성하는 지질의 조성은 ethosome 입자크기와 포집효율에 상당한 영향을 미치는 것을 확인하고 ethosome의 액정상 형성은 편광 현미경을 사용하여 관측하였다. EGCG가 수용액 상태로 있을 때와 ethosome에 포집되어 있을 때, UV 또는 고온의 상태에서의 안정성을 비교한 결과 ethosome에 포집된 EGCG의 안정화 효과를 확인하였다. Ethosome에 토코페롤의 첨가는 UV에 의한 EGCG의 분해를 지연시켰다.

• 여성건강간호학회지
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• 제15권4호
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• pp.294-302
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• 2009

Purpose: This study was done to compare the level of parenting stress, entrapment, satisfaction of paternal support, and marital satisfaction between employed and non-employed mothers and to identify significant predictors for parenting stress. Methods: With a cross-sectional, correlational study design, a sample of study was consisted of 175 women who were employed or non-employed with preschool children through convenience sampling. Data were collected with a structured self-administered questionnaire and analyzed by $x^2$-test, t-test, Pearson's coefficients, and multiple regression analysis using SPSS program. Results: Results shows that the level of parenting stress of non-employed mothers was significant higher than that of employed mother. The parenting stress was negatively correlated to marital satisfaction and positively correlated to entrapment in both of them. Entrapment was significant predictors explaining parenting stress in both of them and level of maternal education and satisfaction of paternal support and was significant predictors explaining parenting stress of non-employed mothers. Conclusion: Entrapment was very important factors to management parenting stress of both employed and non-employed mothers. Especially, satisfaction of paternal support and marital satisfaction was very important factor to manage parenting stress of mothers.

• Archives of Pharmacal Research
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• 제29권12호
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• pp.1187-1192
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• 2006

The aims of this study were to encapsulate arbutin (AR) in liposome to enhance the skin-whitening activity, and to investigate the effect of liposome formulation on the entrapment efficiency (EE%), skin permeation rate and skin deposition. The liposomes were prepared by a film dispersion method with several different formulations and were separated from the solution by using the gel-filtration method. The physical (size distribution, morphology) and chemical (drug entrapment efficiency, hairless mouse skin permeation and deposition) properties of liposomes were characterized. The entrapment efficiency in all liposome formulations varied between 4.35% and 17.63%, and was dependent on the lipid content. The particle sizes of liposomes were in the range of $179.9{\sim}212.8\;nm$ in all liposome formulations. Although the permeation rate of AR in the liposome formulations decreased compared with AR solution, the deposition amount of AR in the epidermis/dermis layers increased in AR liposomal formulation. These results suggest that liposomal formulation could enhance the skin deposition of hydrophilic skin-whitening agents, thereby enhancing their activities.

• Clinics in Shoulder and Elbow
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• 제3권1호
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• pp.54-60
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• 2000

As a surgical treatment of ulnar nerve entrapment syndrome includes simple decompression, medial epicondylectomy, and anterior transposition of the ulnar nerve into a subcutaneous or submuscular bed have been widely used. Despite many reports of these surgical procedure, there is little to guide the choice of one surgical technique. The purpose of our study is to analyse clinical and electrodiagnostic result after minimal invasive decompression by decompression and medial epicondyloplasty(deepening of ulnar groove). We have experienced 9 cases of ulnar nerve entrapment syndrome who were treated with decompression and medial epicondyloplasty. Male were five and female were four. The mean age at operation was 36 years ranging from 23 to 47 years. Operative procedure was to incise the medial intermuscular septum and aponeurotic arch of flexor carpiulnaris and to deepen the ulnar groove. Patients are allowed to do range of motion(ROM) exercise on the average 5days. All patient were relieved pain and improved motor and sensory function, and this procedure allows early ROM exercise after operation because the muscle have not been detached.

• Journal of Pharmaceutical Investigation
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• 제26권4호
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• pp.291-297
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• 1996

Liposomes of $pSV-{\beta}-Galactosidase$ vector plasmid DNA with various lipid composition were prepared by the thin-film method. Size distribution, shape and the efficiency of plasmid DNA encapsulation were investigated. Effect of sonication time on the plasmid DNA entrapment in liposomes and stability at $4^{\circ}C$ were also examined. Sizes of neutral liposomes were about 100-200 nm and above $1\;{mu}m$, and those of cationic liposomes were about 400-600 nm and above $1\;{mu}m$. Shapes of liposomes entrapped plasmid DNA were spherical. Proper sonication time for better entrapment was below 15 minutes and stability at $4^{\circ}C$ was decreased rapidly after 1 day. Plasmid DNA entrapments of complex liposomes of various lipids were higher than those of liposomes made from one sort of lipid. Plasmid DNA entrapments of cationic liposomes were higher than those of neutral liposomes.