• 대한간호학회지
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• 제28권3호
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• pp.695-704
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• 1998

This study aims for examines the actual physical symptom and stress in caregivers of patients with cerebrovascular disease. The data were collected by a survey conducted from August to September, 1997 which included 65 caregivers of cerebrovascular disease patients in 4 hospitals located in Seoul. The caregiver's stress was measured by Choi (1992)'s instrument and the actual physical symptoms were investigated. The data were analyzed using ANOVA, Scheffe test, Pearson correlation coefficient and stepwise multiple regression. The results were as follows : 1. The mean number of caregiver's physical symptom was 3.5. There were significantly higher number of physical symptom in women, those of who have a religious affiliation, those of who perceive their own health status perceived as bad, and those of who perceived their patients disease condition as serious than in their counterparts. Also, the number of caregiver's physical symptom was significantly higher in caregivers whose patients have a paralysis sypmtom and the disease onset as accident than in caregivers whose patients have no paralysis symptom and the disease onset as spontaneous. 2. The average of caregiver's stress was 57.9. The caregiver's stress was the highest in between the ages of 50 and 59. There were also significantly higher level of stress in women, those of who perceived the disease condition of their patients as serious than in their counterparts. 3. The most common caregiver's physical symptom was fatigue(87.7%). This was followed by insomnia(58.5%) and muscle pain(47.7%). 4. Caregiver's physical sypmtom was positively correlated with caregiver's stress and negatively correlated with patient's activity of daily life. 5. The most important vairable affecting the caregiver's physical symtom was patient's activity of daily life which accounted for 12.7% of the total variance in stepwise multiple regression analysis. The most important vairable affecting the caregiver's stress was the patient disease condition perceived by the caregiver that accounted for 12.1% of the total variance.

• 한국치위생학회지
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• 제19권5호
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• pp.791-802
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• 2019

Objectives: The purpose of this study was to investigate the relevance of stress and stress amounts of physical environment factors and interpersonal factors of clinical practice institution of dental hygiene department students. It is in order to create condition to focus on clinical practice institution. Methods: The participants in this study were 231 dental hygiene department students engaged in clinical practice; the survey was conducted from September 1 to 30, 2018, using a structured questionnaire (1040460-A-2018-036). The questionnaire consisted of items on participants' general characteristics (4 items), characteristics of the clinical practice institution (9 items), stress from environmental factors (8 items), stress from interpersonal factors (7 items), and stress amounts of BEPSI (5 items). The collected data were compared and analyzed using a t-test, ANOVA, and multiple regression. Results: The physical environment and interpersonal factors of stress according in clinical practice institutions were statistically significant. In case of a number of dentists (p<0.05), subjective practice atmosphere (p<0.001), practice satisfaction (p<0.001), and kindly teach (p<0.001). The factors affecting the amount of stress on the characteristics of the clinical practice institution were that the dental clinic, the relationship with the dental hygienist is common, the number of dentists is 4 or more, and there is no resting room. Conclusions: The selected clinical practice institutions should provide dental hygiene department students with places to relax and a systematic hands-on manual.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2021년도 춘계학술대회
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• pp.60-60
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• 2021

Non-alcoholic fatty liver disease (NAFLD), especially including non-alcoholic steatohepatitis (NASH) is one of the common diseases with 25% of prevalence globally, but there is no thera-peutic access available. Amomum villosum var. xanthioides (Wall. ex Baker) T.L.Wu & S.J.Chen (AX), which is a medicinal herb and traditionally used for treating digestive tract disorders in Asia countries. We aimed to examine pharmacological effects of ethyl acetate fraction of AX (AXEF) against ER stress-induced NASH mice model using C57/BL6J male mice by tunicamycin (TM, 2 mg/kg) injection focusing on the oxidative stress. Mice were orally administrated AXEF (12.5, 25, or 50 mg/kg), silymarin (50 mg/kg) or distilled water daily for 5 days, and outcomes for fatty liver, inflammation, and oxidative stress were measured in serum or liver tissue levels. AXEF drastically attenuated hepatic ER stress-induced NASH which were evidenced by decreases of li-pid droplet accumulations, serum liver enzymes, hepatic inflammations, and cell death signals in the hepatic tissue or serum levels. Interestingly, AXEF showed potent antioxidant effects by quenching of reactive oxidative stress and its final product of lipid peroxide in the hepatic tissue, specifically increase of metallothionein (MT). To confirm underlying actions of AXEF, we ob-served that AXEF increase MT1gene promoter activities in the physiological levels. Collectively, AXEF showed antioxidant properties on TM-induced ER stress of NASH by enhancement of MTs.

• 벤처창업연구
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• 제9권1호
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• pp.89-95
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• 2014

본 연구는 경영성과 고양을 위하여 PITR 검사를 통해 산업재해 근로자(환자)의 스트레스 및 심리적 자원, 스트레스 대처능력 그리고 스트레스 대처방법의 특징성 등을 파악하고자 한다. 연구의 대상은 근로복지공단에서 산업재해 근로자(환자)들을 위해 실시하는 심리지원프로그램인 '희망찾기 프로그램'에 참여한 20명이 실험집단이며, 비교집단으로 동일 병원에서 입원하고 있는 일반 재해 환자 20명이다. 본 연구의 가설 검증을 위하여 SPSS 18.0을 이용하여 t-test를 실시하였고, PITR 검사의 특성을 이용하여 질적 분석을 실시하였으며, 본 연구자 2명 이외에 임상심리학박사 1인에게 타당도 검증을 받았다. 본 연구의 대상인 산업재해 근로자(환자)들은 일반 재해 환자들보다 높은 스트레스, 현실 대처능력 저하, 스트레스 대처를 위한 심리적 자원 상실, 자존감 하락, 대인관계 저하, 그리고 불안을 경험하고 있음을 검증하였다. 경영성과 고양을 위해서는 첫째, 산업재해 근로자(환자)들의 심리 및 정신건강에 대한 연구가 이루어져야 할 것이며, 둘째, 경영현장에서 산업재해 근로자(환자)들에 대한 복지가 적절하게 이루어지며 원래의 일터로 복귀될 수 있도록 해야 하고, 셋째, 산업재해 근로자(환자)들의 심리지원 서비스를 확대 지원할 필요가 있으며, 넷째, 국가 차원에서 실시하는 심리지원 서비스에 참여 할 수 있도록 유인책이 필요하고, 다섯째, 사용자, 회사 내 산업재해 담당자 및 산업재해 근로자 가족 등에 대해 산업재해 및 산업재해 근로자 이해 교육을 확대해야 한다.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제28권4호
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• pp.295-309
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• 2006

The present study was aimed to evaluate the incidence, etiological factors, and management of cleft lip and palate. Two hundred and twenty patients with cleft lip and/or cleft palate who were treated at Department of Oral and Maxillofacial Surgery, Chonnam National University Hospital, during the period between January 1994 and December 2003 were reviewed. The ratios of cleft lip : cleft lip with cleft palate : and cleft palate were 0.4:1.1:1. Males were more common than females in cleft lip (1.3:1) and cleft lip and palate (2.5:1), while females were more common than males in cleft palate (1:1.3). In the cleft side, left clefts were more prevalent than right clefts (cleft lip 1.3:1, cleft lip and palate 1.6:1). Unilateral clefts were more common than bilateral clefts in cleft lip (79:21). Cleft lip and cleft palate were more common in those with blood type A (34.5%) than those with other types. There was no significant relationship between birth season and frequency of clefts. The clefts were common in the first-born (48.8%), and in mothers aged between 25 and 29 (51.7%). Medication (24.7%) and stress (16.7%) during the first trimester were noted. Positive familial history was noted in 13 cases (5.9%). Thirty-two cases (15%) were associated with other congenital anomalies, in which tonguetie (40.6%) and congenital heart disease (21.9%) were most common. Among 100 patients with cleft palate, 77 patients had middle ear disease (77%), which occurred predominently in the incomplete cleft palate. Seventy-six among the 77 patients received myringotomy and ventilation tube insertion, and the remaining one received antibiotic medication only. Cleft lips were treated primarily at 3 to 6 months, and cleft palates were at 1 to 2 years. Treatment regimens included modified Millard method mainly in the cleft lip, and Wardill V-Y, Dorrance method, and Furlow method in the cleft palate. The percentage of palatal lengthening as type of cleft palate was greater in the incomplete cleft palate group (11.2%) than in the complete cleft palate group (9.6%). The percentage of palatal lengthening as operating method was no difference between the Furlow method (10.9%) and the push back method (10.7%). As postoperative complications, hypertrophic scar was most frequent in the cleft lip, and oronasal fistula in the cleft palate. In summary, it was shown that medication and stress during the first trimester of pregnancy were frequently associated with cleft lip and cleft palate, adequate timing and selection of method of operation are important factors to obtain morphologically and functionally good results. Furthermore prevention and treatment of middle ear disease are important in cleft palate patients because of its high co-occurrence.

• 한국콘텐츠학회논문지
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• 제21권11호
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• pp.598-608
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• 2021

본 연구는 CRR (Colour Reflection Reading) 분석법을 이용하여 지역사회 치과위생사의 색채 선호를 통해 특정 집단의 성향을 알아보고자 하였다. 광주·전남 지역의 치과 병·의원에 재직 중인 치과위생사 총 238명을 대상으로 자기기입식 설문조사를 시행하였다. 8가지 색상 중 선택하는 순서에 따라 유형을 구별하였으며, SPSS 22.0 통계프로그램을 통해 분석하였다. 분석 결과, 첫 번째 색으로는 마젠타, 두 번째는 노랑, 세 번째로 마젠타 색상을 선호하는 것으로 나타났다. 연령별 선호 색채는 모든 연령에서 첫 번째 색으로 마젠타를 선호하였고, 결혼과 자녀 유무에 따른 결과는 두 번째 색에서 기혼은 노랑, 미혼은 파랑을 선호하는 것으로 동일하게 나타났다. 이 연구결과는 선호 색채 및 보색을 활용하여 스트레스 완화나 심리적 안정을 고려한 근무 환경 조성 등 인적자원 관리를 위한 자료로 활용하고자 한다.

• 대한본초학회지
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• 제35권1호
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• pp.1-8
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• 2020

Objectives : This study was conducted to evaluate the effects of Corni Fructus, the dried fruits of Cornus officinalis Sieb., on unilateral common carotid artery occlusion (UCCAO) in mouse model. Methods : The Corni Fructus used in the experiment was extracted with anhydrous methanol, then filtered and freeze-dried. C57BL/6 mice used in the experiments were conducted left UCCAO surgery to set up UCCAO rodent model for mice. The mice were divided into five groups for evaluate the effect of methanol extract of Corni Fructus (COM) on UCCAO induced ischemic brain injury. The expression levels of nitric oxide in cerebrum and serum, body weight change were measured. To determine the effect of UCCAO and COM administration on brain neurons, morphological changes of the cerebrum through a microscope was conducted. And western blot was performed to confirm the underlying mechanism of neuroprotective effect of COM administration. Results : COM administered UCCAO groups (CO50, CO150, and CO500) had no significant effects on nitric oxide production in ipsilateral hemisphere proteins and sera. The CO500, 500 mg/kg COM administration, attenuated UCCAO-induced p38 inflammatory signaling pathway and inflammatory mediators such as iNOS and COX-2. The CO500 group showed resilient morphological changes of hippocampus neuronal cells about brain damage caused by decreased flow of blood. These group also showed decreased inflammation and cellular stress response in neuronal cells. Conclusions : From these results, COM has a neuroprotective property via moderating inflammatory factors and cellular stress inducing factors in brain cells.

• 한국식생활문화학회지
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• 제16권3호
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• pp.203-214
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• 2001

Maternal stress was very common symptom that every pregnant women could have experienced during pregnant period. We found that the causative factors of stress for subjects were physical change(50.8%), family relationship(13.6%), change of body image(7.4%), concern baby(6.8%), economic difficulties(6.4%), depress(4.3%), morning sickness(3%), and miscellaneous(3.5%). According to our study, maternal stress during the first trimester negatively correlated with food and nutrients intake of pregnant women and gave low weight gain during pregnancy and low birth weight of infants. It also significantly correlated with monthly income(p<0.001) and monthly food cost(p<0.001) during pregnant period. Mean intake of Calcium and Iron were $47{\sim}60%$ of RDA and $35{\sim}48$ of RDA, respectively. With the Iron supplement the total intake of Iron exceeded 100% of RDA. We also found majority of food items, except seaweeds, fruits and vegetables, were negatively correlated with maternal stress during three trimesters. Additional support system projected by professionals in health-care field could mediate maternal stress and lead to healthy pregnancy outcome.

• 대한기계학회논문집
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• 제7권4호
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• pp.425-433
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• 1983

Fatigue tests by axial loading (R=0.1) were carried out to investigate fatigue crack growth properties of small surface cracks in mild steel at room temperature, 250.deg. C and 400.deg. C, by using flat specimens with a small artificial pit. All the data of the fatigue crack growth rate obtained in the present tests are determined as a function of the stress intensity factor range, so that the applicability of liner fracture mechanics to the fatigue crack growth of surface cracks at elevated temperatures is investigated and discussed in comparison with the data of type 304 stainless steel at room temperature and elevated temperature. The obtained results are as follows: 1) Relations of both surface fatigue crack length and its depth to cycle ratio fall within a narrow scatter band in spite of different stress levels. 2) The .DELTA. .sigma. .root. .pi. a-da/dN relation of surface fatigue crack growth at room temperature is independent of the stress level and can be plotted as a straight line at log-log diagram, but the relation at 400.deg. C depends partly on the stress level. 3) Relations of the fatigue crack growth into depth d(2b)/dN and is stress intensity factor range .DELTA. $K_{I}$, accounted for the aspect ratio variation, fall within a narrow scatter band for wide range of the applied stress levels. And .DELTA. $K_{I}$E-d(2b)/dN relations of mild steel at different stress level coincide relatively well with the data of type 304 stainless steel. 4) The value of aspect ratio obtained by a beach mark method and a temper coloring method approaches about 0.9 in common with crack growth and it is independent of stress level and temperatures. 5) The equi-crack length curve is parallel to S-N$_{f}$ curve at elevated temperatures.s.s.s.

• Korea-Australia Rheology Journal
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• 제19권4호
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• pp.183-190
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• 2007

Injection molding is one of the most common operations in polymer processing. Good quality products are usually obtained and major post-processing treatment is not required. However, residual stresses which exist in plastic parts affect the final shape and mechanical properties after ejection. Residual stresses are caused by polymer melt flow, pressure distribution, non-uniform temperature field, and density distribution. Residual stresses are predicted in this study by numerical methods using commercially available softwares, $Hypermesh^{TM},\;Moldflow^{TM}\;and\;ABAQUS^{TM}$. Cavity filling, packing, and cooling stages are simulated to predict residual stress field right after ejection by assuming an isotropic elastic solid. Thermo-viscoelastic stress analysis is carried out to predict deformation and residual stress distribution after annealing of the part. Residual stresses are measured by the hole drilling method because the automotive part selected in this study has a complex shape. Residual stress distribution predicted by the thermal stress analysis is compared with the measurement results obtained by the hole drilling method. The molded specimen has residual stress distribution in tension, compression, and tension from the surface to the center of the part. Viscoelastic deformation of the part is predicted during annealing and the deformed geometry is compared with that measured by a three dimensional scanner. The viscoelastic stress analysis with a thermal cycle will enable us to predict long term behavior of the injection molded polymeric parts.