• Fisheries and Aquatic Sciences
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• 제1권1호
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• pp.82-93
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• 1998

Monthly changes of the gonad follicle index (GFI), reproductive cycle, egg-diameter composition, first sexual maturity of the Pacific oyster, Crassostrea gigas, were studied based on the samples which have been collected from the intertidal zone of Poryong west coast of Korea, from January to December, 1996. C. gigas, is dioecious, while a few individuals are alternatively hermaphroditic. Monthly variation of gonad follicle index (GFI) used for determination of spawning period, coincided with the reproductive cycle. GFI increased from April when seawater temperatures gradually increased and reached the maximum in May. And then, GFI sharply decreased from June to September due to spawning. Reproductive cycle of this species can be divided into five successive stages: in females, early active stage (March to April), late active stage (April to May), ripe stage (May to August), partially spawned stage (June to September) and spent/inactive stage (September to February); in males, early active stage (February to March), late active stage (April to May), ripe stage (May to September), partially spawned stage (June to September) and spent/ inactive stage (September to February). The diameter of fully mature eggs are approximately 50um. Spawning occurred from June to September, and two spawning peaks were observed in June and August when the seawater temperature was above $20^{\circ}C$. Percentages of the first sexual maturity of males of 20.1-25.0 mm in shell height were over $50\%$, while those of females of 25.1-30.0 mm in shell height were over $50\%$. All the males of > 30.1 mm and all the females of ^gt; 35.1 mm completed their first sexual maturity. The results suggest that C. gigas has a protandry phenomenon. Sex ratios of 919 oysters observed were 453 females $(49.29\%)$, 429 males $(46.68\%)$, 16 hermaphrodites $(1.74\%)$, and 21 indeterminate individuals $(2.29\%)$. In age class I, sex ratio of males were $64.00\%$, thus, a higher percentage than that of females. It was noted that $64.00\%$ of the young males (age class I) were more functional than females in age class I, but 2-3 year-old oysters showed higher percentage of females. Percentages of hemaphrodites in 2-3 year classes were relatively higher than those in other year classes. Histological pattern of hermaphrodites can be divided into two types: Type I (hermaphrodite having a number of newly formed developing oocytes on the oogenic tissues within a degenerating spermatogenic follicle after discharge of numerous spermatozoa) and Type II (hermaphrodite having two separate follicles in the same gonad).

• 산업융합연구
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• 제20권12호
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• pp.213-217
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• 2022

본 연구의 목적은 한국인 대상의 국민건강영양조사(2018년) 자료 중 30세 이상의 인구를 대상으로 나이, 신체활동 (걷기, 근력운동), 주관적 체형 인식, 체중의 변화가 주관적 건강 상태와의 관계를 알아보고자 하였다. 본 연구의 대상과 연구방법은 제7기 3차년도 국민건강영양조사 (2018년)를 이용한 이차분석연구이다. 나이, 1주일간 걷기 일수, 1주일간 근력운동 일수, 주관적 건강 상태, 주관적 체형 인식, 그리고 1년 동안 체중 변화 유무를 변수로 이용하여 주관적 건강 상태와의 상관성 분석을 SPSS를 활용하여 통계적 유의성 있는 결과를 활용하였다(p<.01). 7일(매일) 걷기를 한다는 응답율은 30-45세는 21.9%, 50-64세는 27.2% 그리고 65세 이상은 26.6%이며, 5일 근력운동을 한다는 응답율은 30-45세는 3.6%, 50-64세는 8.4% 그리고 65세 이상은 7.9%이다(p<.001). 주관적 건강 상태는 나이 (.091), 1주일간 걷기일수(.739), 1주일간 근력운동 일수 (.530), 주관적 체형인지(.256), 1년간 체중 변화(.303)에 대해서는 양의 상관관계가 있었다(p<.01). 본 연구에서는 주관적 건강 상태는 '나쁨'이라고 응답한 연령대는 65세 이상이 21.4%로 가장 높았으며, 그 다음으로는 50-64세는 15.7%, 30-45세는 11.0% 순으로 나타났다. 이는 걷기, 근력운동을 함으로써 주관적 건강 상태가 좋아질 것으로 기대할 수 있었다. 이러한 결과를 토대로 연령에 따른 개인의 주관적 건강 상태 향상을 위한 건강 관련 프로그램을 마련하는데 기초자료로 제공하고자 한다.

• The Korean Journal of Pain
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• 제20권2호
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• pp.255-257
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• 2007

Giant cell arteritis, which is also referred to as temporal arteritis, is defined as a systemic vasculitis in individuals over 50 years of age. Here, we report a case of giant cell arteritis combined with oculomotor nerve palsy. An 81-year old female patient experienced a headache for 10 days in her left temporoparietal area, that was characterized by a continuous dull ache and heaviness with intermittent shooting and lancinating pain. Her symptoms persisted in spite of receiving strong analgesics in another hospital. Upon physical examination, she was found to have marked tenderness over the left temporal area, especially along the path of the temporal artery as well as limitation of adduction, supraduction and infraduction of the left eyeball. At the time of admission, her erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) were 52 mm/hr and 3.94 mg/dl. In addition her brain MRI revealed no specific findings. Giant cell arteritis was suspected based on the clinical symptoms and signs as well as the elevated ESR and CRP. Oral steroid therapy started was started with an initial dose of 40 mg of prednisolone per day that was gradually tapered to 5 mg a day for 2 weeks. Her headache subsided one day after the steroid therapy and oculomotor nerve palsy was markedly improved after 2 weeks of the therapy. After 2 months she had recovered completely from her symptoms.

• Journal of Chest Surgery
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• 제44권2호
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• pp.137-141
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• 2011

Background: There is controversy about the benefit of surgical correction of an atrial septal defect (ASD) in patients over 60 years old. The purpose of this study was to determine whether surgical treatment is beneficial in those 60 years of age or older. Materials and Methods: We reviewed the clinical course of 57 patients (mean age: $63.54{\pm}5.59$ years) diagnosed with an isolated secundum ASD after the age of 60. The 24 patients (group A) who underwent surgical repair were compared with the 33 patients (group B) who were treated non-surgically. The mean follow-up period was $6.8{\pm}4.5$ years. Results: One operative death, 5 late deaths (20.8%) in group A, and 9 deaths (27.3%) in group B occurred in the study period. Symptomatic improvement was noted in 18 patients (75%) of group A after surgery. However 13 patients (39.4%) of group B showed symptomatic improvement during the follow-up period (p=0.012). The incidence of new atrial arrhythmia of the two groups was significantly different (16.7% vs 36.7%, p=0.038). The actuarial 10 year survival rate was 79% in group A and 73% in group B. Conclusion: Although surgical correction of ASD did not increase survival in patients over 60 years old, the surgical outcomes of ASD showed low operative mortality and resulted in symptomatic improvement in the majority of these patients. This study has shown the benefits of surgical closure of ASD even in advanced age in comparison to medical treatment.

• The Journal of Korean Physical Therapy
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• 제3권1호
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• pp.151-174
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• 1991

The purpose of this study is to research the actual conditions of industrial accident patients and to produce worker satisfaction and a rational and effective counter measure plan. Direct interviews with 179 cases (in and out patients) were carried out during a three month period from April to July 1990, at six hospitals : two general hospitals Sun Lin and Sung Mo in Po Hang, and four general hospitals in Taegu : Kyung pooh University Hospital, Dong San Medical Center, Young Nam Medical Center and Catholic Hospital. The results of this study are summarized as fellows : 1. Among the 179 cases, $51.6\%$ were male and $48.4\%$ were female. The two largest age groups were 30-39, $31.8\%$ and 20-29, $27.4\%$. Among the 179 cases, $51.6\%$ were married, the largest family number was 2 to 3, $41.1\%$ and 4 to 5, $25.6\%$. Educationally, graduation from high school was the largest group, $46.4\%$ among ,the patients, followed by middle school and primary school. The largest group income level was from 40-69 만원, $45.2\%$. The largest group of patients who worked over 50 hrs. a week was $52.0\%$. The largest group of patients who worked less than 1 year was $44.7\%$, of the patients in work places of less than 100 people, $60.3\%$ were injured and in work places of 100-299 people, $20.1\%$ were injured. In manufacturing, the largest group injured was $55.3\%$, the next group was transport, storage, communication. The largest group of production workers injured was $40.2\%$. 2. The cause of injury in the largest group was facility problems, $33.5\%$. The next group was unsafe habits, $30.2\%$ ; a lack of safety knowledge, $17.9\%$ ; and insufficient supervision, $12.3\%$. The 30-39 year age group head the highest number of injuries, $40.4\%$ ; work places with more than 10 years of work, $44.4\%$ ; work places with more than 1000 people, $56.3\%$ and mining accidents, $80.0\%$. Among. these groups the highest cause of injury was due to facility problems. 3. The accident pattern showed machinery injuries $28.5\%$ as the largest group, followed by falls & falling objects $17.3\%$, fire & electric $15.1\%$, strucke by an object $14.5\%$, followed by overaction and vehicular accidents. The accident pattern showed $46.4\%$ among workers over the 50 year age group, workers in the 5-10 year group, $50.0\%$ ; places employing more than 1000 workers, $35.3\%$ ; construction $73.7\%$, and construction workers $57.1\%$, among these fall & falling objects caused the greatest number of injuries. 4. The largest group of injuries was fractures $54.8\%$, trauma $14.5\%$, amputation $11.7\%$, open wound, and burns. The largest number of fractures occurred in people in the 30-39 year age group, $63.2\%$ : over 10 years of work, $55.0\%$ ; in work places of 300-490 people, $63.6\%$ ; construction $63.2\%$ and general workers $57.2\%$. 5. The largest group of injuries was upper extremity $45.3\%$, lower extremity $24.0\%$, trunk $18.5\%$ and head or neck $12.2\%$. Of these groups, upper extremity injuries were the highest in those less than 20 years old $75.0\%$, less than 1 year or work $59.5\%$, in work places of 500-999 people $60.0\%$, manufacturing $56.6\%$ and production workers $55.6\%$. 6. Periods of injury showed 34 people injured in September, to be the largest followed by October, 32 ; August, 22 people : July, 19 people and the lowest December, 2 people. During the week, Friday had the largest group injured, 35 people ; followed by Saturday, 26 people and the lowest was Wednesday, 17 people, During the day 1400 hours had the largest group injured, 38 people ; followed by 800 hours, 31 people. 7. On a basis of 5 as the highest mark, the average, according to worker satisfaction showed facility safety 3.55, work environment 3.47, income 3.44, job 3.21 and treatment 2.98. 8. The correlation between general characteristics and injury showed that age was directly correlated to the duration of work (r=2591) p<0.01, age was directly correlated to industry (r=2311) p<0.01, and the duration was directly correlated to occupation (r=4372) p<0.001.

• Journal of Preventive Medicine and Public Health
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• 제34권4호
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• pp.323-330
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• 2001

Objective : To examine the association between age at menopause and mortality in a population-based sample of women in Kangwha, Korea. Methods : From the Kangwha Cohort, followed-up from 1985 to 1999, the data of the over 55 year old female group(n=3,596) was used in this study to examine the association between age at menopause and mortality. We calculated the all causes mortality risk ratio and the cancer mortality risk ratio by age at menopause grouping using the Cox Proportional Hazards Model with adjustments for age, BMI, smoking, education, chronic disease, self-rated health status, alcohol consumption and age at first birth. Result and conclusion : Compared to women who had menopause at 45-49 years, the all causes mortality risk ratio was 1.24 for women with menopause at less than 40 years(95% CI=1.01-1.53) and 1.05 for women with menopause at over 50 years(95% CI=0.92-1.20). Also, compared to women who had menopause at 45-49 years, the cancer mortality risk ratio was 1.53 for women with menopause at less than 40 years(95% CI=0.78-2.98) and 1.17 for women with menopause at over 50 years(95% CI=0.77-1.80).

• 대한두경부종양학회지
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• 제36권2호
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• pp.17-20
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• 2020

Background: Compared to the frequency of occurrence of pre-auricular skin tag, cervical chondrocutaneous branchial remnants is one of congenital, benign neck masses that is very rare all over the world. Most of these rare anomalies are reported in case reports and especially, rare cases of unilateral cervical chondrocutaneous branchial remnants have been reported in Korean. Materials & Methods: A 9-year-old male patient visited the hospital on September 2017 for a rod-shaped mass. As a simultaneous diagnosis and treatment method, complete surgical excision was executed. Results: Excised mass was 0.5cm in diameter, 1.2cm in. Histologically, a hyaline and elastic cartilage was found in the core. As a family history, the same remnant was found in the right Anterior neck area of his mother. Conclusion: In this case, it is possible to diagnose and treat simply at the same time and even an optimal aesthetic result can be obtained.

• 한국의류산업학회지
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• 제22권3호
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• pp.323-334
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• 2020

This study analyzed the effects of consumers' characteristic variables on information search and purchase decisions in a decision-making process that validated the path model in purchasing apparel products. In constructing a structural equation model using AMOS 19.0., the variables including enjoyment pursuit, price pursuit, product involvement and product risk were selected as consumers' characteristic variables affecting the stage of information search. A questionnaire was distributed to consumers over 20 years old who purchased apparel products using offline and online channels within one year; consequently, we were able to analyze 468 effective data. The results were as follows. First, the path model of this research proved to be the appropriate model explaining the effects of consumers' characteristic variables on the stage of purchase decision-making. Second, enjoyment pursuit had a significant positive influence on offline information search; in addition, price pursuit and product risk affected the online information search significantly. Product involvement affected online information search as well as offline information search. Third, the offline information search affected offline purchase and online information search affected online purchase. However, consumer's channel switching behavior between the stage of information search and the stage of purchase decision was not proven. The findings suggest that companies need to develop distribution strategies according to consumers' characteristic factors that effect consumer's purchase decision-making.

• 한방안이비인후피부과학회지
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• 제31권2호
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• pp.152-159
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• 2018

Objectives : The aim of this study is to report the effect of Korean medicine treatment on diabetic retinopathy vitreous hemorrhage. Methods : A 66-year-old female who had diabetes for over 20 years showed vitreous hemorrhage of Grade 4 at initial visit. For about 2 months, acupuncture, moxibustion and herbal medicine treatment were performed. Prognosis was confirmed by funduscopic examination, automatic refractive examination and visual acuity test. Results : In the fundus photographs, we can observe the recovery of turbidity in Grade 4, which decreases to Grade 1, and the result of refraction in the right eye and visual acuity that was not measured when the turbidity is severe. Conclusions : This study was a case of a patient with diabetic retinopathy vitreous hemorrhage complaining of decreased visual acuity. Patients were given herbal medication, acupuncture and moxibustion. Through the funduscopic examination, the treatment effect on the absorption of vitreous hemorrhage was confirmed.

• Archives of Plastic Surgery
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• 제45권2호
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• pp.180-184
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• 2018

Breast deformity, in post-burn patients, is a common problem leading to lower self-esteem and reclusive behavior that impairs quality of life. The authors present the course of treatment of an 18-year-old immigrant girl who suffered second- to third-degree burns over approximately 20% of her total body surface area in her early childhood. The second- to third-degree burns were located on her right trunk and abdomen, as well as her right shoulder, neck, and right groin area. Since it was not offered in her home country, reconstructive surgery, including microsurgical breast reconstruction, was sought abroad. Due to the lack of available skin and soft tissue, a bilateral breast reconstruction with free transverse myocutaneous gracilis flaps was offered. This case illustrates one method of using microsurgery to address post-burn breast deformities in order to alleviate psychological suffering and improve quality of life.