• 한국수산과학회지
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• 제52권1호
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• pp.87-91
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• 2019

Effects of feeding frequency on the growth performance of juvenile starry flounder Platichthys stellatus were investigated. One thousand fifty fishes were distributed into 15 of 500-L flow-through tanks. Triplicate groups of were fed experimental diet with five feeding frequency (one meal every two days, one meal a day, two meals a day, three meals a day and four meals a day) for 9 weeks. Weight gain and specific growth rate (SGR) of fish fed two meals a day were higher than those of fish fed one meal 2 days and one meal a day, but not different from those of fish fed three meals a day and four meals a day. Feed consumption of fish fed two meals a day was not different from that of fish fed three meals a day and four meals a day. Feed efficiency (FE) and protein efficiency ratio (PER) of fish fed two meals a day were higher than those of fish fed all other diets, except for three meals a day. These results suggest that the optimal feeding frequency is two meals a day for the optimum growth performance of juvenile starry flounder under the experimental conditions.

• 한국환경복원기술학회지
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• 제22권2호
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• pp.73-92
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• 2019

The purpose of this study is to establish the conservation and restoration areas for sustainable stream management by reflecting the ecological health, cultural characteristics, and the citizens' needs for stream uses. Therefore, we extended spatial ranges of stream evaluation to riparian areas in addition to stream sections. The evaluation indexes are stream naturalness, availability, biota assessment, and riparian characteristics such as land uses and legally protected areas. The grading system was unified with five classes. The spatial evaluation units for stream section are classified as right and left for laterally and 500m for longitudinally. For riparian areas, 30m and 100m of distance from the edge of stream are applied as spatial evaluation units. The six types of stream sections for management are conservation sections(priority/general) and restoration sections(priority/general) for ecological landscape and core and general sections for cultural landscape. The established system for evaluation and designating areas for stream management was applied to Jeonjucheon and Samcheon in Jeonju-si, and the conservation and restoration areas were designated reflecting the characteristics of urban and non-urban areas and left and right of stream sections. The results of this study will provide detailed guidelines for designating stream sections and practical management strategies for sustainable urban stream management.

• 디지털융복합연구
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• 제19권1호
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• pp.261-274
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• 2021

본 연구에서는 간호대학생의 영적간호역량 강화를 위한 영성교육의 효과를 확인하였다. 2017년 2월 27일부터 5월 19일까지 J시 소재 간호대학생 83명이 연구에 참여하여 실험군 42명과 대조군 41명으로 무작위 배정되었다. 영성교육은 자기 인식과 영성 및 간호의 영적 차원으로 구성되어 1회에 120분씩, 5주 동안 총 10회기로 진행되었다. 수집된 자료는 대상자의 일반적 특성과 종속변수에 대한 동질성 검증을 확인하였고 가설 검증은 χ2-test, Independent t-test, paired t-test로 분석하였고, 시간 경과에 따른 변수의 변화는 실험군의 반복측정 분산분석으로 확인하였다. 영성교육은 간호대학생의 영성과 자아정체감, 영적 안녕과 삶의 만족도 및 영적간호역량을 높이는 것으로 나타났다. 또한 영성교육을 시행하고 5주 후에도 효과가 지속적으로 유지되었다. 이에 영적간호역량 강화를 위한 영성교육은 전인간호를 위한 영적 간호교육 과정에 긍정적인 영향을 미치며 활성화를 위한 실증적인 기초자료가 될 것이다.

• 한국수산과학회지
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• 제53권6호
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• pp.894-899
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• 2020

This study investigated the effects of inclusion of pollock oil (PO) in the diet of broodstock on the egg and larval quality of Walleye Pollock Gadus chalcogrammus. The experimental diet comprised of semi-moist pellets prepared either with or without PO (control; Con). The fish assigned to each diet were fed to visual satiation (two meals per day) for 12 weeks. Eggs spawned from both groups of fish were sampled during the spawning season (three months) and the egg and larval quality was determined. Total egg volume, fertilization, and hatchability of eggs from the PO group were higher than those of the Con group. Fatty acid composition of fertilized eggs was not affected by the experimental diet. Oleic acid, eicosapentaenoic acid, and docosahexaenoic acid content in larvae of the PO group was higher than that in larvae of the Con group. These results demonstrate the beneficial effects of including PO in the broodstock diet of Walleye Pollock, specifically on the quality of the eggs (total egg volume, fertilization, and hatchability) and larvae (fatty acid composition).

• 한국환경복원기술학회지
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• 제25권3호
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• pp.83-95
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• 2022

This study aims to present primary data for habitat restoration and artificial breeding conditions of L. unmunsana by identifying the habitat conditions and the larvae's food sources. In order to investigate the habitat characteristics of the adult L. unmunsana and land snails, which are the primary food sources for the larvae, field surveys were conducted on a total of 10 habitats in south-central parts of Korea including Sanseongcheon, Jeonju. The results revealed that the L. unmunsana habitat in the Sanseongcheon area had a broadleaf forest with a multi-layered vegetation structure, adjacent water features, and the north/northeast/northwest slopes with little effect of artificial lighting. The adult L. unmunsana in the Sanseongcheon area appeared from the end of May to the end of June, and was especially intensively observed around the middle of June. The most active time was from 23:30 to 00:30 with a temperature range of 19~22℃ and higher than 80% humidity. The peak count of the observed adults L. unmunsana was a total of 774 on June 11, 2021. In the case of land snails, 11 families and 23 species were observed in 10 habitats of L. unmunsana, and Euphaedusa fusaniana was the most extensive and the most observed in the five survey areas. The land snails of L. unmunsana habitats are mostly found under the organic layers of leaves and a fallen tree branch in broadleaf forests, where a thick organic material layer buffers temperature changes and provides high humidity for various snails. These habitat conditions are suitable for the larva of L. unmunsana and land snails to inhabit, feed, hide and hibernate.

• 대한의용생체공학회:의공학회지
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• 제43권3호
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• pp.170-176
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• 2022

Cell separation from a heterogenous mixture sample is an essential process for downstream analysis in biological, chemical, and clinical applications. This study demonstrates an integrated hybrid device of the viscoelastic focusing in a straight rectangular channel and subsequent size-based separation using acoustophoresis to attain high efficiency and separation tunability. For particle pre-alignment in a viscoelastic fluid, the flow rate higher than 10 μl/min was required. Surface acoustic wave-based lateral migration of particles with different sizes (13 and 27 ㎛) was examined at various applied voltages and flow rate conditions. Therefore, the flow rate of 100 μl/min and the applied voltage of 20 V_pp can be used for size-based particle separation.

• 한국식생활문화학회지
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• 제36권6호
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• pp.607-621
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• 2021

The elderly population is rapidly increasing in South Korea, and interest in food development considering the Sasang constitution theory from oriental medicine and balanced nutrition is increasing. We developed the oriental medicinal porridges based on the Sasang constitution for the elderly. By Sasang constitutional medicine, Taeyangin has a large lung and small liver, and Soyangin has a large stomach and small kidney. Taeeumin has a small lung and large liver, and Soeumin has a small stomach and a large kidney. In this study, proper oriental medicine and food ingredients were identified, and a total of 12 oriental medicinal porridges were developed for 3 items by 4 Sasang constitution types. A single portion was developed based on about 600±66kcal, and the food ingredients were chopped. After cooking the menu developed based on the Sasang constitution, a sensory test was conducted. Five items, such as taste, appearance, aroma, texture, and overall preference, were evaluated on a 7-point scale. Sewage omegaenggul porridge among porridges for Taeyangin had the highest overall acceptance (6.17±0.7 points). Sukjihwang abalone black sesame porridge for Soyangin had the highest score(5.83±0.9 points). Sanyakyulmu hwangtae porridge for Taeeumin had the highest score(5.90±0.6 points). Ginseng chicken curry porridge among porridges for Soeumin had the highest overall preference in taste, appearance, aroma, texture, and overall acceptability (6.53±0.7 points). A limitation of this study was that the clinical trial could not be conducted on the elderly classified as Sasang constitution. In the future, the elderly will be able to have oriental medicinal foods according to the classification of Sasang constitution.

• 대한한방부인과학회지
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• 제22권1호
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• pp.95-109
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• 2009

Purpose: This study was performed to determine the inhibitory effect of Sihosogansangagambang (SS) on melanin synthesis in B16F10 melanoma cells (B16F10). Methods: The inhibitory effects of Sihosogansangagambang on melanin synthesis were used by in vitro assay. To elucidate inhibitory effects of SS on melanin synthesis, we determined the melanin release in B16F10. And to investigate the mechanism of inhibitory effect of SS, we assessed the gene expression of tyrosinase, TRP-1, TRP-2 and ERK-1 in B16F10. Results: 1. SS decreased the release of melanin in B16F10 melanoma cells. 2. SS inhibited mushroom tyrosinase activity in vitro. 3. SS decreased the expression of tyrosinase, TRP-2 in B16F10 melanoma cells, but did not decreased the expression of TRP-1 in B16F10 melanoma cells. 4. SS decreased the expression of ERK-1 in B16F10 melanoma cells. Conclusion: From these results, it may be suggested that SS is possesed of the antimelanogenetic effects.

• 대한융합한의학회지
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• 제6권1호
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• pp.37-42
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• 2024

Objectives: This study aims to evaluate the clinical validity of the system by conducting a clinical study to assess the diagnostic agreement between the system and Korean medical doctors. Methods: This study was conducted from September 7, 2023, to December 7, 2023, across five Korean medicine institutions, involving 100 adult participants aged 20-64 who consented to participate. Participants first entered their symptoms into a web-based program, which utilized an AI-based algorithm to diagnose 36 types of pattern differentiation. Subsequently, Korean medical doctors conducted face-to-face diagnoses using the same 36 types. The diagnostic agreement between the system and the doctors' diagnoses was analyzed using descriptive statistical analysis, and the results were expressed as a percentage agreement. Results: Analysis of the diagnostic data from 100 participants revealed that the web-based diagnosis support system identified an average of 7.76±0.79 patterns per patient, while Korean medical doctors identified an average of 7.99±0.10 patterns per patient. The diagnostic agreement between the system and the doctors showed an average of 7.08±1.08 patterns per patient, with an overall diagnostic agreement rate of 88.57±13.31%. Conclusion: This study developed a web-based diagnosis support system for traditional Korean medicine and evaluated its clinical validity by assessing diagnostic agreement. Comparing the diagnoses of the system with those of Korean medical doctors for 100 patients, the system showed an approximately 89% agreement rate with the clinical diagnoses. The system holds potential for aiding Korean medical doctors in pattern differentiation diagnosis in clinical practice.

• 대한영양사협회학술지
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• 제8권4호
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• pp.408-414
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• 2002

The purpose of this study was to develop the standardized manual for dietetic internship. The general information of the dietetic internship program in Korea was gathered and of dietetic internship(DI) in the USA was also surveyed. The existence of DI program manual, the number of intern and length of the dietetic internship program, and other general information were investigated. At first, the questionnaire was developed and mailed to 130 hospitals in Korea and the number of returned questionnaires was 42 showing participating rate of 28%. Second, telephone survey was carried out and the number of response was 40 out of 46 participating rate of 87%. The results of this study could be summarized as follow. 1. eneral informations of dietetic internship program in Korea; The hospital having a dietetic internship program was 31.7% and of them 14.6%(12 hospitals) have a manual developed by themselves. The number of dietetic intern per hospital was 2.0$\pm$ 1.4. The length of the program was from 3 to 12 months. Ten hospitals (38.5%) have a only food service program and 16 hospitals (62.5%) have both food service and clinical program. Seventy one percent (58 hospitals) of total hospital were willing to use the well developed standardized dietetic internship manual. 2. eneral information of Dietetic Internship Program in the USA; Two hundred fifty nine hospital had the dietetic internship program approved by ADA. The number of dietetic intern in each hospital was 10.6$\pm$ 6.3. The mean length of the program was 13.6$\pm$ 6.3 months. Twenty seven percent of institution have coordinated internship/masters degree program. The range of tuition for DI program was from 300 to 30,855(otherwise, interns were payed by the hospital in Korea). As a conclusion, the standardized dietetic internship program for the clinical dietitian as nutrition professionals to carry out their job at the hospitals should be developed. And the coordinated internship/masters degree program could be considered to improve the skill levels and job performances of clinical dietitian.