• Journal of the Korean Society of Food Science and Nutrition
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• v.35 no.2
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• pp.212-218
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• 2006

Changes of paralytic shellfish poison (PSP) contents, toxicity and toxin composition with pH and storing periods at different temperature in toxic blue mussel, Mytilus edulis, were tested by using fluorometric HPLC method. Toxicity at pH 3 was the highest as 14.1 MU/g $(100\%)$ and showed 12.9 MU/g $(92.1\%)$ at pH 5, 9.0 MU/g $(63.8\%)$ at pH 7, 3.6 MU/g $(25.5\%)$ at pH 9 and 0.8 MU/g $(5.7\%)$ at pH 10 which suggested PSP was unstable at alkaline conditions. The decrease in toxicity during storage days was depend on pH and temperature. The toxicity markedly decreased until during the first S day storage $(19.9\~65.3\%)$ at all pH (3, 5, 7, 9) and temperature (30, 5, $-20^{\circ}C$), but, slightly decreased after then till to 30 days. C group toxin (C1 and C2) was the major components and other toxins such as GTX 1,2,3,4, STX and dcSTX were detected. Among the 8 toxins, GTX1,4, dcSTX and STX were firstly decreased according to the decreasing the toxicity at all processing conditions. The toxicity in blue mussel (14.1 MU/g) were able to remove by heating over 10 minutes at pH higher than 7.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.10
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• pp.332-340
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• 2019

This descriptive research study was undertaken to identify the degree of learning motivation, transfer climate, learning self-efficacy, and transfer motivation, and to correlate the variables, in nursing students receiving simulation-based education. The subjects of this study were 4th grade nursing students who completed a simulation course at a nursing university; data collected using the self-report questionnaire were analyzed using the SPSS 21.0 program. Our results indicate high values of learning motivation, transfer climate (including the lower variables supervisor's support, peer's support, and transfer opportunity), learning self-efficacy, and transfer motivation. Learning motivation, learning self-efficacy, and transfer motivation significantly differed with respect to social motivation for entering school (Z=6.04, p=0.049; Z=6.92, p=0.031; Z=9.16, p=0.010, respectively) and major satisfaction (Z=8.55, p=0.036; Z=12.55, p=0.006; Z=13.47, p=0.004, respectively). All these variables were positively correlated, especially transfer motivation with learning motivation, supervisor's support, peer's support, transfer opportunity, and learning self-efficacy. Taken together, the results of this study indicate a need to develop an effective simulation-based education program to encourage transfer motivation, as well as follow-up studies that verify the causal relationship between transfer motivation and related variables.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.7
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• pp.78-84
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• 2019

The purpose of this study is to investigate the relationship between risk perception, knowledge, risk attitude, and health promoting behaviors of nursing college students. The data were collected from 168 university students of four-year nursing college in the city of D, C. The collected data were analyzed by independent t-test, one way ANOVA and Pearson correlation coefficient using SPSS WIN 20.0 program. As a result this study knowledge of fine dust was statistically significant in respiratory disease(t=1.92, p<.001). The risk attitude toward fine dust was statistically significant in respiratory diseases(t=2.05 p=.042), subjective health status(F=3.79, p = .012). There was a significant positive correlation between risk perception of fine dust and knowledge(r=.340, p<.001), risk attitude(r=.492, p<.001), and health promoting behaviors(r=.354, p<.001). Knowledge of fine dust and risk attitude(r=.401, p<.001), health promoting behavior(r=.296, p<.001), risk attitude toward fine dust and health care behaviors(r=.550, p<.001) also showed a statistically significant positive correlation. Based on these results, it will be necessary to develop a program to improve awareness and knowledge of fine dusts in nursing college students and to improve health promoting behaviors.

• Journal of the Korean Applied Science and Technology
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• v.38 no.3
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• pp.813-823
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• 2021

This study was conducted to identify the factors affecting the compliance of standard precautions for nurses working in long term care hospitals. As a result of the analysis, 8.50 points in perception of the standard precautions, 3.76 points in health beliefs(subcategories- 4.03 points in perceived sensitivity, 4.04 points in perceived seriousness, 3.91 points in perceived benefits, 3.54 points in perceived barrier, 2.92 points in cues to action), 37.90 points in compliance status of the standard precautions. The performance of the standard precautions was positively correlated with perception of the standard precautions(r=0.419, p=.001) and health beliefs (r=0.443, p<.001), perceived sensitivity (r=0.169, p=.044), perceived barrier(r=0.486, p<.001), perceived benefits (r=0.207, p=.013), cues to action (r=0.204, p=.014). The compliance status of the standard precautions was influenced by the perceived barrier(β=0.373, p<.001), cues to action (β=0.271, p<.001), perception of the standard precautions(β=0.245, p=.004)explanatory power was 32.5%.

• Journal of the Korean Society of Food Science and Nutrition
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• v.46 no.1
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• pp.83-91
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• 2017

This study made jelly by adding Sansuyu (Corni Fructus) puree and examined the types and contents of gelling agents as well as the physicochemical characteristics of jelly depending on heating time. Water content of Sansuyu puree was 89.39%, pH was 2.92, sugar content was $10.28^{\circ}Brix$, and total polyphenol content was 1,791.71 mg GAE/100 g. As the added amount of Sansuyu puree increased, pH decreased slightly from 3.04 to 2.97, and yield stress decreased greatly. As heating time increased, red color was unstable and changed to yellow. When heated more than 5 min, jelly was not formed. The level of preference for jelly consisting of 10% Sansuyu puree, 1.5% agar, and 1.0% carrageenan was the highest at 5.15. Using pulp of Sansuyu, it will be possible to make jelly consisting of various bioactive substances.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.42 no.8 s.338
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• pp.53-60
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• 2005

Recently, sub-micron CMOS technologies have taken the place of III-V materials in a number of areas in integrated circuit designs, in particular even for the applications of gjgabit optical communication applications due to its low cost, high integration level, low power dissipation, and short turn-around time characteristics. In this paper, a four-channel transimpedance amplifier (TIA) array is realized in a standard 0.35mm CMOS technology Each channel includes an optical PIN photodiode and a TIA incorporating the fully differential regulated cascode (RGC) input configuration to achieve effectively enhanced transconductance(gm) and also exploiting the inductive peaking technique to extend the bandwidth. Post-layout simulations show that each TIA demonstrates the mid-band transimpedance gain of 59.3dBW, the -3dB bandwidth of 2.45GHz for 0.5pF photodiode capacitance, and the average noise current spectral density of 18.4pA/sqrt(Hz). The TIA array dissipates 92mw p in total from a single 3.3V supply The four-channel RGC TIA array is suitable for low-power, high-speed optical interconnect applications.

• The Korean Journal of Food And Nutrition
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• v.13 no.3
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• pp.255-262
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• 2000

포항지역 주민 500명을 대상으로 꽁치과메기의 기호도 조사를 한 결과를 요약하면 다음과 같다.과메게 용어 인지 여부에 대해서는 대부분 응답자가 알고 있었으며, 과메게 시식 여부는 92.5%가 먹어 보았으며, 먹어보 지 못한 7.5%에 대해 그 이유를 알아본 결과 먹고 싶지 않았다가 61.3%를 차지하였다. 연령별 시식 여부 차이 분석에서 나이가 많을수록 대부분 과메게를 먹어본 것으로 나타났다.(P<0.05). 과메기를 먹는때는 술안주로가 80.9%로 가장 많았다. 남(86.5%), 여(56.8%)모두 술안주로 먹는 경우가 가장 많았다. 간식으로 먹는 경우도 남자(6.6%)보다 여자(16.3%)가 많게 나타났다(P<0.05). 또한 연령이 많을수록 간식으로 먹는 경우가 많았다.이러한 결과를 놓고 볼때 사철과메기의 개발 또는 포항 꽁치과메기가 향통식품으로 자리잡기 위해서는 술안주로서의 과메기가 아니라 조리방법이나 스낵 등의 가공방법 개발 등을 통하여 반찬이나 간식으로 먹을 수 있어야 진정한 먹거리로서 자리잡을 수 있을 것이다. 과메기를 처음 먹은 꼐기는 주위의 권유로 먹은 경우가 57.9%로 가장 많았다. 연령별로 살펴보면 젊을수록 과메기를 주위의 권유로 먹은 경우가 많으며, 나이가 많을수록 먹음직스러워서 과메기를 처음 먹은 계기가 된것으로 나타났다.(P<0.05). 과메기 선호도는 92.5%가 과메기에 대해 호의적인 응답을 하였다. 남자가 여자보다 과메기를 더 선화하는것으로 나타났다.(P<0.05) 연령별로는 31~40세 연령층이 과메게를 가장 선호하는 계층으로 나타났다. 과메게를 먹을때 곁들여 먹는 것으로 과메기, 생미역,초고추장으로 먹는 경우가 가장 많았다. 포항 지역 주민들은 과메기를 먹을때 대부분 생미역과 곁들여 먹지만 초고추장 없이 먹는 경우도 적지 않았다. 대부분 3~10마리 정도 1회 먹는것으로 나타났으며, 20마리 이상 많이 먹는 주민도 남녀 거의 유사하게 나타났다. 따라서 여성층의 과메기 애호가도 많다는 것(5.6%)을 알 수 있다.(P<0.05)

• Asian Pacific Journal of Cancer Prevention
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• v.16 no.12
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• pp.4909-4913
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• 2015

Objective: To explore the preventive effect of aspirin on the cardiovascular complications in prostate cancer after endocrinotherapy. Materials and Methods: A total of 92 patients with prostate cancer were divided into observation group (n=44) and control group (n=48). The control group was treated with medical castration plus anti-androgenic drugs. Based on the above treatment, the observation group was added aspirin. The follow-up duration was 2 years. The changes of partial prothrombin time (PT), activated partial thromboplastin time (APTT), platelet aggregation rate (PAG), prostate-specific antigen (PSA) and serum testosterone (T) before and after treatment as well as incidence of cardiovascular disease were observed. Results: The 2-year survival rates of patients without cardiovascular disease in observation group and control group were 95.45% (42/44) and 72.92% (35/48), respectively, and significant difference was presented between two groups by comparison to the survival rates ($x^2=8.5453$, p=0.0035). There was no statistical significance between two groups as well as before and after treatment regarding PT (p>0.05). After treatment, APTT went down and PAG was gradually on the rise in control group, while PAG down and APTT on the rise increasingly in observation group. Significant differences were presented between two groups as well as before and after treatment (p<0.01). Both PSA and T levels were decreased significantly in two groups after treatment (p<0.01), but there was no statistical significant between two groups (p>0.05). Conclusions: Application of endocrinotherapy in prostate cancer can easily lead to occurrence of cardiovascular disease, but cardiovascular complications can be prevented by aspirin, without affecting the effect of endocrinotherapy.

• Korean Journal of Animal Reproduction
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• v.14 no.2
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• pp.147-154
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• 1990

To study effects of intratesticular injection of AgNO3 and latic acid solution(ALS) on castration, 50 heads of crossbred(Large Yorkshire$\times$Landrace) pigs were used. ALS(1% or 5% in concentration) was injected(0.2ml or 0.5ml in amout) to testes of pigs(weighing 7.7kg) unilaterally or bilaterally and changes of scrotum size, residual concentration of Ag, and steroid concentration in the blood were measured. The results obtained are summarized as follows : 1. The size of testis became swollen significantly(p<0.01) on the 3rd day after the treatment and then reduced to the same size before the treatment on the 26th day. 2. The residual concentration of Ag in the bilaterally treated pigs was similar to that of the control pigs, while it was lower in the unilaterally treated pigs than in the control pigs except the 1%-0.2ml treated pigs whose concentration was similar to that of the control pigs. 3. In 92 days after the bilateral injection, the testosterone concentration was higher significantly(p<0.01) in the 5%-0.5ml treated pigs than in the control pigs. However, in 120 days it was lower significantly(p<0.05) in the treated pigs than in the control pigs. 4. In 92 days after the bilateral treatment, the androstenedione concentration was lower significantly(p<0.01) in the 1%-0.5ml treated pigs than in the control pigs and it was also lower significantly(p<0.05) in the 1% or 5% treated pigs than in the control pigs on the 120th day after the treatment.

• The Plant Pathology Journal
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• v.29 no.2
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• pp.154-167
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• 2013

We previously developed a sequential screening procedure to select antagonistic bacterial strains against Phytophthora capsici in pepper plants. In this study, we used a modified screening procedure to select effective biocontrol strains against P. capsici; we evaluated the effect of selected strains on Phytophthora blight and anthracnose occurrence and fruit yield in pepper plants under field and plastic house conditions from 2007 to 2009. We selected four potential biocontrol strains (Pseudomonas otitidis YJR27, P. putida YJR92, Tsukamurella tyrosinosolvens YJR102, and Novosphingobium capsulatum YJR107) among 239 bacterial strains. In the 3-year field tests, all the selected strains significantly (P < 0.05) reduced Phytophthora blight without influencing rhizosphere microbial populations; they showed similar or better levels of disease suppressions than in metalaxyl treatment in the 2007 and 2009 tests, but not in the 2008 test. In the 2-year plastic house tests, all the selected strains significantly (P < 0.05) reduced anthracnose incidence in at least one of the test years, but their biocontrol activities were variable. In addition, strains YJR27, YJR92, and YJR102, in certain harvests, increased pepper fruit numbers in field tests and red fruit weights in plastic house tests. Taken together, these results indicate that the screening procedure is rapid and reliable for the selection of potential biocontrol strains against P. capsici in pepper plants. In addition, these selected strains exhibited biocontrol activities against anthracnose, and some of the strains showed plant growth-promotion activities on pepper fruit.