• Journal of Korea Society of Industrial Information Systems
• /
• v.19 no.3
• /
• pp.1-7
• /
• 2014

This paper describes the implementation of high speed comparator for the ATE (automatic test equipment) system. The comparator block is composed of continuous comparator, differential difference amplifier(DDA) and output stage. For the wide input dynamic range of 0V to 5V, and for the high speed operation (1~800MHz), high speed rail-to-rail amplifier is used in the first stage. And hysteresis circuits, pre-amp and latch are followed for high speed operation. To measure the difference of output signals between the two devices under test (DUTs), a DDA is applied because it can detect the differences of both common signals and differential signals. This comparator chip was implemented with $0.18{\mu}m$ BCDMOS process and can compare the signal difference of 5mV up to the frequency range of 800 MHz. The chip area of the comparator is $620{\mu}m{\times}830{\mu}m$.

• Journal of Environmental Science International
• /
• v.15 no.5
• /
• pp.485-491
• /
• 2006

In the aqueous solutions the dephosphorylations of isopropyl phenyl-4-nitrophenyl phosphinate(IPNPIN) mediated by hydroxide$(OH^{\theta})$ and o-iodosobenzoate$(IB^{\theta})$ ions ate relatively slow, because of hydrophobicity of the substrate, and however it appears that $OH^{\theta}$ is inherently better nucleophile than $IB^{\theta}$, which is more soft ion. On the other hand, in cetyltrimetyiammonium bromide(CTABr) solutions which contain cationic micelles, the dephosphorylations of IPNPIN mediated by $OH^{\theta}$ or $IB^{\theta}$ ate very accelerated to 120 or 100,000 times as compared with those in the aqueous solutions. The values of pseudo first order rate constants reach a maximum with increasing. Such rate maxima are typical of micellar catalysed bimolecular reactions and the rise in rate constant followed by a gradual decrese is characteristic of reactions of hydrophobic substrates. In the cationic micellar solutions of CTABr, $IB^{\theta}$ accelerates the reactions much more than that $OH^{\theta}$ does. The reason seems that $IB^{\theta}$ which is more hydrophobic and soft ion than $OH^{\theta}$ is more easily moved into the Stern layer of the CTABr micelles than $OH^{\theta}$. In the anionic micellar solutions of sodium dodecyl sulfate(SDS), the dephosrhorylations of IPNPIN ate slower than those in aqeous solutions. It means that $OH^{\theta}$ or $IB^{\theta}$ cannot easily move and approach to the Stern layer of the micelle in which almost all the hydrophobic substrate are located and which has a negative circumstance.

• The Korean Journal of Food And Nutrition
• /
• v.24 no.3
• /
• pp.386-395
• /
• 2011

The purpose of this research was to study food behaviors and nutrient intakes according to body mass index(BMI) and body image recognition in 211 female university students in Incheon. The majority of the surveyed subjects were in the normal range for BMI. Most of these female university students preferred a thin body type and were not satisfied with their body shapes. Most also controlled their body weight for appearance by exercising and limiting food intake. The obese group often ate processed foods(p<0.01) and ate out(p<0.05). The underweight group and normal-weight group took vitamins and supplements more frequently(p<0.001). Those students who recognized their body image as a 'fat shape' had good appetites(p<0.05) and those who recognized themselves as 'normal shape' considered food formulations ate every meal (p<0.05) and consumed vitamins and other supplements frequently(p<0.01). The mean calorie intake of all students was about 80% of the recommend amount, so there was a risk of lack of various nutrients. The 'fat' students by body image recognition had lower calorie intakes in order to reduce body weight. In all the groups, there was a lack of vitamins $B_1$ and $B_2$, as well as the minerals Ca and Fe. Therefore, education on correct body image recognition and training on proper weight control are deemed necessary. In addition, education and counseling on nutrition that are tailored to individual status are needed.

• Korean journal of food and cookery science
• /
• v.30 no.2
• /
• pp.170-182
• /
• 2014

The study surveyed the dietary behavior, food intake, and food preference for breakfast of elementary, middle, or high school students, a total of 354 boys and 305 girls. The students skipped breakfast due to no appetite, followed by no time. Elementary school students ate grains and potatoes more often than middle or high school students(p<0.05), and bap was the most frequently consumed cereals, with juk and tteok as the least. High school students ate meat, ham, sausage and boiled fish cake (eomuk) more often than the elementary or middle school students(p<0.05). Middle school students ate milk and dairy products as well as vegetables and fruits more often(p<0.05) than other foods. Preference for fish and fresh vegetables and salad was significantly high in middle school students. The score of dietary behavior was the highest in elementary school students, followed by middle and high school students(p<0.001). As the students advanced to the upper grade schools, breakfast skipping increased, with lowered dietary behavior scores. The results suggest that a variety of breakfast menus and recipes should be developed at home and schools by considering the preference of students in order to reduce breakfast skipping and to improve their satisfaction with breakfast.

• Asian Pacific Journal of Cancer Prevention
• /
• v.17 no.3
• /
• pp.1265-1267
• /
• 2016

Egg white intake during chemotherapy is common advice for cancer patients for the prevention of leukopenia. However, the benefit is uncertain. We conducted this prospective study to identify the relationship of egg white intake for gynecologic cancer patients who received carboplatin and paclitaxel and the occurrence of leukopenia. Between January 2014 and January, 2015, 81 patients were interviewed regarding their intake of egg whites before receiving subsequent chemotherapy. The basic data, the details of egg white intake and the grade of leukopenia in the previous cycle were recorded. The mean age was 54.1 years and 80% of the patients had a diagnosis of ovarian or endometrial cancer. The patients were interviewed at cycles 1-3 in 45 cases, 4-6 in 45 cases and 7-9 in two cases. Subsequent dose reduction was found in 6.2% and granulocyte-stimulating growth factors was given at 4.9%. All the patients ate egg whites with variations in the number of eggs per day as follows: less than one (3), one to two (56), three to four (14) and five to six (8). Over 70% were recommended by nurses to eat egg whites and about 63% of patients received other supplemental food. Some 44.1% of the patients who ate less than or equal to two eggs per day and 36.4% who ate more than two eggs per day developed grade 2-4 leukopenia, P = 0.61. In conclusion, the data did not provide evidence in support of the conclusion that a greater egg white intake could significantly reduce the occurrence of leukopenia.

• Korean Journal of Agricultural Science
• /
• v.38 no.3
• /
• pp.437-444
• /
• 2011

The object of this experiment was to investigate the food habits of sika deer fed with various roughage sources. The experimental trials were conducted at Unbong Animal Genetic Resources Station in 2008. The experimental roughages include five sources and 25 species in all; grasses and legumes: 5 species (mixed grasses, orchardgrass, tall fescue, alfalfa, white clover), native grasses and weeds: 5 species (mixed native grasses, Miscanthus sinensis Anderss, Arundinella hirta (Thunb.) Tanaka, barnyard grass, short awn, forage crops (hay, silages and straw): 5 species (barley + hairy vetch, Wheat + hairy vetch, rye silage, barley silage, baled rice straw), browse and fallen leaves: 5 species (mixed browse, oriental white oak, Quercus serrta Thunb., oriental cherry fallen leaves, Japanese chestnut fallen leaves), and imported hays and straws: 5 species (timothy hay, tall fescue straw, annual ryegrass straw, klinegrass hay, alfalfa hay). Five sika deer were used as experimental animals and the averaged body weight was 95+5.4kg. The chemical composition and dry matter digestibility of each roughage source and species were significantly different at the sampling area, plant species, growth stages and cutting period(p<0.05). The sika deer ate more roughages which had low fibrous contents, but high dry matter digestibility. Among all the 25 species of roughages, the favorite intake roughage sources ranking by sika deer was observed like this: browse and fallen leaves (32.2%), grass and legumes (27.0%), native grasses and weeds (22.0%), imported hays (12.9%) and forages crops (5.5%) respectively. Although, the sika deer ate more browse leaves, but ate more roughage which had low fibrous contents (NDF and ADF), but high drymatter digestibility. On the other hand, compared to each roughage source, total intake amount by sika deer was showed as browse and fallen leaves (32.2%). Based on the result, the food habit of sika deer seems to be closer to the typical browser.

• Korean Journal of Community Nutrition
• /
• v.11 no.4
• /
• pp.459-468
• /
• 2006

The purpose of this study was to investigate dietary habits, dietary attitudes, perceptions for nutritional importance, nutritional knowledge and frequency of food intake to get the basic data of effective nutritional knowledge to form desirable dietary habits of students. This study was carried out through a questionnaire. The subjects were 362 teenagers (boys 161, girls 201) in some farming and fishing regions of Jeonnam. The most desirable dietary habit was that both boys and girls never skipped their lunch, the undesirable dietary habit was that boys ate too fast and girls had too many snacks. While boys ate faster than girls (p < 0.01), girls skipped dinner more frequently than boys (p < 0.01). In terms of dietary attitudes, boys had more desirable attitudes than girls in that they "choose nutritious food" (p < 0.01), "enjoyed healthy food more than favorite food" (p < 0.01), "think about basic food groups when having something" (p < 0.01) while girls had more desirable attitudes than boys in that they "only have favorite food" (p < 0.01). In nutritional knowledge, girls showed a percentage of more correct answers than boys in "is likely to suffer anemia without enough iron" (p < 0.05), and "it doesn't need to eat fat, which causes obesity" (p < 0.05). In general, girls had higher nutritional knowledge than boys. For frequency of food intake, boys ate more fried and broiled food than girls (p < 0.05). In general, boys had nutritional unbalanced diets more than girls. As a result, girls had higher levels of nutritional knowledge and boys had more desirable dietary habits and attitudes. We should have systematic and repetitive education about nutrition so that teenagers could practice their nutritional knowledge in diets. Moreover, it is necessary to develop proper education for their genders.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.32 no.7
• /
• pp.1132-1146
• /
• 2003

The purpose of this study was to identify the eating habits and dietary consciousness of urban residents according to socioeconomic characteristics. The survey was administered by the nationwide 690 adults in February 2001. The survey was conducted by a questionnaire that was composed of 20 items. The results of this study show that 56.8% of the subjects had breakfast everyday and majority of them ate cooked rice (57.4%) or rice with mixed grain and bean (33.0%) as stable food for breakfast. 73.6% of the subjects ate out less than 5 times a month and, most of them preferred Korean dishes to Western dishes. The majority of the subjects had a meal regularly and they ate dinner abundantly with gusto compared to breakfast and lunch. Mean values of preference (5 point scales) for snack, salty and hot taste, and processed food were 3.07±0.89, 2.75±0.83, 3.28±0.90, 2.69±0.84 respectively. Interest (4 point scales) in eating safe and fresh food, balanced diet, and overeating calorieㆍsugarㆍsaltㆍfat were 3.26±0.66, 2.83±0.70, 2.89±0.75, respectively. As the purpose of eating, 44.8% of the subjects placed emphasis to supply nutrition but 16.6% put emphasis on physiologic desire. About half of the subjects needed to change their own eating habits. As improvement of their eating habits, the majority of them answered ‘balanced diet’. There were significant differences in eating habits and dietary consciousness of the subjects by socioeconomic characteristics. As the age goes down and education level goes up, they had wrong eating habits generally. For occupation, housewives had right eating habits but students were not. For interest in food and nutrition, male, 20' age-group, students and over college graduation group were worse than the other groups within each socioeconomic characteristic. Consequently, nutrition education for them is needed preferentially, also their socioeconomic characteristics must be considered in nutrition education.

• Korean Journal of Community Nutrition
• /
• v.16 no.4
• /
• pp.411-425
• /
• 2011

This study was conducted to examine differences in nutrient intakes by the compliance with the Dietary Action Guide for Korean Children. The subjects included 343 elementary school students in Gwangju city. Compliance with the Dietary Action Guide for Children showed that 62.4% of subjects had breakfast everyday; 44.3% of subjects ate vegetables/fruits/milk and dairy products daily; 26.8% of subjects ate a variety of lean meats/fish/eggs/bean products daily; 32.9% of subjects enjoyed outdoor activity everyday and ate according to their energy needs; 40.2% of subjects chose healthy and nutritious foods for snack; and 15.5% of subjects avoided food waste. Intakes of most of nutrients including energy were significantly higher (p < 0.05) in those who complied with the Dietary Action Guide well. Also nutrient intakes had the positive correlation with the scores of Dietary Action Guide (p < 0.05). From these results, nutrient intakes of children were significantly influenced by dietary factors suggested in the Dietary Action Guide for Children. In addition, the results also confirmed that good food behaviors were indispensible to maintaining a proper nutritional status. Based on these results, good food behaviors and practice were critical to secure good health and proper nutritional status for children, and that nutrition education should be strengthened in school as well as at home.

• Journal of the East Asian Society of Dietary Life
• /
• v.19 no.3
• /
• pp.339-349
• /
• 2009

The purpose of this study was to investigate dietary behavior relative to personality type in young adults, and to offer basic data to apply during nutrition education and counseling. A total of 166 university students performed the MBTI (Mayers-Briggs Type Indicator) test along with questionnaire interviews, and 3 day 24-hr dietary recalls. MBTI personality preferences are presented and separated by 4 types of indices: Extraversion (E) and Introversion (I), Sensing (S) and Intuition (N), Thinking (T) and Feeling (F), and Judgement (J) and Perception (P). More subjects in the I type than the E type had lunch everyday or ate out more than once a week. Compared to the P type, the J type ate a higher proportion of meals with family, and seldom drank alcohol, but a lower proportion had a preference for salty taste. Compared to the N type, the S type had a higher proportion of subjects who consumed large quantities at regular meals as well as when under high amounts of stress. Also, the S type subjects had significantly higher lipid intakes than the N type subjects. Compared to the F type, a higher proportion of the T type subjects ate meals alone but a lower proportion had a dislike for bitter tasting foods. There were no significant differences in total food or energy intakes relative to the different personality types. In conclusion, individual personality type may influence dietary behavior, but additional studies are needed that contain individuals of various ages and include long term dietary surveys.