• Journal of Animal Science and Technology
• /
• v.49 no.3
• /
• pp.395-404
• /
• 2007

This study was carried out to compare the physico-chemical and sensory characteristics of surimi manufactured by four different materials. We prepared surimi from alaska pollack, as the control, by washing method. The different treatments of surimi were manufactured by pH 11.0 adjustments with barren hen breast meat(T1), commercial mechanically deboned chicken meat(MDCM)-S. Co. (T2)and MDCM- J. Co.(T3). Whiteness, cohesiveness and overall acceptability were significantly higher but gumminess, chewiness and gel characteristics were significantly lower in control than other surimi samples(P<0.05). Lightness, brittleness, deformation, jelly strength and flavor were higher but texture properties and folding test of T1 were lower than those of other treatments(P<0.05). Texture properties, shear force and gel characteristics were higher, while deformation and acceptability of T2 were lower than those of other treatments(P<0.05). On the other hand, cohesiveness was higher, and lightness and whiteness were lower in T3 than those of other treatments(P<0.05). Correlation coefficients(>0.9) among texture properties and gel characteristics was positive, while negative among surface surimi colors(P<0.05). The content of crude protein, cohesiveness and gel characteristics indicated that the acceptable surimi can be made is replaced barren hen breast meat and MDCM.

• Journal of the Korean earth science society
• /
• v.25 no.7
• /
• pp.615-628
• /
• 2004

In order to elucidate seasonal sedimentary characteristics and depositional environment after construction of seawall on macrotidal flat, a seasonal observations of surface sediments (total 450) and sedimentation rates on 4 transects have been investigated for 2 years. The eastern area of Iwon tidal flat, has been changed from semi-closed coast to open coast by construction of seawall, shows general seasonal changes similar to characteristics of open coast type, which represented both fining and bad sorted distribution due to deposition of fine sediments under low energy condition in the summer, and relatively coarser and better sorted distribution because of erosion of fine sediments in the winter. In considering angles of transects, distribution patterns of surface sediments, the northern and southern parts of eastern tidal flat are dominantly influenced by wave and tidal effects, respectively. As time goes by, the eastern tidal flat shows coarsening-trend of surface sediments caused by direct effect of tidal current, were and typhoon. Meanwhile the western area of seawall, which has been re-formed by construction seawall, is sheltered from northwesterly seasonal wind. The seasonal change pattern of western area of seawall is slightly different from that of eastern tidal flat. Mean grain size and sorting of surface sediments during spring is finer and worse than those during summer. This seasonal change pattern maybe influenced by topographic effects caused from the construction of seawall. In consideration of all result, the transport of fine sediments in the study area, which is supplied to limited sediments, shows clockwise circulation pattern that fine sediments are transported from the eastern tidal flat to the western area of seawall because of blocking of seawall in the winter and are transported reversed direction the summer. As a result, many changes have been observed in the study area after construction of seawall; however, this change is still in progress and is expected to need continuous monitoring.

• Aerospace Engineering and Technology
• /
• v.9 no.2
• /
• pp.105-115
• /
• 2010

This technical paper describes and summarizes the flight test results for the longitudinal and lateal-directional dynamic stability characteristics. The target aircraft is the 4-seat carnard type aircraft, FireFly, which has been developed by KARI. Airborne sensors and real-time telemetry system are constructed to obtain the flight test data. The dynamic stability characteristics should be analyzed and tested by estimaitng the aerodynamic parameters in the dymaic equations of motion. The maximum likelihood estimation technique has been applied to the flight data from chirp, 3211, and doublet control inputs.

• Korean journal of applied entomology
• /
• v.58 no.3
• /
• pp.225-228
• /
• 2019

The genus Chrysaster Kumata is one of the members in Lithocolletinae of Gracillariidae (Lepidoptera: Gracillarioidea). Chrysaster hagicola Kumata, 1961 has been the only known species of the genus in Korea so far. In this study, we report another species, Chrysaster ostensackenella (Fitch, 1859) for the first time from Korea. The samples of C. ostensackenella were collected as larvae and adults on Robinia pseudoacacia L. (Fabales: Fabaceae). Diagnostic characteristics with a brief description are given, as well as, photographs of adults and genitalia of both sexes are provided. A further study on C. ostensackenella is strongly recommended, especially for the business of honey, as this species is recently known to be a serious pest on acacias (black locust) in China.

• Korean Journal of Food Science and Technology
• /
• v.31 no.2
• /
• pp.336-341
• /
• 1999

The composition of fatty acids, minerals, total dietary fiber and vitamin $B_{1},\;B_{2}$, in pigmented rice varieties were determined. Proximate composition and color were also compared among pigmented rice varieties. Crude protein contents of black rice were higher than those of red and brown rice, especially, Suwon 415 had the highest protein content. There were no significant differences in lipid and crude ash contents between pigmented rice and brown rice. Black rice showed lower Hunter value L, a and b value compared with red and brown rice. Most mineral contents of pigmented rice except Fe, Zn and Mn were higher than those of brown rice. Pigmented rice showed the higher contents in total dietary fiber, vitamin $B_{1}\;and\;B_{2}$ compared to brown rice. The major fatty acids of pigmented rice were palmitic acid, oleic acid and linoleic acid. The contents of oleic acid was similar to that of linoleic acid in brown rice. Oleic acid contents was lower than linoleic acid in black rice, but higher in red rice.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.42 no.1
• /
• pp.129-133
• /
• 2013

Hot pepper (Capsicum annum L.) is one of the most important ingredients in Asian food. The capsaicinoids, capsaicin and dihydrocapsaicin are responsible for more than 90% of the pepper's pungency. The objective of this study was to determine the amounts of these two major capsaicinoids in hot peppers cultivated from different regions in Korea. Peppers (Geumgochu) cultivated in 24 different regions of Korea were collected in 2011. The capsaicinoids of these plants were extracted with methanol and determined quantitatively by HPLC with a fluorescence detector. The capsaicinoid value ranged from 22.4 mg/100 g to 119.1 mg/100 g depending upon different regions. The average capsaicinoid content of the peppers from Gangwon and Gyeonggi was 66.73 mg/100 g, and the content from Jeonbuk and Jeonnam was 50.34 mg/100 g. However, average capsaicinoid content from these four different cultivation regions were not significantly different. Finally, analytical method validation parameters such as recovery, reproducibility, repeatability, were calculated to ensure the method's validity.

• Journal of the Korean Society for information Management
• /
• v.38 no.3
• /
• pp.73-99
• /
• 2021

The purpose of this study is to analyze the health information use experience of middle-aged people in their 40s and 50s and to observe and analyze their health information search behaviors according to health consciousness and health information orientation. This study uses Information Foraging Theory with the concept of information scents which leads users to detect and collect cues in information searching. Types and contents of information cues that middle-aged people use when searching for health information were investigated. Also, how their health consciousness and health information orientation affected using information cues were analyzed. Three methods of research were used; (1) pre-interviews, (2) search experiments, and (3) post-interviews. Thirty-two middle-aged people participated in the study. Their performance on health information searching was recorded and referred to in the post-interviews using a think-aloud protocol. Findings presented that middle-aged people's health consciousness and health information orientation affected the perception of information scents in health information search; those with high health consciousness and health information orientation consider the text made by the government office the most critical information cues. We believe findings from this study could be used for public libraries or non-profit institutions to understand middle-aged people's health information behaviors to design education programs for information retrieval considering users' health consciousness and health information orientation. Findings could also contribute to Internet portal site or health-related web site designers developing strategies for middle-aged users to access health information effectively.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.36 no.4
• /
• pp.332-339
• /
• 1991

본 시험은 1968-1990년까지 23년간을 동일시험구에서 무비구를 비롯하여 무질소구, 무인산구, 무가리구, 3요소구, 3요소+유기물구(퇴비 또는 생고), 3요소十석회구를 설치하고, 1990년수도품종 ‘진흥’을 공시하여 그 수량생산성과 미질의 외관 및 이화학적특성을 조사하므로써 장기간에 걸친 시비법이 수량과 양질미생산에 미치는 영향을 검토한 바 그 결과를 요약하면 다음과 같다 1 수량생산성은 3요소구에 비해 3요소+유기물구에서 3-7%의 증수효과가 있었으며, 1 증수요인은 수수와 1수당입수의 증가였다. 2. 무가리구의 수량은 85%로 등숙률의 저하가 감수요인이며, 무인산구는 74%로 수수의 감소가 감수요인이며, 무질소구와 무비구는 59-33%로 수수와 1수립수의 현저한 감소가 감소요인이었다. 3. 미질의 외관적 특성은 무비, 무질소, 무인산구에서 수량은 크게 낮은 반면에 완전미율이 높고 동할미, 심복백미율이 현저히 적으며 3미립의 투명도도 높아 양질의 외관을 보였다. 이에 대해 고수량을 보인 3요소＋유기물구(퇴비, 생고)에서 완전미율이 낮고 동할미, 심복백미율이 높고 투명도가 낮아 외관적 미질이 저하하는 경향이었다. 4 미질검정으로 이용되고 있는 물리적 특성인 알칼리붕괴성과 gel consistency는 처리간 차이를 인정할 수 없었다. 5. 식미의 량부로 평가하고 있는 미립의 화학적 특성은 처리간 차이를 인정할 수 있었다. 즉 단백질함량은 3요소＋유기물구에서 높고 무비구에서 낮았으며 Mg, Mg/K, Mg/KㆍN, Mg/KㆍN\ulcornerAmylose는 무비, 무질소, 무가리구에서 높고, 3요소+유기물. 3요소+석회구에서 낮았다 6. 이상과 같은 결과로 미루어 본 실험에 시용된 절대질소량은 많지 않음에도 불구하고 3요소＋유기물구는 유기물 분해에 따른 질소의 추비적 효과가 나타나서 무비, 무질소구에 비해 동할미, 심복백미 등 미립의 외관적 특성을 저하시키고, 단백질함량은 높이고 Mg/K\ulcornerNㆍAmylose를 낮추어 식미를 저하시키는 것으로 해석된다 7. 취급특성으로서의 흡수율, 취급액요드정색도, 취급용액출고형물은 처리간 명백한 경향을 발견할 수 없었다.

• The Korean Journal of Zoology
• /
• v.23 no.4
• /
• pp.251-262
• /
• 1980

Two Neanurid species of Collembola, Lobella minuta n. sp., and Morulina triverrucosa Tanaka, 1978 were identified from collections of South-Western part of Korea. They were, in addition, confirmed to be genera of new record to the country. From their common structure of simple mouth parts it was postulated that they may have both hypertrophy and polytene development of salivary glands in the light of early evidences by Cassagnau. These assumptions were tested for the above two Korean species using cytological and histological techniques. The results of the investigations have proved to be positive for the postulations, thus supporting hypothetical correlations of simple mouth parts with polytene development, irrespective of taxa, not limited to Neanurini as indicated in early works. However the structurization of the polytene chromosomes was shown of different extent between the two, i.e., in Lobella minuta, clearly more differentiated than in Morulina triverrucosa in spite of the strong similarity of mouth parts, which are to be seen as a distinct convergence from two tribes, Neanurini and Morulini. It remains to be studied consequently to know whether there as any factor other than mouth part structure affecting polytene development and also if the parallelism among a few different taxa of mouth parts would be the case with polytene development of salivary glands either.

• Korean Journal of Plant Taxonomy
• /
• v.36 no.1
• /
• pp.53-59
• /
• 2006

Here we report a previously unrecorded species of Korean Allium (Alliaceae) from Geomundo, Yeosu-si, Jeollanam-do. This taxon, A. pseudojaponicum Makino which has been known to distribute only in the southern part of Japan up to date, is easily distinguished from A. thunbergii G. don by lustrous evergreen leaves and lateral scapes as well as chromosome number (2n=32). The common name, 'Gaet-bu-chu', was newly given considering the property of habitat, which is the dry and rocky grasslands facing to the sea in Korea and Japan. In this study, we redescribe morphological characters, and provide illustrations of habit as well as photographs of habitat.