• Journal of the Korean Society of Visualization
• /
• v.9 no.4
• /
• pp.69-73
• /
• 2011

Butterflies have been known to suck viscous liquids through a long, cylindrical proboscis using the large pressure difference formulated by the cyclic expansion and contraction of a muscular pump located inside their head. However, there are few studies on the liquid-feeding phenomena in a live butterfly, because it is hard to observe the internal morphological structures under in vivo condition. In this study, the dynamic motion of the pump system in a butterfly was in vivo visualized using synchrotron X-ray micro-imaging technique to analyze the liquid-feeding mechanism. The period of the liquid-feeding process is about 0.3sec. The expansion stage is about two times larger than the contraction stage in one cycle. The cyclic variation of pump volume generate large negative suction pressure and the pressure difference inside the long proboscis of a butterfly is estimated to be larger than 1atm.

• Journal of the Korean Society of Food Culture
• /
• v.17 no.4
• /
• pp.473-481
• /
• 2002

Pyebaek of Jeonju area based on the method prepared by late old madame Park, Bokja can be characterized as follows: First, vegetables which could be obtained locally constituted the main body of materials of Jeonju Pyebaek and animal foods used in Pyebaek were dried fishe for the most of times. In the pre-refrigerator era, the main reason behind the heavy uses of dried fish such as dried abalone or octopus instead of animal foods can be attributed to the easy availability of dried fish. In recent years, foods made of animal foods has been indispensible items. Second for the patterns and decorations of Pyebaek natural figures such as birds, flowers, butterflies, loaves and half moon were imitated in making of octopus cuttings, squid cuttings, Yakkwa, Hwajeon, Dried persimmons, Jeonbokssam, etc. Beef jerky, Yeotgangjeong were decorated beautifully with pine nuts, shredded dried dates and raisins. Many colors were used in various items of Jeonju Pyebaek such as Hwajeon, Songpyun, Saji. Finally, flavors of Jeonju Pyebaek are sweet and tasty of sesame oil.

• Journal of Environmental Science International
• /
• v.22 no.6
• /
• pp.679-686
• /
• 2013

Based on the survey of East Lake Park, South Lake Park and Tian Waicun in Tai'an by questionnaire survey, on-the-spot investigation and in-depth interview, the paper analyzes the tendencies of visitors to the animal elements and animal landscape in landscape architecture from three terms: primary attributes, the cognition of animal elements and animal elements landscape preferences. We have drawn several conclusions: the landscapes of animal elements are in urgent demand by the public ; The animal elements having lovely image, auspicious meaning and local characteristics are the most popular application types of animal elements landscapes ; The most favorite types of animals and animal elements are: doves, cranes monkeys, pandas, butterflies, dragonflies, fold fish, dolphins, dragons and cartoon animals ; The popular landscaping techniques of animal elements are the methods of combining with plants, buildings and garden ornaments.

• Transactions of the Korean Society of Mechanical Engineers B
• /
• v.28 no.12
• /
• pp.1511-1520
• /
• 2004

A flow visualization of the two-dimensional rigid fling-clap motions of the flat-plate wing are performed to gain knowledge of butterfly mechanisms that might be employed by butterflies during flight. In this numerical visualization, the time-dependent Navier-Stokes equations are solved for cyclic fling and clap types of wing motion. The separation vortex pair that is developed in the fling phase of the cyclic fling and clap motion is observed to be stronger than those of the fling followed by clap and pause motion(1st cycle motion). This stronger separation vortex pair in the fling phase is attributable to the separation vortex pair of the outside space developed in the clap phase as it moves into the opening in the following fling phase. Accordingly, higher lift and power expenditure coefficients in the fling after clap phase is caused by the stronger separation vortex pair.

• 제어로봇시스템학회:학술대회논문집
• /
• 2000.10a
• /
• pp.424-424
• /
• 2000

The implementation of a insect-based flying microrobot has been previously proposed as using magnetic force. The flying principle of a butterfly is different from that of a airplane, which obtain lifting force above the wings by a air stream with low pressure. Butterflies obtain lifting force below the wings by flapping. They can fly when drag during the down stroke is greater that during the up stroke. The structure of flying microrobot must satisfy these condition. And that must be manufacture lightly and keep balance for rising to the air sufficiently. Moreover the efficiency of an electromagnet is high and the flux density is sustained uniformly and widely Nevertheless these condition is satisfied, the implementation of a flying microrobot is very difficult as the flying microrobot has to fly without guides or sensor. We propose differently a new model il] comparison with that other paper has suggested. This imitates the form of the Korean shield-shaped kite.

• Ecology and Resilient Infrastructure
• /
• v.5 no.1
• /
• pp.54-58
• /
• 2018

Diet composition of amphibians usually reflects the distribution of potential prey within habitats, as well as their diet preference. We identified the diet items of Japanese tree frog (Hyla japonica) using a stomach flushing method in a rice paddy for the establishment of bio-monitoring systems of landscape changes. During the reproductive period, 71% of calling males had empty stomachs. All prey items in the stomachs belonged to the phylum Arthropoda, from eight orders of Insecta and one order of Arachnida. Among insect prey, the most common items in the stomachs were adults of beetles, flies and bugs, and larvae of butterflies and moths. There was a significant positive correlation between the body mass of Japanese tree frogs and the volume of prey items. Our results can provide a basic framework to guide the monitoring systems using prey identification of Japanese tree frogs.

• Fashion & Textile Research Journal
• /
• v.4 no.1
• /
• pp.31-39
• /
• 2002

The analysis revealed that the pattern represent the function of written language, the Miao's idea of nature as tie object of worship and exorcism, and their primitive thinking. The patterns are chiefly embroidered collars, shoulders of blouse, waist blind and hem lines of skirt. The design of patterns are animals and plants and geometrical figured. Most of patterns are dragon, fishes, birds, butterflies, which are liked by the Miao people. The patterns are highly imaginative and true to life, and are made with strong national and popular features.

• Animal Systematics, Evolution and Diversity
• /
• v.40 no.1
• /
• pp.94-101
• /
• 2024

Four species of green hairstreak butterflies, namely Ahlbergia ferrea, A. tricaudata, A. frivaldszkyi, and A. leei, belonging to the genus Ahlbergia Bryk, 1946 (Papilionidea: Lycaenidae), are examined in Korea. It was discovered that Ahlbergia frivaldszkyi, which was previously incorrectly reported in Korea, is actually A. leei. We report two species, A. frivaldszkyi and A. tricaudata as new additions to the Korean fauna. Detailed diagnoses of these four species are provided, including descriptions of both male and female genitalia, along with a key for identifying the four species found in Korea.

• Korean Journal of Environment and Ecology
• /
• v.26 no.3
• /
• pp.348-361
• /
• 2012

Altitude is a factor that plays an important role in the diversity, richness and composition of species. Recently, much attention has been paid to the distribution of butterflies and insects according to altitude. The purpose of this article is to propose a method to preserve and manage species efficiently by reviewing the distribution of butterflies according to different altitudes in Mt. Gyeryong National Park. This study found that the number of species and individuals decreased as the altitude increased, possibly due to the increased amount of shade caused by the crown density. When analyzing the factors influencing the distribution of species other than altitude, it was found that the slope, vegetative colonies and hydrosphere distance were correlated with the change in species distribution. As these species are closely related to food plants, it may save time and reduce the cost as well as allow an efficient evaluation of the bio-diversity if these species are selected as biological indicator species suitable for detecting the changes in the forest. It is judged to be a more efficient means of species preservation to accumulate and quantify the materials regarding environmental elements such as the climate, microclimate and food plants, as this would allow the butterfly distribution to be estimated.

• The Journal of the Korea Contents Association
• /
• v.21 no.4
• /
• pp.60-66
• /
• 2021

Various insects live around us. Nowadays, insects are raised as a hobby at home or medicinal insects are bred in large quantities for commercial purposes. In addition, various studies have been conducted to understand the various growth characteristics of insects. In the laboratory, environmental factors were changed to do that, but only the growth characteristics could be analyzed. However, it is almost not easy to measure the skin temperature or body temperature basically needed to reveal the growth characteristics in the case of insects. In particular, the results of experiments on the skin temperature of winged insects are very insufficient. In this study, the skin temperature of insects was photographed and measured for bees and butterflies living in natural conditions under various biological activity conditions such as at rest and during flight using a thermal imaging camera, a non-contact temperature measurement method. Through quantitative analysis of the experimental results, the relationship between the biological activity characteristics of each insect and the skin temperature resulting from such biological activity was investigated. In addition, it was confirmed that honeybees maintained different skin temperatures for three important activities, such as flying, honey collection, and relocation, and that the butterflies performed a warm-up stage for flight similar to the characteristics of moths.