• Title/Summary/Keyword: kinds of animal

Search Result 478, Processing Time 0.025 seconds

Spinning Apparatus for the Dragline Silk in the Funnel-web Spider Agelena limbata(Araneae: Agelenidae)

  • Park, Jong-Gu;Moon, Myung-Jin
    • Animal cells and systems
    • /
    • v.12 no.2
    • /
    • pp.109-116
    • /
    • 2008
  • Among the four kinds of silk glands in the funnel-web spider Agelena limbata, the ampullate gland for dragline silk production is the most predominate one in both sexes, and is composed of three functional parts-excretory duct, storage ampulla and convoluted tail regions. Two pairs of major ampullate glands send secretory ductules to the anterior spinnerets, and another two pairs of minor ampullate glands supply the middle spinnerets. There are no apparent differences between the major and minor ampullate glands not only the external spigots but also their internal silk glands. However, the microstructure is very unique in this spider, because each gland has spherical shaped storage sac with twig-like branched tails. Nevertheless, the wall of the secretory region is similarly composed of a single layer of epithelial cells. The mature secretory silks in glandular epithelium are closely packed and accumulated as electron-opaque vesicles. Most of the secretory products which originated from the rough endoplasmic reticula(rER) are grown up by fusion with the surrounding small vesicles however, the Golgi complex does not seem to play an important role in this process of secretion.

A study on the influence of Baekje costumes on Japanese costumes in ancient times (일본 고대 복식에 미친 백제복식의 영향)

  • Kim, Moon-Ja
    • Journal of the Korean Society of Costume
    • /
    • v.62 no.5
    • /
    • pp.96-107
    • /
    • 2012
  • In ancient times, immigrants from Baekje wore various kinds of costumes that provided technological and aesthetic guidance for the Japanese costume, which has been modified and changed in Japan. The clothing and ornaments were strongly influenced directly by costumes of the Baekje period; therefore, many of the Japanese costumes at that time were crafted in the Baekje style. Through the antique records, paintings of tombs and bequests, we were able to find similarities between Baekje and Japan costumes in these categories: clothes, headgear, belt hooks and belt plaques, bronze shoes, and ornaments. (1) Clothes : They wore high-shaped hat and jacket and trousers(;袴) tied the bottom. (2) Headgear : There was a gilt bronze Conical Cap attached to the long tube with terminals in the shape of a hemisphere. (3) Belt hooks and belt plaques: There were horse-shaped belt hooks in mane styles and a checkered pattern on the lower part of the haunch and a belt Plaque shaped like the face of an animal. (4) Gilt bronze shoes: They were made with the style that had two side plates fixed in the instep side and heel-side. (5) Ornaments : They were made with flower-shaped plaques and spiral-shaped decorations. One earring was made with a three-winged pendent that were connected in a chain style and the others were in unique forms that were made by connecting narrow rings and a heart-shaped pendent.

Two New Marine Sponges of the Genus Haliclona (Haplosclerida: Chalinidae) from Korea

  • Kang, Dong Won;Lee, Kyung Jin;Sim, Chung Ja
    • Animal Systematics, Evolution and Diversity
    • /
    • v.29 no.1
    • /
    • pp.51-55
    • /
    • 2013
  • Two new marine sponges, Haliclona (Haliclona) tonggumiensis n. sp. and H. (Reniera) sinyeoensis n. sp., in the family Chalinidae were collected from Ulleungdo Island and Gageodo Island, Korea from 2007 to 2009. Haliclona (Haliclona) tonggumiensis n. sp. is similar to H. (H.) simulans (Johnston, 1842) in shape, but the former differs in its ectosomal skeleton structure and spicules' shape and size. The ectosomal skeleton of H. (H.) tonggumiensis n. sp. is absent, but that of H. (H.) simulans is very regularly arranged, and has tangential reticulation with oxea. The spicule shape of H. (H.) tonggumiensis n. sp. is slender, but that of H. (H.) simulans is short and cigar-shape. The new species have two sizes of oxea, but H. (H.) simulans has one size of oxea. Haliclona (Reniera) sinyeoensis n. sp. resembles H. (R.) tubifera (George and Wilson, 1919) in the growth form and choanosomal skeleton structure. However, the new species has two kinds of oxea in size, but H. (R.) tubifera has only one size.

New bone formation in the maxillary sinus without bone grafts:Covering of lateral window with non-resorbable membrane or bony window (골이식재를 사용하지 않은 상악동 거상술:골창의 패쇄방법에 따른 치험례)

  • Son, Dong-Seok;Lee, Ji-Su;An, Mi-Ra;Sin, Hong-In
    • The Journal of the Korean dental association
    • /
    • v.46 no.4
    • /
    • pp.222-231
    • /
    • 2008
  • Various maxillary sinus floor augmentation techniques were common performed and in the most cases, many kinds of bone graft materials were used. The graft materials are autogenous bone or other biomaterials of human, animal or synthetic origin. But these cases report describes a new surgical technique by which dental implants are inserted in a void space created by elevating the sinus membrane without additional graft material in atrophic posterior maxilla. We created lateral bony window using piezoelectric device and elevated the schneiderian membrane in five patients and was repositioned with bony window in five patients, without any bone graft. From the clinical and histological results, it is found there is potential capacity for bone formation and placement of implants in the maxillary sinus without the use of bone grafts or bone substitutes.

  • PDF

Behavioral Function of the Anomalous Song in the Bush Warbler, Cettia diphone

  • Park, Shi-Ryong;Cheong, Seok-Wan;Chung, Hoon
    • Animal cells and systems
    • /
    • v.8 no.2
    • /
    • pp.89-95
    • /
    • 2004
  • The bush warblers (Cettia diphone) have been recognized to possess two types of songs: a normal song that plays roles in attracting mate and territorial defense, and an anomalous song. The present study suggests that the anomalous song functions as an alarm signal as well as other unknown signals. Field observations and playback experiments on the anomalous song of bush warbler were conducted in order to investigate the contextual information that occurred between sender and receiver. In the field observation, the males frequently emitted anomalous songs to potential predators. The males responded with an anomalous song to stuffed potential predators. The distance from where the anomalous song occurs to the stimulating source varied depending upon the kinds of stimulus. The males of bush warbler possibly show different responses to the anomalous song depending on the level of danger. When the anomalous song was played back to terrestrial males and females, no distinctive behavior was observed. The anomalous song may be sung to defend the territory against predators or to distract invaders from the nest and female because the male and female behaviors were related with the anomalous song and its phonetic characteristics.

Present State of Membrane Structures in Japan

  • Oda, Kenshi
    • Journal of Korean Association for Spatial Structures
    • /
    • v.2 no.2 s.4
    • /
    • pp.11-15
    • /
    • 2002
  • Formerly, it was called a tent and now, it is called membrane structure. If saying a tent, it imagines the tent of Bedouin, Mongolia and North American Indian. It became clear from the excavated wall painting that have been covered with the retractable roof of the canvas on the auditorium at the amphitheater in Pompeii and became a topic. These tents were made of the animal skins or fabric woven with the flax plants, and these tents are still used. However, if saying membrane material at present, it says the one to have applied a coating resin to the textile. Because the base fabric of membrane material is a woven fabric, the relation between the stress and the strain is different to the direction of the weaving thread. Moreover, the tensile force must always occur in the membrane surface. From these reasons, because the membrane structure corresponds to the particular building material and the construction method about the Building Standard Law, it must be examined specially that the membrane structural building have the same or any more safety as the provisions which was set to the Building Standard Law. Therefore, the technical standards about the membrane structural building became indispensable. In the paper, the kinds of the membrane materials, which are used for the membrane structural buildings, and technical standards process of the creating for the membrane structure buildings are introduced. Lastly, some of the soccer stadiums for 2002 FIFA World Cup KOREA/JAPAN which be covered with the roof of the membrane structures are presented.

  • PDF

Three New Records of Antipatharia (Anthozoa: Ceriantipatharia) from Korea (한국산 각산호류(산호충강: 꽃말미잘아강)의 3미기록종)

  • Moon Hye-Won;Song Jun-Im
    • Animal Systematics, Evolution and Diversity
    • /
    • v.21 no.2
    • /
    • pp.259-272
    • /
    • 2005
  • The antipatharians in Korea were known with three species and two genera belonging to family Antipathidae. In the present study, three species, Antipathes densa, A. grandiflora, and A. dubia, have been newly recorded to Korean antipatharian fauna with the samples collected from Jeju-do during the period from 2003 to 2005. The description was mainly based on the habitat, the branching mode of corallums, the size and arrangement of polyps and spines on the axis, and also the types of cnidae. They had three kinds of cnidae: spirocyst, basitrich, and microbasic p-mastigophore. Spirocysts and basitrichs were distributed at tentacles and microbasic p-mastigophores were mainly at septal filaments.

Anesthesia for the Experimental Rats (실험용 쥐의 마취)

  • Choi, Hee-Rack;Ko, Jong-Hyun;Lee, Hae Beom;Lee, Jun-Mo
    • Archives of Reconstructive Microsurgery
    • /
    • v.22 no.1
    • /
    • pp.1-6
    • /
    • 2013
  • Rats and mice are commonly used in experimental laboratories and anesthetic drugs are important for researchers to understand the details. Administration of fluids helps to stabilize the experimental animals before anesthesia via intravenously through the lateral vein in rats and in case of difficulty in catheterization and maintenance, fluids are usually administered as boluses. Large volumes of cool fluids will rapidly lead to hypothermia and all parenteral fluids must be warmed to body temperature before administration. Premedication with a sedative may ease induction with volatile anesthetic drugs. The first choice for rodent anesthesia is complete inhalational anesthesia. The second option is using injectable anesthesia. Recovery from the volatile agents that have been used rapid when the agent is no longer administered. Anesthetic monitoring equipment is an infant-size bell sthethoscope that can be used to ausculate the heart and lungs. Supplemental heating should be provided to reduce the heat loss supply and maintain core body temperature. The kinds of drugs, characteristics, route of administration and care after surgery were reviewed and summarized from the references. Anesthetic drugs, maintenance, monitoring and aftercare are important in the laboratories to keep the animal safe in all experimental procedures.

  • PDF

Protein Synthesis Pattern Analysis in the Regenerating Salamander Limb

  • Ju, Bong-Gun;Kim, Won-Sun
    • Animal cells and systems
    • /
    • v.4 no.2
    • /
    • pp.145-150
    • /
    • 2000
  • Retinoic acid (RA) evokes pattern duplication in the regenerating salamander limb. Interestingly, it also enhances dedifferentiation in the regenerate by the morphological, histological and biochemical criteria. To examine whether there is any correlation between the RA-evoked pattern duplication and de novo protein synthetic profile in the regenerating salamander limb, especially during dedifferentiation, we analyzed stage-specific protein synthesis pattern in the normal and RA-treated regenerating limbs by metabolic labeling followed by two-dimensional gel electrophoresis. In the regenerating limbs without RA treatment, a few hundred kinds of proteins were found to be synthesized at the stage of wound healing and the total number of protein synthesized increased greatly as regeneration proceeded. The same trend was also observed in the RA-treated regenerating limbs. Interestingly, some protein spots were noted to be either newly synthesized or highly expressed by the RA treatment especially at the stage of dedifferentiation. The results shows that the enhancement of dedifferentiation state after the RA treatment correlates well with the protein synthesis profile, and suggest that those proteins are important for the RA-evoked pattern duplication in the regenerating limbs of salamander.

  • PDF

Studies on movements and interchanges of Kimchi in China, Korea and Japan (중(中).한(韓).일(日)에 김치류(類)의 변천(變遷)과 교류(交流)에 관한 연구(硏究))

  • Lee, Sung-Woo
    • Journal of the Korean Society of Food Science and Nutrition
    • /
    • v.4 no.1
    • /
    • pp.71-95
    • /
    • 1975
  • The food product, so called 'Kimchi' was first shown as 'Jeo' in a old Chinese book, 'Sigyung', published about 2,600 to 3,600 years ago and it was differentiated into 'Jeo' and 'Jae' in the 'Jure'. The procedure for Kimchi making was explained in detail in the 'Jaeminyosul' and the Kimchi which was made of cereal grains was introduced into Japan through Bacje kingdom with the name of 'susugorisge'. Since then it was developed into characteristic ones of each country. In ancient time of Korea the detail record on Kimchi was not found but it began to show up in a poem written during Korea kingdom. The term of Kimchi which is being used now in Korea was first recorded on a dictionary about 400 years ago, and the Kimchi which used hot pepper was first shown in the 'Sanlimg-yungjae' about 300 years ago. The very favorable Kimchi for Korean containing various kinds of spices, animal foods, fruits, vegetables, seaweeds and 'judgal' was almost completed about 200 years ago and it was recorded in the 'Imwonsibyugi' and the 'Guhabchongsuh'.

  • PDF