• Title/Summary/Keyword: pearl

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Comparative Ultranstructures of the Fertilized Egg Envelopes from Three-spot gourami, Pearl gourami and Marble gourami, Belontiidae, Teleost (경골어류 등목어과 Three-spot gourami, Pearl gourami 및 Marble gourami의 수정란 난막 미세구조 비교)

  • Kim, Dong-Heui;Deung, Young-Kun;Kim, Wan-Jong;Reu, Dong-Suck;Kang, Song Jian
    • Applied Microscopy
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    • v.29 no.3
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    • pp.343-351
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    • 1999
  • The structures of the fertilized egg envelope from three species, three-spot gourami (Trichogaster trichopterus), pearl gourami (Trichogaster leeri) and marble gourami (Trichogaster trichopterus trichopterus) belong to Belontiidae were observed, utilizing light, scanning and transmission electron microscopes. In all three species, the fertilized eggs were the colorless, transparent, spherical, adhesive and pelagic type. A large oil droplet was located in vitelline membrane of the fertilized egg. The egg envelopes have a single micropyle, which is thought to the pathway of sperm in the area of the animal pole. Specially, the micropyle of three-spot gourami was similar to that of marble gourami which is subspecies of three-spot gourami. An outer surface of the fertilized egg envelope was arranged by grooves in all three species. The fertilized egg envelopes consists of two distinct layers; an adhesive outer layer and an inner layer with high electron density. In conclusion, the morphological similarity of the fertilized egg, micropyle, outer surface and transverse section of the fertilized e9g envelope seems to be an indication of the Belontiidae.

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Studies on the Adaptability of Introduced Species from Australia for Grassland Establishment on Saline Land (Part II) (간척지(干拓地) 초지조성(草地造成)을 위(爲)한 도입호주품종(導入濠州品種)의 적응성(適應性) 조사(調査)에 관(關)한 연구(硏究)(제(第)II보(報)))

  • Kwon, Soon-Ki;Kim, Yong-Kook
    • Korean Journal of Agricultural Science
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    • v.4 no.1
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    • pp.61-65
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    • 1977
  • To select some salt tolerant pasture species for grassland establishment on the west coastal saline land in Korea, this work was carried out from March to October in 1976 with 5 pasture seeds mainly were introduced from Australia. On the soil salt content was 0.4%, all seeds germination were failure, but all species were survived on the 0.2% salt content land. The yield of forage were much better from Kikuyu grass and Pearl millet but poor from other species. The Meadow grass could be used for protect soil erosion by lot of tillers. By the result from this experiment, only Kikuyu grass and Pearl millet were possible to use for forage crops. But to continue this work, it is suggested to introduced more effective species such like Saltwater couch, Saltshore ryegrass, Puccinella, Salt bush, Blue buch, Samphire and so on.

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Development of Spaghetti Sauce with Adductor Muscle of Pearl Oyster (진주조개 패주 스파게티 소스의 개발)

  • Heu, Min-Soo;Kim, In-Soo;Kang, Kyung-Tae;Kim, Hye-Suk;Jee, Seung-Joon;Park, Tae-Bong;Kim, Jin-Soo
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.35 no.10
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    • pp.1484-1490
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    • 2006
  • This study was carried out to prepare spaghetti sauce with adductor muscle of pearl oyster (SSAM) and to compare with commercial spaghetti sauce (CSS). From the results of organic acid, pH, hunter color value and sensory evaluation, the optimal addition ratio of adductor muscle of pearl oyster was 11% based for preparing SSAM and reasonable $F_0$ value was about 4 min for keeping storage of SSAM. The proximate composition of SSAM was 69.8% for moisture, 3.7% for protein, 4.2% for crude lipid and 3.4% for crude ash. SSAM was superior in sensory flavor and texture to CSS. There was, however, no significant difference (p<0.05) in sensory color between CSS and SSAM. The total amino acid content (3,033.4 mg/100 g) of SSAM was higher than that (2,305.7 mg/100 g) of CSS and the major amino acids were aspartic acid, glutamic acid, leucine and lysine. Calcium and phosphorus contents in SSAM were 48.5 mg/100 g and 27.1 mg/100 g, respectively. Calcium level based on phosphorous was 1.78, which was a good ratio for absorbing calcium. The free amino acid content and taste value of SSAM were 989.4 mg/100 g and 141.04 mg/100 g, respectively These results suggested that the major taste active compounds among free amino acid were glutamic acid and aspartic acid.

Restoration Report on the Chosun Dynasty Lacquered Wares Inlaid with Mother-of-Pearl (조선시대 나전칠기 수리)

  • Yi, Young Hee
    • Journal of Conservation Science
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    • v.5 no.2 s.6
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    • pp.25-34
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    • 1996
  • The essential point to be considered when restoring lacquered ware is to know its materials and properties, and prior studios from the conservational and scientific examination is the way to achieve it. Recently, to get a close examination of its materials and methods involved in lacquered ware making, cross section microscope studies are being applied. Cross section microscope studies shows that lacquering process has been simplified and that bone and earth substances have been added to the materials, a method also traced from the lacquered wooden coffin excavated from the 'Nak Rang Tomb' and by the lacquered wares of the 'Kyongjoo An Ap' areas. The significance of this Chosun Dynasty lacquered wares's inlaid with mother-of pearl restoration can be found in that we have been able to harmonize the very traditional and the very modern scientific method of our time and that we were able to launch a step forward from using only the synthetics to open up a new range of natural materials such as lacquers, bone and earth substances, oxhide-glue and nacres and of referring to the traditional methods.

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Evaluation of Color Change According to Coloring Time of Dental Zirconia Block (치과용 지르코니아 블럭의 착색시간에 따른 색조변화 관찰)

  • Choi, Sung-Min;Nam, Sang-Yong
    • Journal of Technologic Dentistry
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    • v.33 no.3
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    • pp.219-224
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    • 2011
  • Purpose: The current study focused on investigating color change of dental zirconia block with respect to the block coloring time. Methods: Three types of dental zirconia blocks(Zirtooth, Pearl-HT, D-Max) were tinted with coloring agent under four different time condition (0 minutes, 1 minutes, 10 minutes, 30 minutes). The quantitative evaluation of the tinted dental zirconia blocks was conducted with spectrophotometer. Results: The Zirtooth and D-Max blocks showed lower H value. The Pearl-HT blocks showed poor reflectivity(L value). Conclusion: The study of color change of zirconia block, which consists the substructure of all ceramic Crown, is applicable for deciding appropriate coloring condition when fabricating one layer ceramic Crown or double layer ceramic Crown.

Effect of Nitrogen Gas Enriched Packing on Quality and Storage Life of Pearl Millet Based Fried Snack

  • Ajita, Tiwari;Jha, S.K.
    • Journal of Biosystems Engineering
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    • v.42 no.1
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    • pp.62-68
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    • 2017
  • Purpose: The storage life of pearl millet-based, deep fried, ready-to-eat snacks, packaged in aluminum-laminated polyethylene having a thickness of $50{\mu}m$ (with and without nitrogen) was evaluated under storage conditions of $38{\pm}2^{\circ}C$ and 90% RH. Methods: The moisture content, free fatty acids (FFA), peroxide value, and crispness of the snack were evaluated throughout the storage period. The moisture content, FFA, and peroxide value increased with an increase in storage period, but the increase was less in packages flushed with nitrogen gas. The crispness decreased with an increase in the storage period, for snacks both with and without nitrogen packages. However, the decrease was less in nitrogen-flushed packages. FFA and peroxide values were strongly correlated with the moisture content of the snack. The storage life of the snack was found to be 60 and 45 days in packages with and without nitrogen respectively. Conclusions: The snack's predicted storage life, for snacks with and without nitrogen packages, was determined as 294 and 254 days respectively.

A Study on the Furniture Design Applied with the Characteristic of Mother-of-pearl and Birch plywood (자개와 자작나무합판의 특성을 적용한 가구디자인 연구)

  • Song, Yoon-Sup
    • Journal of the Korea Furniture Society
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    • v.22 no.4
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    • pp.245-251
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    • 2011
  • The purpose of this research is to provide new direction on the field of the furniture design and to establish the identity of Korean furniture design as the flow of craft's juxtapose mixture era where it mix and match Korean traditional craft style materials with the modern furniture design. In other words, it is intended to create new furniture design and propose beautiful Korean luxury furniture design based on the precious unique culture with the traditional craft style, juxtaposition of modern furniture, and reinterpretation. It should grant artistic values that can satisfy consumers having various tastes and scarcity values, plus it should put out aesthetic and creative expressions in furniture design putting into the beautiful traditional craft form values. Furthermore, it is required to create new design through values and spirit, materials, techniques, forms, pattern, and usages by interacting, coordinating, and combining tradition and modern East and West, plus craft and design.

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Discourse of Minority Communities: Comparing Archetypal Heroes in Nguyễn Huy Thiệp's "The Tiger's Heart" (1971) and John Steinbeck's The Pearl (1947)

  • Nguyen, Thi Thu Hang;Nguyen, Thi Kim Ngan
    • SUVANNABHUMI
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    • v.14 no.1
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    • pp.53-70
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    • 2022
  • This article compares archetypal heroes in Nguyễn Huy Thiệp's "The Tiger's Heart" and John Steinbeck's The Pearl. It aims to explore the voices of marginalized groups and ethnic minorities who suffer amidst the clash of civilizations. In exploring cultural communication between minority and mainstream communities as embodied by the archetypal heroes in the two works, this article highlights implications of resistance against values of the dominant. The method of "mythization" in modern Eastern and Western Literature, as this article argues, demonstrates the importance of minority discourses in as far as cultural conflicts in the globalizing world are concerned.