• Title/Summary/Keyword: staple

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Changes in Productivity and Morphological Characteristics of Zostera marina Transplants (이식된 잘피의 생산성 및 형태적 특성 변화)

  • Park, Jung-Im;Li, Wentao;Kim, Jeong-Bae;Lee, Kun-Seop
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.14 no.1
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    • pp.41-47
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    • 2009
  • Since significant losses of seagrass coverage have been reported from many parts of the world, numerous restoration projects through seagrass transplantation have been attempted worldwide. Different survival rates and establishment time of transplants have been reported depending on transplanting time and methods. The staple method, which is direct seagrass planting method using staples to anchor seagrass transplants on the sediments, have been widely adopted in seagrass transplanting because this method achieves high survival rates in various sediment environments. To assess the morphological plasticity and the growth characteristics of transplants, we transplanted eelgrass, Zostera marina in December 2004 using the staple method. Shoot density, morphological characteristics and leaf productivities of the transplanted shoots and shoots of natural eelgrass beds in the vicinity of the transplanting site and environmental parameters in the planting site were monitored for about 1 year postplanting monthly. Transplant shoot density increased without initial decline, while leaf width and sheath length of transplants decreased after transplanting. Leaf productivities per shoot of transplants also considerably lower than those of natural shoots for the first 3 months post-transplanting. Shoot density, morphological characteristics and leaf productivity per area of transplants became similar to those of natural population about 1 year after transplanting. Although eelgrass transplants might have experienced some transplanting stress during the early stage of the transplantation, transplants appeared to adapt well to new environments of the transplanting site.

Comparison of Oct-2-enyl and Oct-4-enyl Staples for Their Formation and α-Helix Stabilizing Effects

  • Pham, Thanh K.;Yoo, Jiyeon;Kim, Young-Woo
    • Bulletin of the Korean Chemical Society
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    • v.34 no.9
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    • pp.2640-2644
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    • 2013
  • The all-hydrocarbon i,i+4 stapling system using an oct-4-enyl crosslink is one of the most widely employed chemical tools to stabilize an ${\alpha}$-helical conformation of a short peptide. This crosslinking system has greatly extended our ability to modulate intracellular protein-macromolecule interactions. The helix-inducing property of the i,i+4 staple has shown to be highly dependent on the length and the stereochemistry of the oct-4-enyl crosslink. Here we show that changing the double bond position within the i,i+4 staple has a considerable impact not only on the formation of the crosslink but also on ${\alpha}$-helix induction. The data further increases the understanding of the structure-activity relationships of this valuable chemical tool.

Food Culture of the late Chosun dynasty in 『Jusiksiui (酒食是儀)』 (『주식시의(酒食是儀)』에 기록된 조선후기 음식)

  • Gha, Gyung-Hee
    • Journal of the Korean Society of Food Culture
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    • v.27 no.6
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    • pp.553-587
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    • 2012
  • In this study, the Korean cookbook, Jusiksiui, which was published in the late 1800s, was investigated. The results revealed that Jusiksiui contained more than 100 foods. Specifically, 12 staple foods were foods recorded including five types of porridge, three types of noodles, and four kinds of dumplings. Moreover, 49 side dishes were present, among which Jjim (steamed food) was most common, being recorded ten times. Additionally, seven types of Jeon (pancake) & Gui (roasted food) and Kimchi & Jangajji (pickled vegetables), four kinds of soup and Jeongol (stew), stir-fry, Sukyuk (boiled beef), and three types of Sukchae and Sashimi were found. Moreover, 14 recipes for rice cakes, two recipes for Korean cookies and three recipes for drinks were found. Seven recipes for wine, including plain rice wine, medicated wine and flavored wine, were also found. Finally, four different soy sauces Jibjang (a kind of soy sauce paste), hot pepper paste, Cheonggukjang (fast-fermented been paste), and Jeupjihi and roasting hot pepper paste were observed.

Effect of Heat Treatment on Dyeing and Physical Properties of Nylon 6 Ultramicrofiber (초극세 나일론 6 섬유의 염색성 및 물성에 미치는 열처리의 영향)

  • 정동석;이두환;이문철
    • Textile Coloration and Finishing
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    • v.14 no.6
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    • pp.328-334
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    • 2002
  • Nylon 6 staple ultramicrofiber(UMF, 0.074) and regular staple fiber (Regular, 2.0d) were annealed at In, 130, 160 and $180^\circ{C}$ under tension free for 10 min and U min. The treated fibers were dyed with Acid Red 18 and Blue n3. They were adjusted at PH 5.0 of dye bath in buffer solution of $CH_3COOH/CH_3/COONa(0.1mo1/1)$. Liquor ratio was kept at 1000:1. Dyeing rate of UMF annealed at $100^\circ{C}$ was decreased, but was increased for regular nylon. Also dye equilibrium of UMF at $100^\circ{C}$ was increased for Acid Red 18, but was decreased for Acid Blue 83. The intensities of X-ray diffraction peaks of UMF increased with increasing annealing temperature. Also the crystallinity of heat-sotted fibers by DSC thermogram was well agreed with the tendency of density Amino end group, moisture regain and water absorbency were decreased with increasing annealing temperature.

A Comparative Study on Decision of The In-Plane Permeability of the Geotextile (Geotexitile의 평면투수성 결정에 관한 비교연구)

  • 권우남;박희명;이상호
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.31 no.2
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    • pp.135-143
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    • 1989
  • The in-plane permeabilities for domestic geotextile products are calculated by some theoretical formulas and compared with them obtained by experiments to examine the suitability of those formulas. The results obtained are as follows: 1. It appears that the diameter of the filament yarn is larger and more uniform than that of the staple fiber according to the microscopic analysis on the geotextile 2. The in-plane permeability of the geotextile shows that the theoretical values by drag and channel theory is close to the experimental ones. 3. The porosity of the geotextile is hardly influenced by normal pressure. 4. In the case of the same thickness of the geotextile the side surface area of the filament yarn is larger than that of the staple fiber. 5. The capillary height of the geotextile shows that the theoretical values is close to the experimental ones and thick geotextile is higher than thin geotextile.

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