• Title/Summary/Keyword: Black Chain

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Gamma fatty acid : A review (감마지방산 : 리뷰)

  • Park, Byung-Sung
    • Journal of the Korean Applied Science and Technology
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    • v.25 no.4
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    • pp.446-458
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    • 2008
  • Essential fatty acids (EFA) are fatty acids that must be obtained from the diet because they can not be biosynthesized by human or animals. Gamma fatty acids contain gamma-linolenic acid (GLA, 18:3n-6) and dihomo-gamma-linolenic acid (DHGLA, 20:3n-6) as intermediate metabolites of linoleic acid (LA, 18:2n-6), which is an EFA found in vegetable oils. GLA is an important essential fatty acid that is required by human and animals to function normally. Recently, studies have indicated that GLA may be an essential component of the cell membrane, as well as an active component of dietary supplements and medicine. GLA must beadministered through the diet because it is converted into DHGLA in the body quickly and completely. DHGLA is a key material involved in the metabolism of LA. GLA is biosysthesized by the rate limiting step of ${\Deltac}^6$-desaturase, which is an enzyme that desaturates LA, there by allowing it to be converted into DHGLA via chain elongation. In addition, DHGLA exerts bioactive effects via action as a precursor of eicosanoid series 1. Breast milk contains an abundant amount of GLA; however, GLA is also available directly in evening primrose oil, black currant seed oil, borage oil and hemp seed oil. In addition, GLA enriched animal and plant can be produced using biotechnology, and highly pure GLA can be extracted using supercritical fluids, such as supercritical carbon dioxide, which will allow economically feasible production of GLA for use in medicines.

An Efficient Plant Regeneration and Transformation System of Robinia pseudoacacia var. umbraculifera for Phytoremediation

  • Kwon, Hye-Jin;Woo, Seong-Min;Seul, Eun-Jun;Kim, Teh-Ryung;Shin, Dong-Un;Kim, Hag-Hyun
    • Journal of Plant Biotechnology
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    • v.34 no.4
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    • pp.293-298
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    • 2007
  • Robinia pseudoacacia var. umbraculifera, commonly called umbrella black locust were regenerated after co-cultivation of internode segments with Agrobacterium tumefaciens which included yeast cadmium factor 1 (YCF 1) gene. The tolerance to cadmium and lead for plants can be increased by the YCF1 gene expression. Moreover, the recent studies have shown that YCF1 gene transgenic plants increase the accumulation of cadmium and lead into plant vacuoles. The effect of plant growth regulator such as 2,4-dichlorophenoxyacetic acid (2,4-D), ${\alpha}$-naphthaleneacetic acid (NAA), 6-benzyladenine (BA), and thidiazuron (TDZ) were studied to evaluate the propagation of plants through internode explants. The efficient induction of multiple adventitious shoots and callus were observed on a medium supplemented with 0.1 mg/L TDZ + 0.2 mg/L BA. To induce shoot elongation and rooting, regenerated shoots were transferred into basal MS medium without any plant growth regulator. Successful Agrobacterium tumefaciens mediated transformation was obtained by 20 min vacuum-infiltration with $50{\mu}M$ acetosyringone on the optimal multiple shoot induction medium with 30 mg/L hygromycin and 300 mg/L cefotaxime. To confirm the integration and expression of transgene, Polymerase Chain Reaction (PCR) and Reverse Transcriptase PCR (RT-PCR) were performed with specific primers. The frequency of transformation was approximately 18.94%. This study can be used to genetic engineering of phytoremediator.

A Study on Ethnic look Expressed in Modern Fashion (현대 패션에 나타난 민속풍(Ethnic look)에 관한 연구)

  • 정연자
    • Journal of the Korean Home Economics Association
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    • v.31 no.4
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    • pp.215-229
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    • 1993
  • As a result of making an inquiry into the ethnic look of each region appearing in present-day fashion by Asia. America and Oceania. Africa and Europe as mentioned above, its characteristics could be summarized as follows: Firstly the Asian ethnic look consists of Indian, Chinese and Japanese looks as mainstream. In terms of form, the draped form constituted its mainstream, and both the draped form and the tunic form are appearing Simultaneously in the Chinese look. And in respect to color the Indian look is using luxurious primary colors red, blue, yellow and green and other regions are making overall use of natural colors. With respect to ornament various kinds of ornaments is utilized in Indian's Sari and turban. Chines's Coolie hat, straw hat and embroidery, knotted button, and bead ornament, and Japan's Obi and Obijime, etc. Secondly in America and Oceania, costurme representing the Indian look in North America and the picture of Western pioneer, and the Peruvian, Mexican and chilean ethnic looks in South America were expressing much. Here, the form consistied a draped form as its main strem, such colors as yellow, purple, grey, etc were much utilized, and the material of costume comprised knits, cotton and the like. And the ornament consisted of hats, tassel ornaments, bead ornaments, metal chain belt, long braided hair, etc. Thirdly, the African ethnic look had an exposing form and a draped form, and such colors as black, white, yellow, brown, etc were used as the fashion color. Ornaments such as precious stone, bead ornaments, animal bones, straw metal ornament, etc were used as fashion decorations. Fourthly, Russia's Cossack look, Bulgaria's Bavshika look, spain's ethnic look cane to the fore as the European look Both the draped form and the tunic form were used simultaneously as fashion form. And grey, brown, purple, etc were much used as fashion color in the European look. Such ornaments as Cossack. Bavshka, boots, tassel ornaments were much used and paisley pattern also was used.

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Effects of temperature on Hardness and Stiffness of NR and SBR Vulcanizates (NR과 SBR 가황물의 경도와 강성도 대한 온도의 영향)

  • Jin, Hyun-Ho;Hong, Chong-Kook;Cho, Dong-Lyun;Kaang, Shin-Young
    • Elastomers and Composites
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    • v.42 no.3
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    • pp.143-150
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    • 2007
  • Hardness of rubbery materials, which is important for dimensional stability and product performance, was investigated upon temperature change in this study. A newly developed IRHD (International Rubber Hardness Degree) tester was used to measure the hardness changes of NR and SBR specimens at various temperatures and the hardness values were compared with the Young's modulus. The harness and Young's modulus of NR and SBR showed an abrupt change near the glass transition temperatures. The hardness and Young's modulus were increased by increasing temperature due to the increased random chain conformation of molecules. The effect of temperature on hardness and Young's modulus of NR and SBR specimens filled with carbon black and silica was decreased by increasing filler content.

Seasonal Prevalence of Mosquitoes Collected from Light Traps in Gyeongsangnam Province, Republic of Korea (2013-2014)

  • KIM, Dong-Min;NOH, Byung-Eon;HEO, Jeonghoon;LEE, Wook-Gyo;YANG, Sung-Chan;LEE, Dong-Kyu
    • Entomological Research
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    • v.48 no.5
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    • pp.439-447
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    • 2018
  • Adult mosquito surveillance was conducted from 2013 through 2014 at four cattle sheds, a wild bird refuge, and two residential areas located in Gyeongnam Province in the Republic of Korea. Adult mosquitoes were collected in black light traps from April 1, through November 30. Mosquito surveillance was conducted to figure out population densities of vector mosquitoes, possibly invaded mosquitoes and identify various virus infections at the selected sites. A total of 107,466 females comprising 14 species and 7 genera were collected from 2013 to 2014. The most common species collected were Culex tritaeniorhynchus Giles (63.8%), Anopheles sinensis s.l. (18.9%), Aedes vexans nipponii (Theobald) (7.7%), and Culex pipiens Coquillett (5.1%). Trap indices (TIs) varied widely for species over their range, due to geographical distribution and degree of association with rural and urban communities. The most collected An. sinensiss.l. and Cx. tritaeniorhynchus appeared at a cow shed in Hapcheon (TI 347.5) and a pigsty in Daejeo-1-dong, Busan (TI 1,040.8), respectively, due in part to their situation near breeding sites such as rice paddies. The bi-weekly population densities for mosquito species were variable for each of the years, apparently as a result of variable annual weather conditions. None of the mosquito species collected tested for the flavivirus including Japanese Encephalitis Virus, West Nile Virus, Dengue Virus, and Zika Virus infections by polymerase chain reaction (PCR) assay were positive.

A Study on the Quantitative Evaluation of Initial Coin Offering (ICO) Using Unstructured Data (비정형 데이터를 이용한 ICO(Initial Coin Offering) 정량적 평가 방법에 대한 연구)

  • Lee, Han Sol;Ahn, Sangho;Kang, Juyoung
    • Smart Media Journal
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    • v.11 no.5
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    • pp.63-74
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    • 2022
  • Initial public offering (IPO) has a legal framework for investor protection, and because there are various quantitative evaluation factors, objective analysis is possible, and various studies have been conducted. In addition, crowdfunding also has several devices to prevent indiscriminate funding as the legal system for investor protection. On the other hand, the blockchain-based cryptocurrency white paper (ICO), which has recently been in the spotlight, has ambiguous legal means and standards to protect investors and lacks quantitative evaluation methods to evaluate ICOs objectively. Therefore, this study collects online-published ICO white papers to detect fraud in ICOs, performs ICO fraud predictions based on BERT, a text embedding technique, and compares them with existing Random Forest machine learning techniques, and shows the possibility on fraud detection. Finally, this study is expected to contribute to the study of ICO fraud detection based on quantitative methods by presenting the possibility of using a quantitative approach using unstructured data to identify frauds in ICOs.

Messianism in Civilizational History: The Transformation of the Buddhist Messiah via Maitreya

  • DINH Hong Hai
    • Journal of Daesoon Thought and the Religions of East Asia
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    • v.3 no.2
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    • pp.71-92
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    • 2024
  • The world we live in is becoming more convenient thanks to the inventions of science and technology. Still, the world is also becoming more and more unpredictable with the current situation of VUCA (Volatility, Uncertainty, Complexity, Ambiguity). The Covid-19 pandemic brought the biggest global disaster ever with 774,631,444 infected people and 7,031,216 deaths (WHO on February 11, 2024) but it seems that humanity is gradually forgetting this disaster. Meanwhile the economic stimulus packages worth trillions of dollars from governments after the pandemic have further caused the world debt bubble to swell. The bubble burst scenario is something that many economic experts fear. Apparently, in the transitional period of the early decades of the 21st century, the world's economic, cultural, political, social, natural, and environmental aspects have undergone profound transformations: from the real estate and finance crises in the United States since 2008; through the melting of the Arctic ice over the past several decades; to the double disaster of the earthquake and tsunami in Japan in 2011. Especially, in the context of the world economic crisis after the COVID-19 pandemic, the human achievements of the past thousands of years are in jeopardy of being wiped out in an instant. Many people are predicting a bad scenario for a chain collapse. Facing the signals of an imminent economic catastrophe based on the appearance of "the Gray Rhino, Black Swan and White Elephant," many drawn in by Eschatological thought declare that Doomsday will occur shortly. This is the time for many other people to hope for the incoming Messiah. The Messiah is said to appear when people feel despair or suffer a great disaster because faith in the Savior can help them overcome adversity mentally. This research will find out how adherents of Buddhism view and deal with civilizational crises by examining history via symbols associated with Maitreya as based upon the Buddhist Messiah, Maitreya.

Association Analysis of the 6-bp Deletion Variant of the MYH3 Gene with Meat Color Traits in Crossbred (Landrace × Jeju Native Black Pig) Pigs (제주재래흑돼지와 랜드레이스 교배 축군에서 MYH3 유전자의 6-bp 결실 변이와 육색 형질간의 연관성 분석)

  • Kang, Yong-Jun;Kim, Sang-Geum;Kim, Su-Yeon;Kim, Min-Ji;Kim, Hyeon-Ah;Shin, Moon-Cheol;Yoo, Ji-Hyun;Yang, Byoung-Chul;Cho, In-Cheol
    • Journal of Life Science
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    • v.31 no.7
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    • pp.626-630
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    • 2021
  • This study was conducted to examine the association between the myosin heavy chain 3 (MYH3) in 6-bp deletion variant genotypes and meat color traits in a crossbred pig population Landrace and Jeju native black pigs (JNBP). The longissimus dorsi, semimembranosus, triceps brachii and biceps femoris muscle from each carcass were used for the analysis of meat color traits. A total of 187 pigs and three meat color traits, CIE L* (lightness), CIE a* (redness), and CIE b* (yellowness), were analyzed. All experimental pigs were successfully genotyped for the MYH3 6-bp deletion variant using Polymerase chain reaction (PCR) analysis. We detected three MYH3 6-bp deletion variant genotypes qq, Qq, and QQ with 0.091, 0.551 and 0.358 genotype frequencies, respectively. Compared to qq homozygotes, the MYH3 6-bp deletion QQ genotype animals showed a higher levels of the meat colors traits CIE L* (lightness), CIE a* (redness), and CIE b* (yellowness) in longissimus dorsi (p>0.05, p<0.001, p<0.001), semimembranosus (p>0.05, p<0.001, p<0.001), triceps brachii (p<0.001, p<0.001, p<0.001), and biceps femoris (p<0.01, p<0.001, p<0.001), respectively. The QQ genotype pigs was associated with increasing meat color traits in the crossbred between Landrace and JNBP. Our findings suggest that the MYH3 6-bp deletion variant genotypes can be used as valuable genetic markers for JNBP-related breeding programs to improve meat quality and control meat color traits.

Starch Structure and Physicochemical Properties of Colored Rice Varieties (유색미 품종별 전분 구조 및 이화학적 특성)

  • Park, Ji-Young;Oh, Sung-Hwan;Han, Sang-Ik;Lee, Yu-Young;Lee, Byung-Won;Ham, Hyeonmi;Choi, Yong Hwan;Oh, Sea-Kwan;Cho, Jun Hyeon;Song, You Chun
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.61 no.3
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    • pp.153-162
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    • 2016
  • We investigated the physicochemical properties and starch structure of various rice varieties including 15 colored cultivars. NKHC showed the highest level of protein, lipid, and total dietary fiber levels. Reddish brown rice showed higher lipid content than that in black rice cultivars. Apparent amylose content of waxy and non-waxy colored rice varieties was within the range of 3~5% and 15~18%, respectively. IP exhibited the highest total starch (TS) content, whereas, NKHC and HJJ showed lower TS content than that in other cultivars. Pasting temperature of all colored rice cultivars, except IP, was about $68^{\circ}C$. Peak viscosity of IP, JJJ, Hong, and GGHM showed high values of 138, 130, 128, and 124, respectively. All the colored rice cultivars presented A-type X-ray diffraction pattern and polygonal shapes of starch granules were observed using scanning electron micrographs (SEM). Major groups of amylopectin chain lengths were B (12 < DP ${\leq}$ 24) and A (DP ${\leq}$ 12). SMHC showed the highest B chain content and the lowest A chain content (P < 0.05). These experimental results provided useful information for scientists and the food industry regarding colored rice starches.

Correlation between Heart-type Fatty Acid-binding Protein Gene Polymorphism and mRNA Expression with Intramuscular Fat in Baicheng-oil Chicken

  • Wang, Yong;He, Jianzhong;Yang, Wenxuan;Muhantay, Gemenggul;Chen, Ying;Xing, Jinming;Liu, Jianzhu
    • Asian-Australasian Journal of Animal Sciences
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    • v.28 no.10
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    • pp.1380-1387
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    • 2015
  • This study aims to determine the polymorphism and mRNA expression pattern of the heart-type fatty acid-binding protein (H-FABP) gene and their association with intramuscular fat (IMF) content in the breast and leg muscles of Baicheng oil chicken (BOC). A total of 720 chickens, including 240 black Baicheng oil chicken (BBOC), 240 silky Baicheng oil chicken (SBOC), and 240 white Baicheng oil chicken (WBOC) were raised. Three genotypes of H-FABP gene second extron following AA, AB, and BB were detected by polymerase chain reaction-single strand conformation polymorphism (PCR-SSCP) strategy. The G939A site created AA genotype and G956A site created BB genotype. The content of IMF in AA genotype in breast muscle of BBOC was significantly higher than that of AB (p = 0.0176) and the genotype in leg muscle of WBOC was significantly higher than that of AB (p = 0.0145). The G939A site could be taken as genetic marker for higher IMF content selecting for breast muscle of BBOC and leg muscle of WBOC. The relative mRNA expression of H-FABP was measured by real-time PCR at 30, 60, 90, and 120 d. The IMF content significantly increased with age in both muscles. The mRNA expression level of H-FABP significantly decreased with age in both muscles of the three types of chickens. Moreover, a significant negative correlation between H-FABP abundance and IMF content in the leg muscles of WBOC (p = 0.035) was observed. The mRNA expression of H-FABP negatively correlated with the IMF content in both breast and leg muscles of BOC sat slaughter time.