• 제목/요약/키워드: transformation and development

검색결과 1,579건 처리시간 0.033초

Development of Non-protoplast transformation System in Aspergillus oryzae

  • Lee Jae Won;Hahm Young Tae
    • 한국미생물학회:학술대회논문집
    • /
    • 한국미생물학회 2000년도 추계학술발표대회
    • /
    • pp.85-91
    • /
    • 2000
  • Aspergillus oryzae is a filamentous fungus classified in the group Aspergillaceae Ascomycetes. It is an important microorganism for industrial production of enzymes and fermented food productions. It secrets large quantities of proteins or enzymes into the culture medium which makes this organism appealing for the production of heterologous proteins. Recently Electric field-mediated transformation method, electroporation, has been applied to fungal transformation. In this study, fungal transformation was carried out by bypassing the protoplast isolation step, decreasing the culturing time and non-protoplast transformation for the increment of transformation efficiency. Transformants were obtained with electroporation in optimal condition 2,500 voltage, 1,540 ohm and 0.50 capacitance. More than 1,000 transform ants were obtained with 6-10 hrs cultured mycelia without enzyme treatment, called non-protoplast transformation.

  • PDF

발아종자의 분열조직을 이용한 효율적인 콩 형질전환 방법 (Efficient Transformation Method of Soybean Using Meristematic Tissues of Germinating Seeds)

  • 김율호;박향미;최만수;손수인;신동범;이장용
    • 한국육종학회지
    • /
    • 제40권3호
    • /
    • pp.278-285
    • /
    • 2008
  • ${\bullet}$ 국내 품종에 적합한 콩 형질전환 방법을 확립하기 위해 배축 절단 방법을 새롭게 개발하였으며 이 방법을 통해 목적 유전자가 콩 분열조직에 안정적으로 도입되고 선발 과정을 거쳐 형질전환 식물체를 작성할 수 있었다. ${\bullet}$ 콩 형질전환체의 도입유전자 copy 수는 1~2개이고 세대 진전에 따라 도입유전자가 안정적으로 유전되고 있음을 확인하였다. ${\bullet}$ 이러한 결과를 바탕으로 배축 절단 방법을 사용하여 우리나라 환경에 적합한 우수한 형질전환 콩 품종을 신속하게 개발할 수 있을 것으로 기대된다.

Current status on applications of conventional breeding techniques and biotechnological system in ornamentals

  • Kim, Jong Bo
    • Journal of Plant Biotechnology
    • /
    • 제47권2호
    • /
    • pp.107-117
    • /
    • 2020
  • Flower industry is now growing due to the development of economy in many countries. Simultaneously, needs from consumers in flower market are varied widely. To satisfy the needs from consumers and deal with a variety of diseases from a lots of pathogens as well as climate change, new elite flower cultivars should be released in flower market. For this purpose, conventional and biotechnological techniques can be employed to make good cultivar. Therefore, this review describes the general overview of flower breeding techniques including cross-hybridization, mutation breeding and genetic transformation systems. Also, breeding systems for ornamentals derived from plant tissue culture such as embryo culture, in vitro fertilization, ovary/ovule culture and haploid production were reviewed. Furthermore, in this study recent development of the generation of new flower cultivars using marker-assisted breeding, plant transformation including particle bombardment and Agrobacterium tumefaciens as well as genome-editing technology were described. This review will be contributed to the development and releasement of new flower cultivars with horticulturally useful traits in the future.

Research on the transformation of smart museums under the Internet thinking: A case study on the palace museum

  • Peng, JingYi;Jin, XueHua
    • International Journal of Advanced Culture Technology
    • /
    • 제10권3호
    • /
    • pp.377-392
    • /
    • 2022
  • With the development of information and Internet technology, traditional museums have been long followed the trend of integrating innovative technological elements into the changed museums. It is necessary that the museums seize the opportunity of the trend transforming into smart museums, the key is to grasp the characteristics and laws of the Internet era, and use Internet thinking to explore the future development path. However, there are few studies on Internet thinking among the existing results. On the other hand, most of the relevant actual case studies still focus on the micro-level, which has obvious limitations. This paper will start from the current situation and trend, focus on the Palace Museum as a case study object, and discuss the problems and characteristics, so as to put forward the thinking about the development of smart museums in four aspects to explore the optimal path of transformation for smart museums.

전쟁패러다임의 전환과 군사변혁 (Shift in Warfare Paradigm and Military Transformation)

  • 정춘일
    • 안보군사학연구
    • /
    • 통권4호
    • /
    • pp.381-418
    • /
    • 2006
  • In present, advanced countries in the world are seen concentring on Military Transformation to create new military capability as there is a shift in Warfare Paradigm. Rapid development of technology enables military system, operational concept and organization innovated. As a result, Revolution in Military Affairs(RMA) that dramatically increased warfighting capability is pursued. Especially, advanced information technology constructs system of systems with abilities of battle visualization, information sharing in battlefield, long-range strike capability that are interoperable and combined. Corresponding to this, engagement methods and organizations are being progressively developed. The purpose of this thesis is overview of newly developing Warfare Paradigm and analysis of tendency of Military Transformation that advanced countries are pursuing preparation to this. Above all, specific aspects and contents of the Warfare Paradigm which emerged by information age were summarized. Subsequently, Military Transformation which provides the basic concepts and principles to the advanced countries in the world for the creation of new military capability was discussed. In conclusion, the tendency of Military Transformation by U.S.A, Japan, China, and Russia surround the Korean peninsular as the major power in military was carefully observed.

  • PDF

형태변형 원리를 적용한 현대 패션디자인의 조형적 특징 및 의미 연구 (A Study of the Formative Characteristics and Meanings in Fashion Design Applying The Principles of Shape-Transformation)

  • 권기영
    • 대한가정학회지
    • /
    • 제44권12호
    • /
    • pp.167-178
    • /
    • 2006
  • The purpose of this study is to analyze the transformed fashion design based on the principles of visual design. Wucius Wong classified the kinds of transformation techniques as internal variation, external variation, extension, superimposition, transfiguration, dislocation, and distortion, which create and modify the shape. And the kinds of shape grammar for transformation are rule deletion, rule addition, and rule transformation, which are applied to interpretate for the change of wearing, the specialization & development of clothes, and the avant-garde styles in subculture groups. The formative meanings of the transformed fashion design are multi-transformation with complexity, formal beauty pretending confusion, and the basis for new trend.

0.15%C-6%Mn강의 잔류오스테나이트 생성에 미치는 역변태 열처리의 영향 (Effect of Reverse Transformation Treatment on the Formation of Retained Austenite in 01.5%C-6%Mn Steels)

  • 홍호;이오연;이규복
    • 열처리공학회지
    • /
    • 제11권1호
    • /
    • pp.35-45
    • /
    • 1998
  • The effects of alloying elements and the conditions of reverse transformation studied treatment on the formation of retained austenite in 0.15C-6%Mn-(Ti, Nb) steels has been studied. The addition of Ti and Nb to 0.15C-6%Mn steel shows no effect on the formation of retained austenite. In case of reverse transformation treatment at various temperatures, the shape of retained austenite was lath type, growing toward the longitudinal and thickness direction with increasing the heat treatment temperatures. The retained austenite formed by the reverse transformation treatment at higher temperature has a lot of stacking faults induced by the internal stress. The retained austenite was stabilized chemically by enrichment of C and Mn in the vicinity of a untransformed austenite and the chemical stability of retained austenite was decreased with increasing the heat treatment temperature and the holding time. It was effective to heat treat at $650^{\circ}C$ in order to obtain over 30vol.% of retained austenite, but more desirable to heat treat at $625^{\circ}C$ for a long time, considering the amount and quality of retained austenite.

  • PDF

Microbial Transformation of Isoxanthohumol, a Hop Prenylflavonoid

  • Kim, Hyun-Jung;Kang, Min-Ah;Lee, Ik-Soo
    • Natural Product Sciences
    • /
    • 제14권4호
    • /
    • pp.269-273
    • /
    • 2008
  • Microbial transformation of isoxanthohumol (1), a prenylated flavanone from hops, has resulted in the production of a pair of glucosylated derivatives. The structures of these compounds were elucidated to be (2S)-5-methoxy-8-prenylnaringenin 7-O-${\beta}$-D-glucopyranoside (2) and (2R)-5-methoxy-8-prenylnaringenin 7-O-${\beta}$-Dglucopyranoside (3) based on the spectroscopic analyses.

A Study on Agile Transformation in the New Digital Age

  • Lee, Jee Young
    • International Journal of Advanced Culture Technology
    • /
    • 제8권1호
    • /
    • pp.82-88
    • /
    • 2020
  • In the face of recent digital and digital transformation, companies and industries are trying to be agile to adapt and respond to change. Agile paradigm is spreading beyond the boundaries of existing applications such as IT-related projects and software development. In this regard, this study, we analyzed the diffusion of agile paradigm by text mining abstracts of research papers from 2001 to 2019. In addition, we discussed agile transformation in the Fourth Industrial Revolution. Through this study, we confirmed that we are studying agile transformation in various fields such as business environment, corporate organizational culture, manufacturing industry, and supply chain. The results of this study will contribute to understanding the meaning and role of agile as a basic paradigm for digital transformation in the Fourth Industrial Revolution.

가공열처리한 Fe-30%Ni-0.35%C합금의 역변태거동 (Reverse Transformation Behavior in Thermomechanically Processed Fe-30%Ni-0.35%C Alloy)

  • 안행근;유정희;김학신
    • 열처리공학회지
    • /
    • 제12권4호
    • /
    • pp.313-319
    • /
    • 1999
  • The reverse transformation behavior was investigated by DSC analysis in thermomechanically processed Fe-30%Ni-0.35%C alloy. Upon increasing the heating rate from $5^{\circ}C/min$ to $80^{\circ}C/min$, the As point of the ausformed martensite was not changed and the As point of the marformed martensite decreased at reverse transformation. The Af points showed to be constant with increasing the heating rate both in the ausformed martensite and in the marformed martensite. With increasing the deformation degree, the As points of the ausformed martensite and the marformed martensite increased and the Af points appeared to be constant, structures. The enthalpy changes increased with increasing the heating rate, but decreased with increasing the deformation degree in both structures.

  • PDF