• Title/Summary/Keyword: Alternative host

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Study on the Hatching Characteristics and Diet of the Stick Insect, Baculum elongatum (Phasmida: Phasmatidae) for Artificial Mass Rearing

  • Lee, Jin Gu;Kim, Hee Dong;Kang, Chang Sung;Seo, Ae Gyeong;Lee, Sang Hyun;Park, Young Kyu;Lee, Young Bo
    • International Journal of Industrial Entomology and Biomaterials
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    • v.26 no.1
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    • pp.61-66
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    • 2013
  • Baculum elongatum has several peculiarities such as parthenogenesis, unique external features, changing body color, and dropping oviposition, which makes it a potential economically useful insect. Oviposition was performed by females without fertilization by the sperm of males. The oviposition period was $42.2{\pm}22.7$ days and the number of eggs per female was $109.5{\pm}70.5$ eggs. The hatch rate was 73.3% at $25^{\circ}C$ and 66.7% after low temperature treatment ($8^{\circ}C$ for 60 days). In nature, B. elongatum overwinters as an egg, but it can be assumed from the results that cold temperatures were not required for hatching. The hatch rate was 98.2% in the treatment using floral foam, fermented sawdust, and leaves. The developmental period was $100.9{\pm}4.2$ days for eggs, $55.3{\pm}4.6$ days for nymphs, and $49.7{\pm}16.0$ days for adults. The length of the eggs was $0.33{\pm}0.0$ cm and the lengths of the nymphs were clearly distinguishable according to the instar stage. Clover(Trifolium repens) was an excellent diet as it was similar to the host plant and could be used as an alternative diet. The rate of reaching adulthood for the insects was 66.7% on an artificial diet containing 25% acacia leaves. For sustainable mass rearing of nymphs or adults of B. elongatum, a natural diet could be used such as acacia (Robinia pseudoacacia), white oak (Quercus aliena), chestnut (Castanea crenata var. dulcis), and bush clover (Lespedeza bicolor), or an alternative diet such as clover or artificial diet.

Suitability of Alternative Dispute Resolution for the Fashion Industry - Focused on Arbitration for the Fashion Industry - (패션산업의 대체적 분쟁해결제도 적합성 - 패션산업의 중재 제도 도입을 중심으로 -)

  • Lee, Jae-Kyoung
    • Journal of Arbitration Studies
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    • v.25 no.1
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    • pp.87-105
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    • 2015
  • Intellectual property law is slowly fighting to keep pace with the rapid growth of the fashion industry. Copyright and patent law have proven only minimally effective in fashion, even in the US and other top fashion nations, forcing designers and fashion companies to rely on their trademarks to protect their work. Litigating trademark disputes in the fashion industry presents a host of problems as witnessed in a recent Christian Louboutin case, leading the parties to resort to Alternative Dispute Resolution(ADR) and Online Dispute Resolution(ODR). ADR methods, especially arbitration, are increasingly emerging as substitutes to litigation. Using these methods, the fashion industry (CFDA in the US case) should sincerely consider a self-regulating program in which its members, both fashion designers and corporations alike, can resolve disputes in a manner mutually beneficial to all parties in order to preserve the industry's growth, solidarity, and esteem In particular, for the US fashion industry, the ongoing Innovative Design Protection and Privacy Prevention Act(IDPPPA) anti-counterfeit legislation could have caused a chilling effect against innovation. New designers with no name and less resources who could normally flourish producing inspired-by designs may find themselves subject to copyright infringement legislation since the IDPPPA may expand the protection of established designers and brands with more resources. This fear and its implication could be solved by the fashion industry itself since fashion experts know best how to handle these fast-paced issues arising in the field. Therefore, stakeholders in the fashion industry should commit to protecting innovation within fashion on a long-term basis by establishing a panel handling an ADR process. This can mitigate the uncertainty created by the IDPPPA or any other legislation from elsewhere, which could result in a shying away from experimentation with inspired-by designs.

Molecular Analysis of Alternative Transcripts of CCDC94 Gene in the Brain Tissues of Rhesus Monkey (붉은 털 원숭이의 뇌조직에서 CCDC94 유전자 대체 전사체의 분자적 분석)

  • Yun, Se-Eun;Ahn, Kung;Kim, Heui-Soo
    • Journal of Life Science
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    • v.21 no.3
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    • pp.459-463
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    • 2011
  • The genome of the rhesus monkey has diverged as an average sequence identity of ~93%. The rhesus monkey has been widely used as a non-human primate in the field of biomedical and evolutional research. Insertion of transposable elements (TEs) induced several events such as transcriptional diversity and different expression in host genes. In this study, 112 transcripts were identified from a full-length cDNA library of brain tissues of the rhesus monkey. One transcript (R54) showed a different expression pattern between human and rhesus monkey tissues. This phenomenon can be an explanation that R54 transcript was acquired by splicing a donor site derived from exonization of the L2A element. Therefore, integration of TEs during primate radiation could contribute to transcriptional diversity and gene regulation.

A Study on the Support of Intermediate Node Mobility by Double Paths in CCN Real-Time Services (CCN 실시간 서비스 간 이중 경로에 의한 중간노드 이동성 지원에 관한 연구)

  • Keum, Suk-Ju;Kwon, Tae-Wook
    • The Journal of the Korea institute of electronic communication sciences
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    • v.16 no.5
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    • pp.825-834
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    • 2021
  • With the development of various devices and Internet platforms, production and demand for content are increasing rapidly. However, effective response to exponentially increasing data usage is difficult in current TCP/IP schemes. As a result, with the emergence of an alternative called CCN, data can be transmitted and received from the host-centered to the content-oriented, and large-capacity content can be handled with more mitigated network resources. In this paper, we will address intermediate node mobility, which is one of the areas studied in CCN. In CCN, real-time services are a very important factor for information providers as well as requestors. However, when a node departure situation occurs, packet transmission and transmission speed decreases. Therefore, to ensure these numbers, even if the intermediate node deviates using a dual path, it provides a complete QoS (Quality of Service) using an alternative path.

Aplastic anemia (재생불량빈혈(Aplastic anemia))

  • Kim, Hack Ki
    • Clinical and Experimental Pediatrics
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    • v.50 no.6
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    • pp.519-523
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    • 2007
  • Aplastic anemia is a rare disease, which is characterized by pancytopenia and hypocellular bone marrow without infiltration of abnormal cells or fibrosis. The incidence in Asia is higher than in the West and new cases are diagnosed at a rate of 5.1 per million pediatric populations per year in Korea. The pathophysiology is understood roughly by defective hematopoiesis, impaired bone marrow micro-environment and immune mechanism. Treatments are performed on basis of pathogenesis and selected depending on the severity. Immunosuppressive therapy with antilymphocyte or antithymocyte globulin and cyclosporine is effective in the majority of patients but has some problems including relapse or clonal evolution. Recently, there have been clinical trials of immunosuppression with hematopoietic growth factors or other drugs. Allogeneic hematopoietic stem cell transplantation (HSCT) is curative in children with severe aplastic anemia. The overall survival in HSCT from HLA-identical sibling is higher than alternative donor, including HLA matched unrelated donor or cord blood. We have to consider quality of life after HSCT because of high survival rate. However, chronic graft versus host disease and graft failure are important factors that affect the quality of life and overall survival. We need further investigation to make new regimens aimed at overcoming these risk factors and perform clinical trials.

Simulation and Modeling of Polyethylene/Clay Nanocomposite for Dielectric Application

  • Zazoum, Bouchaib;David, Eric;Ngo, Anh Dung
    • Transactions on Electrical and Electronic Materials
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    • v.15 no.4
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    • pp.175-181
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    • 2014
  • In this paper, the simulation and modeling of a polyethylene/clay nanocomposite were undertaken to predict the nanocomposite's dielectric behavior and to help design a nanocomposite material with optimum electrical properties for electrotechnical or electronic applications. A 3-D simulation model using the finite elements method was employed in order to study the effective permittivity and electric field distribution of two-phase nanocomposite materials for ordered and random distributions of inclusions in a low-loss host matrix such as polyethylene. The influence of the dispersion of reinforcing particles, and of the permittivity and radius of the inclusions, was analysed. The simulation results were compared with alternative, known theoretical solutions obtained from classical models, and were found to be in good agreement. The numerical results also indicate that for fixed volume fractions of nanoparticles the effective permittivity of the mixture, for ordered and random distributions, does not vary with the degree of dispersion. The variation of the effective permittivity with the particle radius is shown, using numerical data, to agree with the analytical modules.

Case study of HBV-related Disasters in a High-risk Family

  • Lee Gi Jun;Cho Jung Hyo;Cho Chong Kwan;Son Chang Gue
    • The Journal of Korean Medicine
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    • v.26 no.4
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    • pp.168-173
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    • 2005
  • Hepatitis B virus (HBV) is one of the most common intracellular parasites, of which 350 million people worldwide are chronic carriers. It also related to a high incidence of hepatocellular carcinoma. In general, it has been well known that HBV is a noncytolytic virus, so not the virus itself but any unfavorable response by host immune cells and inflammatory cytokines mainly result in chronic liver injury. From this viewpoint, we hopefully assume that Oriental therapies based on immunologic strategies may be able to provide a therapeutic alternative for caring for these illnesses. We also need to be thoroughly familiar with information about HBV epidemiology and the pathologic process of chronic HBV carriers. In this study, to clarify the important considerations of HBV infection and the high risk of HBV induced life-threatening diseases, we introduced our pilot practices given to the patients and the possibility of Oriental therapies as a novel strategy for chronic HBV carriers.

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How Z-DNA/RNA binding proteins shape homeostasis, inflammation, and immunity

  • Kim, Chun
    • BMB Reports
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    • v.53 no.9
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    • pp.453-457
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    • 2020
  • The right-handed double-helical structure of DNA (B-DNA), which follows the Watson-Crick model, is the canonical form of DNA existing in normal physiological settings. Even though an alternative left-handed structure of DNA (Z-DNA) was discovered in the late 1970s, Z-form nucleic acid has not received much attention from biologists, because it is extremely unstable under physiological conditions, has an ill-defined mechanism of its formation, and has obscure biological functions. The debate about the physiological relevance of Z-DNA was settled only after a class of proteins was found to potentially recognize the Z-form architecture of DNA. Interestingly, these Z-DNA binding proteins can bind not only the left-handed form of DNA but also the equivalent structure of RNA (Z-RNA). The Z-DNA/RNA binding proteins present from viruses to humans function as important regulators of biological processes. In particular, the proteins ADAR1 and ZBP1 are currently being extensively re-evaluated in the field to understand potential roles of the noncanonical Z-conformation of nucleic acids in host immune responses and human disease. Despite a growing body of evidence supporting the biological importance of Z-DNA/RNA, there remain many unanswered principal questions, such as when Z-form nucleic acids arise and how they signal to downstream pathways. Understanding Z-DNA/RNA and the sensors in different pathophysiological conditions will widen our view on the regulation of immune responses and open a new door of opportunity to develop novel types of immunomodulatory therapeutic possibilities.

Gene Therapy Vectors: A Current Research Insight (유전자치료를 위한 벡터 개발의 연구 동향)

  • Son, Eun-Hwa;Sohn, Eun-Soo;Pyo, Suhk-Neung
    • Journal of Pharmaceutical Investigation
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    • v.34 no.5
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    • pp.351-362
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    • 2004
  • The basic concept underlying gene therapy is that human diseases may be treated by the transfer of genetics material into specific cells of a patient in order to correct or supplement defective genes responsible for disease development. There are several systems that can be used to transfer foreign genetic material into the human body. Both viral and non-viral vectors are developed and evaluated for delivering therapeutic genes. Viral vectors are biological systems derived from naturally evolved viruses capable of transferring their genetics materials into host cells. However, the limitations associated with viral vectors, in terms of their safety, particularly immunogenecity, and their limited capacity of transgenic materials, have encouraged researchers to increasingly focus on non-viral vectors as an alternative to viral vectors. Although non-viral vectors are less efficient than viral ones, they have the advantages of safety, simplicity of preparation and high gene encapsulation capability. This article reviews the most recent studies highlighting the advantages and the limitation of gene delivery systems focused on non-viral systems compared to viral systems.

Antimicrobial Peptides (AMPs): Peptide Structure and Mode of Action

  • Park, Yoon-Kyung;Hahm, Kyung-Soo
    • BMB Reports
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    • v.38 no.5
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    • pp.507-516
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    • 2005
  • Antimicrobial peptides (AMPs) have been isolated and characterized from tissues and organisms representing virtually every kingdom and phylum. Their amino acid composition, amphipathicity, cationic charge, and size allow them to attach to and insert into membrane bilayers to form pores by 'barrel-stave', 'carpet' or 'toroidal-pore' mechanisms. Although these models are helpful for defining mechanisms of AMP activity, their relevance to resolving how peptides damage and kill microorganisms still needs to be clarified. Moreover, many AMPs employ sophisticated and dynamic mechanisms of action to carry out their likely roles in antimicrobial host defense. Recently, it has been speculated that transmembrane pore formation is not the only mechanism of microbial killing by AMPs. In fact, several observations suggest that translocated AMPs can alter cytoplasmic membrane septum formation, reduce cell-wall, nucleic acid, and protein synthesis, and inhibit enzymatic activity. In this review, we present the structures of several AMPs as well as models of how AMPs induce pore formation. AMPs have received special attention as a possible alternative way to combat antibiotic-resistant bacterial strains. It may be possible to design synthetic AMPs with enhanced activity for microbial cells, especially those with antibiotic resistance, as well as synergistic effects with conventional antibiotic agents that lack cytotoxic or hemolytic activity.