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Phylogeny, Morphology and Pathogenicity of Biscogniauxia mediterranea Causing Charcoal Canker Disease on Quercus brantii in Southern Iran

  • Samaneh, Ahmadi;Fariba, Ghaderi;Habiballah, Charehgani;Soraya, Karami;Dariush, Safaee
    • Research in Plant Disease
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    • v.28 no.4
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    • pp.209-220
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    • 2022
  • Charcoal canker of oak, which has recently increased in southern Iran, could pose a serious threat to the entire forest ecosystem in the near future. In addition, it seems that climate change and its consequences, such as drought in the southern regions of Iran, have exacerbated this phenomenon. Consequently, the objective of this study was to identify the fungal pathogens that could cause charcoal canker disease in the oak forests of South Zagros. It was also sought to find associations between changes in the occurrence/exacerbation of charcoal canker disease under non and intense drought stress in non-inoculated or inoculated Quercus brantii seedlings. In total, 120 isolates were obtained from eight oak forests located in the Zagros Mountains of Southern Iran, Kohgiluyeh & Boyer-Ahmad and Fars provinces, which were classified as Biscogniauxia mediterranea based on morphological assessment. Subsequently, molecular assay confirmed the result by phylogenetic inference of internal transcribed spacer-rDNA regions, α-actin, and β-tubulin genes. The results of the pathogenicity test showed that the response of isolates of B. mediterranea (Iran-G1 and Iran-M70) was varied in different environments for the measured necrotic lesion length. In comparison with the control moisture treatments (non-stress), the necrotic lesion length in inoculated treatments increased under intense drought stress. In general, inoculated oak seedlings' exposure to water-deficient stress by the pathogen of B. mediterranea could affect the spread/severity of the charcoal canker disease.

Optimal Bayesian MCMC based fire brigade non-suppression probability model considering uncertainty of parameters

  • Kim, Sunghyun;Lee, Sungsu
    • Nuclear Engineering and Technology
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    • v.54 no.8
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    • pp.2941-2959
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    • 2022
  • The fire brigade non-suppression probability model is a major factor that should be considered in evaluating fire-induced risk through fire probabilistic risk assessment (PRA), and also uncertainty is a critical consideration in support of risk-informed performance-based (RIPB) fire protection decision-making. This study developed an optimal integrated probabilistic fire brigade non-suppression model considering uncertainty of parameters based on the Bayesian Markov Chain Monte Carlo (MCMC) approach on electrical fire which is one of the most risk significant contributors. The result shows that the log-normal probability model with a location parameter (µ) of 2.063 and a scale parameter (σ) of 1.879 is best fitting to the actual fire experience data. It gives optimal model adequacy performance with Bayesian information criterion (BIC) of -1601.766, residual sum of squares (RSS) of 2.51E-04, and mean squared error (MSE) of 2.08E-06. This optimal log-normal model shows the better performance of the model adequacy than the exponential probability model suggested in the current fire PRA methodology, with a decrease of 17.3% in BIC, 85.3% in RSS, and 85.3% in MSE. The outcomes of this study are expected to contribute to the improvement and securement of fire PRA realism in the support of decision-making for RIPB fire protection programs.

Introduction of Non-Native Ticks Collected from Fresh Migratory Bird Carcasses on a Stopover Island in the Republic of Korea

  • Choi, Chang-Yong;Kim, Heung-Chul;Klein, Terry A.;Nam, Hyun-Young;Bing, Gi-Chang
    • Parasites, Hosts and Diseases
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    • v.60 no.1
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    • pp.57-63
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    • 2022
  • When free-ranging birds are accidentally killed or die, there may be greater potential for their associated ticks to detach, seek alternate hosts, and become established. We examined 711 carcasses of 95 avian species for ticks at a stopover island of migratory birds in the Republic of Korea where only Ixodes nipponensis and I. persulcatus were previously reported from local mammals and vegetation. A total of 16 ticks, I. turdus and Haemaphysalis flava, were collected from 8 fresh carcasses belonging to 5 avian species. Despite their known abundance on migratory birds and mainland Korea, these species had not colonized the isolated insular ecosystem possibly due to the low abundance and diversity of local hosts. The results imply that increasing human impact, such as the anthropogenic mortality of migratory birds and the introduction of non-native mammalian hosts, will increase the potential invasion and colonization risk of ticks. This finding also suggests that tick surveillance consisting of fresh carcasses of dead migratory birds may provide additional information, often ignored in surveillance of ticks on live birds, for the potential introduction of non-native ticks and associated pathogens affecting animal and human health.

Light- and Relative Humidity-Regulated Hypersensitive Cell Death and Plant Immunity in Chinese Cabbage Leaves by a Non-adapted Bacteria Xanthomonas campestris pv. vesicatoria

  • Young Hee Lee;Yun-Hee Kim;Jeum Kyu Hong
    • The Plant Pathology Journal
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    • v.40 no.4
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    • pp.358-376
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    • 2024
  • Inoculation of Chinese cabbage leaves with high titer (107 cfu/ml) of the non-adapted bacteria Xanthomonas campestris pv. vesicatoria (Xcv) strain Bv5-4a.1 triggered rapid leaf tissue collapses and hypersensitive cell death (HCD) at 24 h. Electrolyte leakage and lipid peroxidation markedly increased in the Xcv-inoculated leaves. Defence-related gene expressions (BrPR1, BrPR4, BrChi1, BrGST1 and BrAPX1) were preferentially activated in the Xcv-inoculated leaves. The Xcv-triggered HCD was attenuated by continuous light but accelerated by a dark environment, and the prolonged high relative humidity also alleviated the HCD. Constant dark and increased relative humidity provided favorable conditions for the Xcv bacterial growth in the leaves. Pretreated fluridone (biosynthetic inhibitor of endogenous abscisic acid [ABA]) increased the HCD in the Xcv-inoculated leaves, but exogenous ABA attenuated the HCD. The pretreated ABA also reduced the Xcv bacterial growth in the leaves. These results highlight that the onset of HCD in Chinese cabbage leaves initiated by non-adapted pathogen Xcv Bv5-4a.1 and in planta bacterial growth was differently modulated by internal and external conditional changes.

A Fast and Scalable Inter-Domain MPLS Protection Mechanism

  • Huang, Chang-Cheng;Messier, Donald
    • Journal of Communications and Networks
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    • v.6 no.1
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    • pp.60-67
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    • 2004
  • With the fast growth of Internet and a new widespread interest in optical networks, the unparalleled potential of Multi-Protocol Label Switching (MPLS) is leading to further research and development efforts. One of those areas of research is Path Protection Mechanism. It is widely accepted that layer three protection and recovery mechanisms are too slow for today’s reliability requirements. Failure recovery latencies ranging from several seconds to minutes, for layer three routing protocols, have been widely reported. For this reason, a recovery mechanism at the MPLS layer capable of recovering from failed paths in 10’s of milliseconds has been sought. In light of this, several MPLS based protection mechanisms have been proposed, such as end-to-end path protection and local repair mechanism. Those mechanisms are designed for intra-domain recoveries and little or no attention has been given to the case of non-homogenous independent inter-domains. This paper presents a novel solution for the setup and maintenance of independent protection mechanisms within individual domains and merged at the domain boundaries. This innovative solution offers significant advantages including fast recovery across multiple nonhomogeneous domains and high scalability. Detailed setup and operation procedures are described. Finally, simulation results using OPNET are presented showing recovery times of a few milliseconds.

The Relationship between Human Rights Protection Trade Norms and WTO Agreement-focused on Conflict and Harmonization and Development of Domestic Trade Norms (인권보호 무역규범과 WTO협정의 관계-충돌과 조화 그리고 국내무역규범의 발전방안을 중심으로)

  • Hyun-Chul Kim;Hag-Min Kim
    • Korea Trade Review
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    • v.47 no.5
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    • pp.201-221
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    • 2022
  • This study aims to analyze a harmonious approach between trade norms for the protection of human rights and the WTO agreements is increasingly necessary and important. conflicts and harmonization that may occur between major human rights protection trade norms and WTO agreements were comprehensively reviewed. The hard legalization of corporate social responsibility for sustainable development, such as human rights protection, was in conflict with the WTO Agreement, which was based on the principle of non-discrimination. As the currently expanding human rights protection trade norms reflect differences in the positions of developed and developing countries, it was also pointed out that there may be disputes over WTO compatibility and distorted protectionism measures. Accordingly, the applicability of the general exceptions to Article 20 of the GATT were reviewed together, and Article 20(a) of GATT, "necessary to protect public morals" may differ between developed and developing countries, and thus limitations were also considered. At the same time, When it is necessary to take regulatory measures such as prohibition of imports from a specific country for human rights protection, it was reviewed and proposed domestic trade norms revision.

The Identification, Diagnosis, Prospective, and Action (IDPA) Method for Facilitating Dialogue between Stakeholders: Application to the Radiological Protection Domain

  • Jacques Lochard;Win Thu Zar;Michiaki Kai;Ryoko Ando
    • Journal of Radiation Protection and Research
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    • v.48 no.3
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    • pp.107-116
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    • 2023
  • This article reviews the experience of applying the Identification, Diagnosis, Prospective, and Action (IDPA) facilitating method as a means of promoting practices of dialogue between stakeholders in the radiological protection field. After presenting the characteristics of the IDPA method and its ability to promote active listening, participation, and dialogue among stakeholders facing complex situations, as well as the procedural aspects associated with its practical implementation, the article describes three examples of the application of the method in the field of radiological protection. The first one presents how the IDPA method supported a debate among decision-makers, authorities, experts, professionals, and representatives of non-governmental organizations about how to engage stakeholders in radiological protection. The second example presents how the IDPA method was used in a series of dialogue meetings to explore the challenges of the post-nuclear accident situation resulting from the Fukushima Daiichi Nuclear Power Plant accident. The third one presents the application of the method in the context of a training course organized by Nagasaki University in the affected area close to the damaged plant. Experience has shown that the IDPA method makes it possible to develop responses to problems posed in very different contexts and, in many cases, to find compromises regarding their solutions. The IDPA method has the merit of allowing each of the participants to better understand the situation they are faced with, even if such a positive result is not always achieved.

Effects of Intellectual Property Rights Protection on Services Export Diversification in Developing Countries

  • SENA KIMM GNANGNON
    • KDI Journal of Economic Policy
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    • v.46 no.1
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    • pp.53-89
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    • 2024
  • The effects of the betterment of enforced intellectual property rights (IPRs) provisions on services export diversification are investigated. The analysis used an unbalanced panel dataset of 76 developing countries over the period of 1970-2014. The empirical analysis is based on the feasible generalized least squares estimator. It suggests that the implementation of weaker IPR protection fosters services export diversification in less developed countries (i.e., those whose real per capita incomes are less than US$US$ 1458.60), including those with a low level of export product upgrading. Conversely, in relatively advanced developing countries (countries whose real per capita income exceeds US$ 3356.80), including those with high levels of export product upgrading, the implementation of stronger IPR laws induces greater services export diversification. Finally, the analysis revealed the existence of a non-linear relationship between IPR protection and services export diversification. The implementation of stronger intellectual property laws spurs services export diversification in countries with high degree of IPR protection, especially when IPR protection exceeds a certain level, recorded here as having a score of 1.197. In contrast, in countries with weaker IPR protection, in particular those with IPR protection levels that score less than 0.915, it is rather the implementation of weaker intellectual property laws that promotes services export diversification.

Study on Validity of Using Injinho-tang in Non Alcohoic Fatty Liver Disease (비알콜성 지방간의 약물개발 중 인진호탕(茵蔯蒿湯)의 타당성 연구)

  • Ko, Heung;Kim, Ki Tae;Shin, Seon Mi
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.26 no.6
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    • pp.823-833
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    • 2012
  • Now a days, number of non alcoholic fatty liver patients are increasing more rapidly compare to past rate, and the average age of patients is getting younger, but there are no appropriate therapeutics in non alcoholic fatty liver disease. This study was aimed to analyze relationship between non alcoholic fatty liver disease and Injinho-tang. The papers were collected and analysed from domestic and international journals. The effects of Injinho-tang and constituent-herb were researched. Non-alcoholic fatty liver disease was induced complex causes of the metabolic syndrome. Medications that can be used in non-alcoholic fatty liver disease, it should be have many effects such as anti-hepatic fibrosis, hepatocyte protection, liver cancer inhibitory effect, inflammatory cytokine regulation, improving hyperlipidemia, weight control, decrease the toxicity of the drug, antioxidant. Injinho-tang (Artemisia capillaris Thunb, Gardenia fructus, Rhei rhizome) has been widely used in disease that causes jaundice and liver biliary disease. Drugs for standardization of Injinho-tang index components(6,7-Dimethylesculetin, geniposide, rhein) have been presented. And Injinho-tang has been proven reliability in the administration of single dose toxicity. Also clinical stability in the administration of four years was reported. Injinho-tang has been reported some effects which anti-hepatic fibrosis, hepatocyte protection, liver cancer inhibitor, inflammatory cytokine regulation, improving hyperlipidemia, weight control, decrease the toxicity of the drug, and antioxidant. Therefore, Injinho-tang can be used in Non alcoholic fatty liver disease without Syndrome Differentiation.

Nonexistence and non-decoupling of the dissipative potential for geo-materials

  • Liu, Yuanxue;Zhang, Yu;Wu, Runze;Zhou, Jiawu;Zheng, Yingren
    • Geomechanics and Engineering
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    • v.9 no.4
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    • pp.531-545
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    • 2015
  • Two fundamental issues exist in the damage theory of geo-material based on the concept of thermodynamics: existence or nonexistence of the dissipation potential, and whether the dissipation potential could be decoupled into a damage potential and a plastic one or not. Thermodynamics theory of elastoplastic damage assumes the existence of dissipation potential, but the presence of dissipation potential is conditional. Based on the dissipation inequality in accord with the second law of thermodynamics, the sufficient and necessary conditions are given for the existence of the dissipation potential separately in total and incremental forms firstly, and proved strictly in theory. With taking advantage of the basic mechanical properties of geo-materials, the nonexistence of the dissipative potential is verified. The sufficient and necessary conditions are also given and proved for the decoupling of the dissipation potential of geo-materials in total and incremental forms. Similarly, the non-decoupling of the dissipation potential has also been proved, which indicates the dissipation potential of geo-materials in total or incremental forms could not be decoupled into a dissipative potential for plasticity and that for damage respectively. The research results for the fundamental issues in the thermodynamics theory of damage will help establish and improve the theoretic basis of elastoplastic damage constitutive model for geo-materials.