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A Study on the Development of Limitation of Liability in Maritime Cargo Claims
Le,Thi Thuy Dung,Chung,Cheng-Chi 한국유통과학회 2019 KODISA ICBE (International Conference on Business Vol.2019 No.-
The study is an attempt to analyze the concept of limitation of liability in maritime cargo claims with multiple legal and policy perspectives. Tentative efforts are used to make a comparison among different regimes of liability, to figure out it development. In trying to present a synoptic outlook at the evolution of limitation of liability in case of cargo lost or damaged, this study will briefly explore the historical background to the development of the concept of limitation of liability in maritime law. It will contribute to the discussion of the effect of limitation of liability within the context of the study. The paper will be conducted by analyzing various international conventions pertaining to limitation of liability in particular for maritime cargo claims. To some extent, the paper will take a comparative study among relating international conventions to create and develop the concept of limitation of liability.
Le, Xuan The,Pham, Dung Tien,Pham, Tuan Anh,Tran, Tung Thanh,Khuat, Thanh Huu,Le, Hoa Quang,Vu, Ut Ngoc The Korean Society of Fisheries and Aquatic Scienc 2019 Fisheries and Aquatic Sciences Vol.22 No.8
Bacillus is a diverse genus consisting of more than 200 species with extensive genetic diversity. Their beneficial effects in industrial shrimp farming have been well documented. However, little is known about the biodiversity of the Bacillus spp. in this aquaculture system. Taxonomic analysis by 16S rRNA sequencing does not always allow species-level identification of Bacillus spp. In this study, 26 Bacillus isolates from two industrial Litopenaeus vannamei shrimp ponds in Bac Lieu Province, Vietnam, were analyzed for their genetic diversity by multi-locus sequence typing (MLST). A total of 22 sequence types were identified and segregated into four distinct clusters, corresponding to B. subtilis, B. velezensis, B. siamensis, and B. licheniformis. Bacillus subtilis and B. velezensis accounted for more than 73% of the Bacillus isolates. Notably, the MLST scheme exhibited high discriminatory power and might be further simplified to be a convenient method to identify species of the genus Bacillus.
Le, Dung Tien,Lee, Byung Cheon,Marino, Stefano M.,Zhang, Yan,Fomenko, Dmitri E.,Kaya, Alaattin,Hacioglu, Elise,Kwak, Geun-Hee,Koc, Ahmet,Kim, Hwa-Young,Gladyshev, Vadim N. American Society for Biochemistry and Molecular Bi 2009 The Journal of biological chemistry Vol.284 No.7
<P>Methionine sulfoxide reductases (Msrs) are oxidoreductases that catalyze thiol-dependent reduction of oxidized methionines. MsrA and MsrB are the best known Msrs that repair methionine-S-sulfoxide (Met-S-SO) and methionine-R-sulfoxide (Met-R-SO) residues in proteins, respectively. In addition, an Escherichia coli enzyme specific for free Met-R-SO, designated fRMsr, was recently discovered. In this work, we carried out comparative genomic and experimental analyses to examine occurrence, evolution, and function of fRMsr. This protein is present in single copies and two mutually exclusive subtypes in about half of prokaryotes and unicellular eukaryotes but is missing in higher plants and animals. A Saccharomyces cerevisiae fRMsr homolog was found to reduce free Met-R-SO but not free Met-S-SO or dabsyl-Met-R-SO. fRMsr was responsible for growth of yeast cells on Met-R-SO, and the double fRMsr/MsrA mutant could not grow on a mixture of methionine sulfoxides. However, in the presence of methionine, even the triple fRMsr/MsrA/MsrB mutant was viable. In addition, fRMsr deletion strain showed an increased sensitivity to oxidative stress and a decreased life span, whereas overexpression of fRMsr conferred higher resistance to oxidants. Molecular modeling and cysteine residue targeting by thioredoxin pointed to Cys(101) as catalytic and Cys(125) as resolving residues in yeast fRMsr. These residues as well as a third Cys, resolving Cys(91), clustered in the structure, and each was required for the catalytic activity of the enzyme. The data show that fRMsr is the main enzyme responsible for the reduction of free Met-R-SO in S. cerevisiae.</P>
Connectivity Analysis of Cognitive Radio Ad-hoc Networks with Shadow Fading
( Le The Dung ),( Beongku An ) 한국인터넷정보학회 2015 KSII Transactions on Internet and Information Syst Vol.9 No.9
In this paper, we analyze the connectivity of cognitive radio ad-hoc networks in a log-normal shadow fading environment. Considering secondary user and primary user`s locations and primary user`s active state are randomly distributed according to a homogeneous Poisson process and taking into account the spectrum sensing efficiency of secondary user, we derive mathematical models to investigate the connectivity of cognitive radio ad-hoc networks in three aspects and compare with the connectivity of ad-hoc networks. First, from the viewpoint of a secondary user, we study the communication probability of that secondary user. Second, we examine the possibility that two secondary users can establish a direct communication link between them. Finally, we extend to the case of finding the probability that two arbitrary secondary users can communicate via multi-hop path. We verify the correctness of our analytical approach by comparing with simulations. The numerical results show that in cognitive radio ad-hoc networks, high fading variance helps to remarkably improve connectivity behavior in the same condition of secondary user`s density and primary user`s average active rate. Furthermore, the impact of shadowing on wireless connection probability dominates that of primary user`s average active rate. Finally, the spectrum sensing efficiency of secondary user significantly impacts the connectivity features. The analysis in this paper provides an efficient way for system designers to characterize and optimize the connectivity of cognitive radio ad-hoc networks in practical wireless environment.
Le, Thanh Dung,Kim, Ji Hyung,Park, Sa Il,Kang, Dong-Hyung,Lee, Haigun,Jo, Young-Sik,Yoon, Yong Soo,Kim, Ho Min Institute of Electrical and Electronics Engineers 2015 IEEE transactions on applied superconductivity Vol.25 No.3
<P>A cooling system is an essential part of high-temperature superconducting (HTS) rotating machine manufacturing. Moreover, thermal behavior is a crucial parameter of the cooling system that shows unique characteristics of superconductivity below a specific temperature to maintain a superconducting state. Therefore, many experiments have been performed to investigate new reliable cryogenic cooling systems for a large-scale HTS rotating machine. The motivation for the study is our recent development of the cryogenic cooling system using thermal trigger switches; it effectively minimizes non-operational downtime of the HTS machine in cases of power supply or cryocooler failure. This paper focuses on two main targets. First, the thermal design of the cooling system for the 10 MW-class HTS rotating machine is enhanced. Second, the performance of the cooling system is observed for various cryogens to investigate the feasibility of using solid cryogen.</P>