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The Characteristics and Distribution of Eukaryotic Phytoplankton Community in Liaodong Bay, China
Lun Song,Jing Wu,Jing Du,Nan Li,GuangJun Song,Kun Wang,Ming Sun,Peng Wang 한국해양과학기술원 2019 Ocean science journal Vol.54 No.2
Brown tides have occurred in the Bohai Sea of China since 2009 and caused serious losses in aquaculture. In recent years, phytoplankton identification has been greatly promoted by the development of high-throughput sequencing technologies. In this study, V4 region of 18S rDNA was used as the target gene to design the primer V4 (F/R), and high-throughput sequencing technology was adopted to evaluate the diversity of composition and characteristics of the eukaryotic phytoplankton community. A total of 93 alga species were identified, and about 60% (56 out of 93) of them were undetected or unreported in Chinese waters. There were 59% of the total algal species identified as autotrophy in trophic mode while heterotrophy and mixotrophy accounted for 12% and 29% of the total algal species, respectively. 8 species of picophytoplankton that were mainly distributed in the south and a partial area of the east and west formed the scientific basis for the quality and safety early-warning in aquatic products and brown rides study. Diversity index analysis also revealed a trend of fluctuations of marine phytoplankton diversity in different sample sites in Liaodong Bay. In conclusion, our work provides a detailed evaluation of eukaryotic phytoplankton diversity in Liaodong Bay, suggesting the need for long-term monitoring to further study and guard against the potential risk of harmful algal blooms.
A Study on the Recognition of Number Plate
Lun man Deng(등륜만),Jeong Young Song(송정영) 한국정보기술학회 2007 Proceedings of KIIT Conference Vol.2007 No.-
Along with the development of traffic and the quantitative rise of cars, the intelligent management of traffic and vehicle become more and more important, license plate automatic recognition system is an intelligent traffic management system, the system combined with automatic detection, image process, computer vision, and pattern recognition. In this paper, comprehensive compared former license plate character list to identify a technique, combine the knowledge that the color image and the pattern recognition, carry on analysis to argue to know a vehicle of different type to the background color, then carry on through the license plate structure to concretely identify. Make use of the symmetry of the numeral structure according to the characteristic of the block style numeral structure, the brush stroke characteristics(level,perpendicular,flection) and 5 level straight lines and numeral hand over some piece to carry on arguing to know to the block style numeral. According to block style the characteristic of the Korean word structure, the symmetry, horizontal sweep line, perpendicularity that makes useof the form of written structure scans line a Korean word to carry on arguing to know to the block style.
AutoScale: Adaptive QoS-Aware Container-based Cloud Applications Scheduling Framework
( Yao Sun ),( Lun Meng ),( Yunkui Song ) 한국인터넷정보학회 2019 KSII Transactions on Internet and Information Syst Vol.13 No.6
Container technologies are widely used in infrastructures to deploy and manage applications in cloud computing environment. As containers are light-weight software, the cluster of cloud applications can easily scale up or down to provide Internet-based services. Container-based applications can well deal with fluctuate workloads by dynamically adjusting physical resources. Current works of scheduling applications often construct applications’ performance models with collected historical training data, but these works with static models cannot self-adjust physical resources to meet the dynamic requirements of cloud computing. Thus, we propose a self-adaptive automatic container scheduling framework AutoScale for cloud applications, which uses a feedback-based approach to adjust physical resources by extending, contracting and migrating containers. First, a queue-based performance model for cloud applications is proposed to correlate performance and workloads. Second, a fuzzy Kalman filter is used to adjust the performance model’s parameters to accurately predict applications’ response time. Third, extension, contraction and migration strategies based on predicted response time are designed to schedule containers at runtime. Furthermore, we have implemented a framework AutoScale with container scheduling strategies. By comparing with current approaches in an experiment environment deployed with typical applications, we observe that AutoScale has advantages in predicting response time, and scheduling containers to guarantee that response time keeps stable in fluctuant workloads.
Colorful Oxide Film Formation on Titanium by using EDM Process
Yao-Yang Tsai,Pei-Lun Song,Jeffrey Shih-Chung Fang 한국정밀공학회 2013 International Journal of Precision Engineering and Vol. No.
This paper describes the influence of the main factor on the colorful titanium oxide reacted film fabricated by EDM (Electrical Discharge machining). In our process, copper, together with pure titanium sheet, was used as anode and cathode (workpiece)respectively, and dielectric medium involved in the study was tap water. From the figures and tables shown, we can observe that colors of titanium oxide reacted films change with the increase of open voltages (0~240) from yellow (10 V), purple (20 V), indigo (30 V),golden yellow (70 V), to peach (100 V), blue (130 V), yellow green (180 V), pink (240 V). The other open voltages produce mixed colors between those created by neighboring voltages. Moreover, XRD as well as EDS analysis have made it evident that the structure of the reacted film mentioned above is Ti2O other than TiO2 and the rise of pulse duration and interval will cause non-uniform color distribution. Compared with anodizing process, the Electrical Discharge machining approach we developed for generating colorful titanium oxide reacted film in the paper is much simpler, faster, cheaper and have plenty of advantages still in environment protection and hazard avoidance.
The study of physical mixing effect to improve the activity of NiCo-based OER elctrocatalyst
Eon-ju Park,Sungjun Heo,Chiho Kim,Song Jin,Jae-Yeop Jeong,Shin-woo Myeong,Ho-seok Lee,Jae-hun Lee,Nam-in Kim,Jun Young park,Jooyoung Lee,Oi Lun Helena Li,Sung Mook Choi 한국표면공학회 2023 한국표면공학회 학술발표회 초록집 Vol.2023 No.11-1
p13 from group II baculoviruses is a killing-associated gene
( Nan Lu ),( En Qi Du ),( Yang Kun Liu ),( Hong Qiao ),( Lun Guang Yao ),( Zi Shu Pan ),( Song Ya Lu ),( Yi Peng Qi ) 생화학분자생물학회(구 한국생화학분자생물학회) 2012 BMB Reports Vol.45 No.12
p13 gene was first described in Leucania separata multinuclear polyhedrosis virus (Ls-p13) several years ago, but the function of P13 protein has not been experimentally investigated to date. In this article, we indicated that the expression of p13 from Heliothis armigera single nucleocapsid nucleopolyhedrovirus (Ha-p13) was regulated by both early and late promoter. Luciferase assay demonstrated that the activity of Ha-p13 promoter with hr4 enhancer was more than 100 times in heterologous Sf9 cells than that in nature host Hz-AM1 cells. Both Ls-P13 and Ha-P13 are transmembrane proteins. Confocal microscopic analysis showed that both mainly located in the cytoplasm membrane at 48 h. Results of RNA interference indicated that Ha-p13 was a killing-associated gene for host insects H. armigera. The AcMNPV acquired the mentioned killing activity and markedly accelerate the killing rate when expressing Ls-p13. In conclusion, p13 is a killing associated gene in both homologous and heterologous nucleopolyhedrovirus. [BMB Reports 2012; 45(12): 730-735]