• Title/Summary/Keyword: WoT

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Recovery of the Vanadium and Tungsten from Spent SCR Catalyst Leach Solutions by Hydrometallurgical Methods (SCR 폐촉매 침출액으로부터 습식제련법에 의한 바나듐, 텅스텐의 회수)

  • Choi, In-Hyeok;Moon, Gyeonghye;Jeon, Jong-Hyuk;Lee, Jin-Young;Jyothi, Rajesh Kumar
    • Resources Recycling
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    • v.29 no.2
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    • pp.62-68
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    • 2020
  • In new millennium, wide-reaching demands for selective catalytic reduction (SCR) catalyst have been increased gradually in new millennium. SCR catalyst can prevent the NOx emission to protect the environment. In SCR catalyst the main composition of the catalyst is typically TiO2 (70~80%), WO3 (7~10%), V2O5 (~1%) and others. When the SCR catalysts are used up and disposed to landfills, it is problematic that those should exist in the landfill site permanently due to their extremely low degradability. A new advanced technology needs to be developed primarily to protect environment and then recover the valuable metals. Hydrometallurgical techniques such as leaching and liquid-liquid extraction was designed and developed for the spent SCR catalyst processing. In a first stage, V and W selectively leached from spent SCR catalyst, then both the metals were processed by liquid-liquid extraction process. Various commercial extractants such as D2EHPA, PC 88A, TBP, Cyanex 272, Aliquat 336 were tested for selective extraction of title metals. Scrubbing and stripping studies were tested and optimized for vanadium and tungsten extraction and possible separation. 3rd phase studies were optimized by using iso-decanol reagent.

Der anti-theatralische Topos im modernen Theater -Die Ästhetik der Abwesenheit und des Webens- (현대 연극의 반-연극적 지형 -부재와 직조의 미학-)

  • Lee, Kyung-Mi
    • Journal of Korean Theatre Studies Association
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    • no.40
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    • pp.277-305
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    • 2010
  • Die heutigen Experimente, die seit fast 20 Jahren in den Theaterbereiche $durchgef{\ddot{u}}hrt$ werden, sind so verschieden, $da{\ss}$ wir gar nicht voraussehen $k{\ddot{o}}nnen$, wieweit sie ihre Grenze mehr erweitern werden. Sie brechen alle vertrauten theatralischen Konventionen, ob diese Konventionen mit Text, Schauspielkunst oder Raum usw. zu tun haben. Und sie fragen sich selbst, was Theater in der heutigen simulierten Gesellschaft bedeuten soll. Die vorliegende Arbeit untersucht anhand einigen $Auff{\ddot{u}}hrungen$, die von solchen Selbstbefragen ausgehen, wieweit sie sich von den tradtionellen Theaterabeiten entfernen und welche neue $Theater{\ddot{a}}sthetik$ sie herzustellen versuchen, um der $gegenw{\ddot{a}}rtigen$ Gesellschaft, besonders nach 1990 Jahre, zu entsprechen. Nach dem Zusammenbruch des Ost-Blocks hat sich die Welt radikaler denn je $ver{\ddot{a}}ndert$. Durch die $revolution{\ddot{a}}ren$ Technologien wie Mobilfunk und Internet verwischen sich die Grenzen zwischen Wirklichkeit und Fiktion, zwischen Original und Nicht-original mehr und mehr. Die letztliche globale Finanz- und Wirtschaftskriese hat die ganze Welt in Schockzustand versetzt, aber man scheint bei den verschiedenen Schreckenzeneraien und den negativen Meldungen daraus noch keine "Lehre" gezieht zu haben. Die Experimente, die in dem Bereich der zeitigen Theaterarbeiten gewagt werden, sind die Versuche, die Theater selbst macht, um eine den radikalen gesellschaflichen $Ver{\ddot{a}}nderungen$ entsprechende neue $k{\ddot{u}}nstliche$ Aufgabe zu suchen. In dieser Arbeit $m{\ddot{o}}chte$ ich sie, $ant{\acute{i}}-theatralische$ Strategien nennen, weil sie jenseits der konventionellen theatralischen Arbeitsweise liegen. Diese $R{\ddot{a}}ume$, wo solche $Auff{\ddot{u}}hrungen$ gespielt werden und $nat{\ddot{u}}rlich$ auch den Zuschauerraum $einschlie{\ss}en$, sind, die $R{\ddot{a}}ume$ des Abwesenheit und des Abweichens,,, weil sie dem $gew{\ddot{o}}hnlichen$ Wunsch des Publikums, alles zu sehen, entgegenkommen. Sie fordern dem Zuschauer, der auch zu ihren wichtigen theatralische Element $geh{\ddot{o}}rt$, $da{\ss}$ er an ihren $Auff{\ddot{u}}hrungen$ mit den ganz anderen Sichtweise als den ${\ddot{u}}berlieferten$ aktiv, teilnehmen, $mu{\ss}$. Sie wollen ihre $Auff{\ddot{u}}hrungen$ zu den $Erfahrungsr{\ddot{a}}umen$ machen, wo der Zuschauer ${\ddot{u}}ber$ sich und sein eigenes Leben selbst reflektieren kann, indem er die wahrgenommenen Ereignisse zu seinen eigenen Erfahrungen $zusammenf{\ddot{u}}gt$. Dadurch wird die Dichtonomie zwischen den Sichtbaren und den Nicht-Sichtbaren $entsch{\ddot{a}}rft$.

Design and Implementation of Bio-data Monitering System Based on ISO/IEEE 11073 DIM/REST for IoT Healthcare Service (IoT 헬스케어 서비스를 위한 ISO/IEEE 11073 DIM/REST 기반 생체정보 모니터링 시스템 설계 및 구현)

  • Choi, Ju-Hyun;Chun, Seung-Man;Jang, Dong-Hyun;Park, Jong-Tae
    • Journal of the Institute of Electronics and Information Engineers
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    • v.52 no.3
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    • pp.3-12
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    • 2015
  • Recently, various studies have been attempted to provide a biological information monitoring service through integrating with the web service. The medical information transmission standard ISO/IEEE 11073 PHD defines the optimized exchange protocol ISO/IEEE 11073-20601 based on the No-IP to exchange the biometric information between the ISO/IEEE 11073 agent and the manager. It's system structure based on the No-IP using ISO/IEEE 11073-20601 is not suitable for providing a remote biological information monitoring services. That is because it is difficult to provide to control and manage the biological information measurement devices, which have installed IP protocol stack at the remote. Furthermore, ACSE and CMDISE in ISO/IEEE 11073-20601 are not suitable to provide U-healthcare services based on IoT because they are complicated and difficult to implement it caused by the structural complexity. In order to solve the problems, in this paper, we propose the biological information monitoring architecture based on ISO/IEEE 11073 DIM/REST of IoT environment to provide the biological information monitoring service based on IoT. To do this, we designed biological information monitoring system architecture based on IoT and the message exchange protocol of ISO/IEEE 11073 DIM/REST between the ISO/IEEE 11073 agent and the ISO/IEEE 11073 manager. In order to verify the realistic possibility of the proposed system architecture, we developed the service prototype.

Mutual Authentication and Key Establishment Mechanism for Secure Data Sharing in M2M Environment (M2M 환경에서 안전한 데이터 공유를 위한 상호인증 및 키 교환 기법)

  • Park, JungOh;Kim, Sangkun
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.15 no.4
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    • pp.33-41
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    • 2015
  • With rapid rise of virtualization technology from diverse types of cloud computing service, security problems such as data safety and reliability are the issues at stake. Since damage in virtualization layer of cloud service can cause damage on all host (user) tasks, Hypervisor that provides an environment for multiple virtual operating systems can be a target of attackers. This paper propose a security structure for protecting Hypervisor from hacking and malware infection.

Formation of Coatings on SKD11 Core Mold Steel by Plasma Electrolytic Oxidation (코어금형용강 SKD11의 플라즈마 전해산화에 의한 피막 형성)

  • Kim, S.M.;Lee, T.H.;Kang, S.J.;Cho, Y.H.;Koo, J.M.
    • Journal of the Korean Society for Heat Treatment
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    • v.24 no.4
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    • pp.209-216
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    • 2011
  • Surface coatings were prepared on SKD11 core mold steel by plasma electrolytic oxidation (PEO). The coatings were investigated about the formation condition of core mold steel. SKD11 were coated by PEO in a mix solution of Sodium Aluminate $NaAlO_2$ (10 g/l), Sodium Silicate powder $Na_2SiO_3$ (0.5 g/l), Sodium tungstate dihydrate $Na_2WO_42H_2O$ (0.5 g/l) at less than $30^{\circ}C$. The electrical condition were voltage : 500~600 V; Pulse : 600~1800 Hz; current density 15~20 $A/dm^2$ various time : 3 min~40 min. The coatings surface morphology, cross-section, friction coefficient, hardness were investigated. The PEO coatings on SKD11 core mold steel showed the extended service life.

A Study on the degradation mechanism of PAN-LiCLO$_4$ Polymer Electrolyte EC windows (PAN-LIClO$_4$ 계 고분자전해질 EC창의 열화 기구에 관한 연구)

  • 김용혁;김형선;조원일;조병원;윤경석;박인철
    • Journal of the Korean institute of surface engineering
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    • v.30 no.4
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    • pp.223-230
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    • 1997
  • Tungsten oxide and nickel oxide thin films were deposited onto ITO(Indium Tin Oxide) transparent glass by the E-beam evaporation and were used as a cathode and an anode for the EC(Electrochromic) smart window, respectively. Stoichiometric structures of the deposited films were investigated by the implementation of XPS(X-ray Photoelectron Spectroscopy) analysis and the results were $WO_{2.42}$ and $NiO_{0.44}$. This oxygen deficincy might affect affect the transparency of the thin films. The electrolyte for the EC smart windows was PAN-$LiCIO_4$ conducting polymer. EC(Ethylene Carbonate)and PC(Propylene Carbonate) were added as plasticizer to enhance ion conductivity. When the weight ratio of the EC : PC was 3 : 1, transmission difference and cycle life performance were tested. Polymer EC windows showed 40% $\Delta$T at 1.5V operating volage for 3,200 cycles. Structural degradation was observed by the SIMS(Secondary Ion Mass Spectroscopy) analysis and it was confirmed that structural degradation of polymer caused by the solvent evaporation was the main cause to degrade EC smart windows.

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Aspergillus cumulatus sp. nov., from Rice Straw and Air for Meju Fermentation

  • Kim, Dae-Ho;Kim, Seon-Hwa;Kwon, Soon-Wo;Lee, Jong-Kyu;Hong, Seung-Beom
    • Journal of Microbiology and Biotechnology
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    • v.24 no.3
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    • pp.334-336
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    • 2014
  • A new species named Aspergillus cumulatus sp. nov. is described in Aspergillus section Aspergillus (Eurotium state). The type strain (KACC $47316^T$) of this species was isolated from rice straw used in meju fermentations in Korea, and other strains were isolated from the air in a meju fermentation room. The species is characterized by growth at a wide range of water activities and the formation of aerial hyphae on malt extract 60% sucrose agar (ME60S) that resemble a cumulus cloud. Furthermore, A. cumulatus produces yellow ascomata containing small lenticular ascospores (5.1-5.7 ${\mu}m$) with a wide furrow, low equatorial crests, and tuberculate convex surface. The species is phylogenetically distinct from the other reported Aspergillus section Aspergillus species based on multilocus sequence typing using rDNA-ITS, ${\beta}$-tubulin, calmodulin, and RNA polymerase II genes.

Surgical Reconstruction of the Severe Tongue Laceration with Mandibular Fracture in a Siberian Husky Dog

  • Lee, Jae-Hoon;Kim, Tae-Hoon;Yang, Wo-Jong;Kang, Eun-Hee;Chang, Hwa-Seok;Chung, Dai-Jung;Choi, Chi-Bong;Lee, Jeong-Ik;Kim, Hwi-Yool
    • Journal of Veterinary Clinics
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    • v.25 no.6
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    • pp.545-548
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    • 2008
  • A 3-year-old castrated male Siberian husky was presented for evaluation after being hit by a car. On physical examination, the dog showed open-mouth, displacement of mandible and hypersalivation with blood ting. The base of tongue was transected almost 80% on the bias from right dorsal side to the left ventral side. Radiography demonstrated separation of mandible symphysis, and fracture of right condyle and vertical ramus. After debridement of the necrotic tissue, tongue apposition with simple interrupted suture was performed. Mandibular symphysis, condyle and mandibular vertical ramus fractures were fixed using pin, cerclage wire, T-plate, and K-wires. The mouth was irrigated daily using chlorhexidine after surgery. The sutures that were loose here or untied at tongue were re-sutured under sedation. The transected tongue was healed and recovered its normal movement after 6 weeks.

Keywords and Spatial Based Indexing for Searching the Things on Web

  • Faheem, Muhammad R.;Anees, Tayyaba;Hussain, Muzammil
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.16 no.5
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    • pp.1489-1515
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    • 2022
  • The number of interconnected real-world devices such as sensors, actuators, and physical devices has increased with the advancement of technology. Due to this advancement, users face difficulties searching for the location of these devices, and the central issue is the findability of Things. In the WoT environment, keyword-based and geospatial searching approaches are used to locate these devices anywhere and on the web interface. A few static methods of indexing and ranking are discussed in the literature, but they are not suitable for finding devices dynamically. The authors have proposed a mechanism for dynamic and efficient searching of the devices in this paper. Indexing and ranking approaches can improve dynamic searching in different ways. The present paper has focused on indexing for improving dynamic searching and has indexed the Things Description in Solr. This paper presents the Things Description according to the model of W3C JSON-LD along with the open-access APIs. Search efficiency can be analyzed with query response timings, and the accuracy of response timings is critical for search results. Therefore, in this paper, the authors have evaluated their approach by analyzing the search query response timings and the accuracy of their search results. This study utilized different indexing approaches such as key-words-based, spatial, and hybrid. Results indicate that response time and accuracy are better with the hybrid approach than with keyword-based and spatial indexing approaches.

Complete genome sequence of Celluosilyticum lentocellum WCF-2 isolated from cow dung (소 분변에서 분리된 Celluosilyticum lentocellum WCF-2의 유전체 염기서열 분석)

  • Heo, Jun;You, Jaehong;Park, InCheol;Han, Byeong-Hak;Kwon, Soon-Wo;Ahn, Jae-Hyung
    • Korean Journal of Microbiology
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    • v.55 no.3
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    • pp.313-315
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    • 2019
  • An anaerobic bacterial strain WCF-2 was isolated from cow dung in finding cellulose-degrading bacteria for use as silage additives. Strain WCF-2 showed a higher cellulolytic activity than Cellulosilyticum lentocellum DSM $5427^T$, the closest relative of strain WCF-2 (98.2% of 16S rRNA gene sequence similarity). We sequenced the complete genome of strain WCF-2 and compared it with that of C. lentocellum DSM $5427^T$. The OrthoANI value between the two strains was 97.9% thus strain WCF-2 was identified as C. lentocellum. The genome size of strain WCF-2 was 4,779,774 bp with a G + C content of 34.4%, 4,154 coding genes (CDS), 54 pseudo genes, and 142 RNA genes. Strain WCF-2 harbored seven cellulase genes, five of which showed low similarities with those of C. lentocellum DSM $5427^T$.