Park C.G.,Korea Testing Laboratory |
Kim J.C.,Korea Testing Laboratory
Desalination and Water Treatment | Year: 2012
One of the objectives of this study was to delineate the effect of nitrate on the oxidation of di (2-ethylhexyl) phthalate (DEHP) by conducting bench-scale UV/H2O2 operations under a variety of UV doses and initial concentrations of H2O2 and NO- 3 -N. Also, this study evaluated the two processes, UV alone and UV/H2O2, for DEHP oxidation. DEHP separation and quantification were performed using liquid chromatography-electrospray ionization tandem mass spectrometry system (LC-ESI-MS/MS). It was found that the UV photolysis of H2O2 is a more effective method of DEHP oxidation than the direct UV photolysis. It was observed that the DEHP oxidation efficiency of about 85.0% or higher could be achieved at a UV dose of 800 mJ/cm2 with an initial H2O2 concentration of more than 30mg/L in the absence of nitrate. Nitrate hindered the DEHP oxidation by acting as ·OH scavengers. The adverse effect by nitrate in the UV/H2O2 process was significantly greater than that in the UV oxidationalone, and its oxidation was almost reduced to half by nitrate under some operating condition. However, it is noted that the DEHP oxidation efficiency of more than 70% could be expected at a UV dose of 600 mJ/cm2 with an initial H2O2 concentration of 50mg/L while considering the nitrate scavenging effect. © 2012 Desalination Publications.
Kim G.-H.,Korea Testing Laboratory |
Kim Y.-G.,Agency for Defense Development |
Chung K.-Y.,Sangji University
Multimedia Tools and Applications | Year: 2015
In this paper, we propose the towards virtualized and automated software performance test architecture. In general, test engineers use the public performance testwares such as Load Runner, Silk Performer to validate the performance efficiency of their own systems. In case that they do not allowed to use the performance testwares due to the technical limitations in the testwares, most testers should perform the testing in manually. According to the waste of computer and human resources resulted from the situation, we need to propose the test automation scheme by using the virtualization technology to prevent the dissipation in the test environment which has limited resources. The system architecture considered efficient usage of computer resources and test automation to reduce human acts are addressed mainly in this paper. we describe our proposed method which deals with the system architecture and test automation procedures. In our system architecture, we will show how to use the virtual machines and the types of the virtual machines for performance measurement. In addition, the six steps of the test automation are introduced for the automated testing procedures. Finally, a number of experiments show that the proposed schemes allow offering the possibility for automated software performance testing by using the virtualization. © 2013, Springer Science+Business Media New York.
Jeon Y.-W.,Korea Testing Laboratory
Environmental Engineering Research | Year: 2015
In this study, we attempted to solubilize protein in slaughter blood (SB) using ultrasonic technology. The application of ultrasonic technology can make enzymatic degradation of SB more effective, which has no comparable alternative for treatment. The SB was homogenized by grinding it for 10 minutes at 10,000 rpm as a pretreatment for preventing its clotting, and then ultrasonic treatment was attempted to solubilize protein in SB. To maximize the efficiency of ultrasonic treatment for SB, the optimum condition of ultrasonic frequency (UF) was determined to be 20 kHz. To optimize the operation conditions of ultrasonification with 20 kHz of frequency, we used response surface methodology (RSM) based on ultrasonic density (UD) and ultrasonification time (UT). The solubilization rate (SR) of protein (%) was calculated to be 101.304 – 19.4205 X1 + 0.0398 X2 + 7.9411 X1 2 + 0.0001 X2 2 + 0.0455 X1X2. From the results of the RSM study, the optimum conditions of UD and UT were determined at 0.5 W/mL and 22 minutes, respectively, and SB treated under these conditions was estimated to have a 95% SR. Also, experimentally, a 95.53% SR was observed under same conditions, accurately reflecting the theoretical prediction of 95%. © 2015 Korean Society of Environmental Engineers.
Kim K.-M.,Korea Institute of Construction Technology |
Heo Y.-S.,Korea Institute of Construction Technology |
Kang S.-P.,Woosuk University |
Lee J.,Korea Testing Laboratory
Cement and Concrete Composites | Year: 2014
This study proposes using sodium silicate-based nano-silica (SS) in cement composites. The effect of the addition of the proposed nano-silica on cement composites was compared to that of conventional ethyl silicate-based nano-silica (ES) and silica fume (SF). This study found that the inclusion of SS in cement composites has mainly two effects on their properties: one is a fast pozzolanic reaction, and the other is a pore-filling effect in a cement matrix. As a result, SS dramatically improves the early-age strength of cement composites by up to 184% and 152%, compared to a control specimen and the specimen with ES inclusion, respectively. Calorimetry, X-ray diffraction (XRD), scanning electron microscope (SEM) and mercury intrusion porosimetry (MIP) tests were conducted to monitor the effects of these nano-silicas. © 2013 Elsevier Ltd. All rights reserved.
Korea Testing Laboratory | Date: 2014-05-16
Provided is an apparatus for testing the performance of carbon dioxide sorbents, the apparatus including: a reactor accommodating carbon dioxide sorbents therein; an injection part coupled with the reactor and injecting a gas mixture containing carbon dioxide into the reactor; a reaction furnace which is maintained at a preset temperature and into which the reactor is inserted; a discharge part coupled with the reactor and discharging exhaust gas generated after a reaction of the gas mixture and the sorbents out from the reactor; and analysis part analyzing a carbon dioxide concentration of the exhaust gas discharged from the discharge part, wherein the reactor includes a reactor for wet-type carbon dioxide sorbents and a reactor for dry-type carbon dioxide sorbents, and the reactor for wet-type carbon dioxide sorbents and the reactor for dry-type carbon dioxide sorbents can be alternately inserted into the reaction furnace.
News Article | December 19, 2016
The mystery of the explosive Samsung Galaxy Note 7 might finally have been solved. More than two months after Samsung completely discontinued and recalled the handset, it’s reportedly completed its investigation into what caused the phone to overheat and – in some cases – catch fire. But the company seemingly isn’t ready to share the explanation with the world, as according to The Investor it’s so far only reported its findings to laboratories, such as the Korea Testing Laboratory and UL (a US safety organization). While Samsung apparently isn’t ready to go public with its conclusion quite yet, it probably will soon if the investigation really is complete, as it previously promised to transparently share its findings. In sending its findings to independent labs, Samsung is likely seeking agreement and satisfaction with its conclusions into the incident. Once it has that information the brand should (we hope) share it with the world – perhaps even within the next few weeks. Once it does, we all might finally be able to close the book on what must go down as the biggest disaster in smartphone history. But if the Samsung Galaxy S8 is even half the phone it’s rumored to be then by early 2017 the Note 7’s flammable faults could be a distant memory.
News Article | December 16, 2016
Samsung has reportedly completed internal investigation over Galaxy Note 7 units catching fire, and it has already disclosed the findings to outside laboratories, such as the Korea Testing Laboratory, and UL. Initially, Samsung's then-flagship was vaunted as one of the top-tier Android smartphones consumers could purchase, but this reputation was soon tainted by numerous cases of exploding units. The incidents convinced Samsung to trawl back all the affected units, but its numerous measures didn't straighten out the faux pas. In the end, Samsung canceled production of Galaxy Note 7 handsets altogether. Samsung started investigating the situation right away, but it had trouble mimicking the conditions under which the devices caught fire, according to some reports. The company promised to formally disclose the cause by the end of the year, and a new report suggests that Samsung knows what had caused the combustions, but it's not exactly in sharing spirits as of the moment. The report comes from The Investor, and it suggests that the South Korean electronics company has found out the fault behind exploding units. The results of the investigation have so far remained unshared with the press. Various publications have attempted to explain the Galaxy Note 7 debacle, with several reports getting hold of the company's preliminary findings submitted to the Korean Agency for Technology and Standards, wherein Samsung linked the explosion to a manufacturing error. The Galaxy Note 7 fiasco dented the company's profits, and in an attempt to recuperate from the loss while simultaneously gaining back consumer loyalty, Samsung is gearing up for the forthcoming release of its next flagship, the Galaxy S8. According to the same report by The Investor, however, the company is urging its employees to tighten security before it releases the smartphone. "I feel deeply regretful to hear news of the recent attempts at data breach and prototype leak," Koh Dong-jin, Samsung's mobile business chief, said. His call to put on a lid on the Galaxy S8 was prompted by growing and varied speculation about the device. The Galaxy S8 continues to enjoy a trove of rumors, with some suggesting that it'll come equipped with Bluetooth 5.0, rock a rear-mounted fingerprint and iris scanner, and lug built-in Harman stereo speakers, among other things. The Galaxy S8 will be released sometime in 2017, but an official unveiling could be scheduled earlier. It remains to be seen whether the device can patch consumers' warped loyalty for the company given the Galaxy Note 7 blunder. Can Samsung reclaim consumers with the Galaxy S8? Feel free to sound off in the comments section below! © 2017 Tech Times, All rights reserved. Do not reproduce without permission.
News Article | October 17, 2016
The South Korean government and Samsung launch separate probes to identify what caused Galaxy Note 7 handhelds to catch fire. South Korean officials tasked the Korea Testing Laboratory (KTL) with pinpointing the cause behind the issue that ignited one of the worst PR storms in Samsung's history. KTL's investigation began last Oct. 13, Thursday, government officials familiar with the probe detail to the Yonhap news agency. Moreover, according to the same officials, KTL will not center the investigation on just the batteries but will also scrutinize the whole device by leveraging the latest technologies it has access to, such as computerized tomography and X-rays. Alongside the state-run laboratory, Samsung will also launch its own investigation regarding the problem that had it issue back-to-back recalls and caused plenty of customers to turn away from the brand. "We have handed over the phones (that caught fire) to KTL and will cooperate with their investigation, but we can't just sit and wait for its result," a Samsung Electronics official tells Yonhap. "We have been mobilizing all possible resources to find the exact cause of the problems as soon as possible." To date, Samsung has already issued two recalls for the said handhelds — one for the defective original Galaxy Note 7 and another for replacement Note 7 units, which also turned out to be defective. However, the phone maker is yet to give specifics and elaborate on earlier statement that points to battery-cell issues as the culprit for the handhelds that caught fire. Moreover, the replacement units that were fitted a different battery also caught fire. This recent development puts in question what Samsung missed on its first investigation and whether the battery is really the problem. Samsung halted sales of the Galaxy Note 7 with its issuance of the second recall. Prior to the Note 7 issue surfacing, Samsung Electronics forecasted a $6.7 billion profit for Q3 2016. After the first recall, the profit forecast was cut down to $4.6 billion. Samsung estimates that it will continue to lose roughly $3 billion in profit for the next couple of quarters. It doesn't take a genius to realize that Samsung needs to restore the public's trust and regain the customer base it lost. Finding out exactly what caused the Note 7 to catch fire and properly addressing it will be a good start. Samsung will need all the good publicity it can gather prior to the Galaxy S8 coming out. © 2017 Tech Times, All rights reserved. Do not reproduce without permission.
News Article | October 28, 2016
SEOUL, SOUTH KOREA--(Marketwired - Oct 25, 2016) - Hosted by The Economist Korea and sponsored by Joongangilbo, JTBC-TV, Ministry of Science, ICT and Future Planning, and Ministry of Trade, Industry and Energy, the winners of '2016 Korean Economy Leader' award were announced. The winners of '2016 Korean Economy Award' were given to 35 economic leaders among various companies and organizations in 11 categories of management such as Innovation, Human Resource, Future Planning, Sustainability, Ethics, Corporate Responsibility, Branding, Synergy, Global, Research and Development, and Economics. The award ceremony was held on October 14th at Millennium Hilton Hotel in Seoul. The following is the list of award winners: Bo-Saeng, Park (Mayor / Gimcheon-City) Gi-Woo, Lee (President / JEI University) Yang-Seok, Ryu (Chairman / Seoyon E-Hwa Co., Ltd.) Un-Ha, Roh (CEO / Panasonic Korea, Ltd.) Suk-Ju, Hwang (Governor / Sunchang-County) Byeong-Ho, Ahn (Governor / Hampyeong-County) Yong-Sun, Shin (Chairman / Korea Road Traffic Authority) Jong-Hyun, Chang (President / Baekseok Culture University) Dong-Won, Kwak (CEO / Busan Metropolitan Corporation) Kook-Young, Han (Head Manager / Arisu, the Office of Waterworks Seoul Metropolitan Government) Kyung-Bae, Park (Chairman / Korea Local Promotion Foundation) Soon-Heung, Chang (President / Handong Global University) Won-Bok, Lee (President & CEO / Korea Testing Laboratory) Chul, Lee (Chairman / Noble Nomard HP Co., Ltd.) Chul-Woo, Lee (CEO / Daesung Electroc Co., Ltd.) Hyun-Kun, Lee (CEO / Mycomsoft, Inc.) Hyun-Sook, Chang (CEO / Semi Shipping Co., Ltd.) Sung-Ho, Jun (CEO / Solum Co., Ltd.) Hwa-Sun, Shin (CEO / Shinwha Real Estate Research & Development Institute) In-Sik, Kim (Chairman / Cherrybro Co., Ltd.) Hwa-Seon, Choi (CEO / Kirby Korea) Sung-Ook, Kim (CEO / KT Music Corp.) Chul-Jong, Yoo (CEO / Funding Platform) Moon-Seok, Kim (CEO / How To Invest) Seung-Soo, Kang (Vice-President / Hamssem Co., Ltd.) Jeong-Bok, Yoo (Mayor / Incheon Metropolitan City) Nac-Yeon, Lee (The Governor of a Province / Jeollanam-do) Moon-Oh, Kim (Governor / Dalseong-County) Yong-Boo, Lee (Governor / Boseong-County) Jong-gil, Je (Mayor / Ansan-City) Pil-Un, Lee (Mayor / Anyang-City) Sun-Bong, Hwang (Governor / Yesan-County) Woo-Chul, Shin (Governor / Wando-County) Sun-Yeung, Yun (Mayor / Jung-gu, Daegu Metropolitan City) Hyeon-Jong, Lee (Governor/ Cheorwon-County)
News Article | February 16, 2017
Leading 5G Organizations in Korea and the Americas Agree to Cooperation BELLEVUE, WA and SEOUL, SOUTH KOREA--(Marketwired - February 16, 2017) - 5G Americas, a trade association that is the voice of 5G and LTE for the Americas and the 5G Forum Korea, a group that aims to become the leading force in the development of next-generation communications technology announced a Memorandum of Understanding (MOU) today for cooperation in next-generation (5G) mobile communications. Chris Pearson, President of 5G Americas stated, "To reach the objectives of 5G technology, the industry should continue to invest in mutually beneficial partnerships that will in turn enable further innovation for the large and diverse mobile wireless ecosystem." The MOU, signed by Chris Pearson, President of 5G Americas and Professor Youngnam Han, Executive Committee Chairman of the 5G Forum outlines ways the organizations can collaborate on 5G. The MoU specifically highlights many areas of possible cooperation affecting the next generation mobile network ecosystem including spectrum requirements, technology analysis and global standardization trends. 5G Americas and the 5G Forum each have independent 5G work programs that will continue to contribute on their own to the global development of Next Generation Mobile Networks. The 5G standard is principally being developed at the Third-Generation Partnership Project (3GPP) with the initial phase, named Release 15, expected to be completed by June of 2018 and the second phase, named Release 16, expected to be completed by December of 2019. The International Telecommunication Union (ITU) will review and evaluate 5G standards under their IMT-2020 process. Youngnam Han, Executive Committee Chairman of 5G Forum, commented, "Cooperation between leading 5G wireless organizations throughout the world is vital to the success of the next generation mobile ecosystem that the industry envisions. The 5G Forum looks forward to working with 5G Americas." The two organizations are currently under an MOU with three other global associations in the creation of a bi-annual "Global 5G Event" that includes 5G-PPP in the European Union, 5GMF in Japan and IMT-2020 in China. The event was initially hosted in Beijing by IMT-2020 in June 2016 with the second event in Rome hosted by 5G PPP in November 2016; the 2017 event will be hosted on May 24 and 25 by 5GMF in Japan. The Global 5G Event is a further opportunity to collaborate and educate global leaders regarding the status of the development and trials for 5G. About 5G Americas: The Voice of 5G and LTE for the Americas 5G Americas is an industry trade organization composed of leading telecommunications service providers and manufacturers. The organization's mission is to advocate for and foster the advancement and full capabilities of LTE wireless technology and its evolution beyond to 5G, throughout the ecosystem's networks, services, applications and wirelessly connected devices in the Americas. 5G Americas is invested in developing a connected wireless community while leading 5G development for all the Americas. 5G Americas is headquartered in Bellevue, Washington. More information is available at www.5gamericas.org. Follow our news on Twitter at @5GAmericas and Facebook at www.facebook.com/5gamericas. 5G Americas' Board of Governors members include: América Móvil, AT&T, Cable & Wireless, Cisco, CommScope, Entel, Ericsson, Hewlett Packard Enterprise (HPE), Intel, Kathrein, Mitel, Nokia, Qualcomm, Sprint, T-Mobile US, Inc. and Telefónica. 5G Forum, which was established on May 2013 in Korea, is a non-profit organization with the aim of globally leading and promoting 5G toward the year 2020. The scope/objectives of the 5G Forum are to develop vision and service, to study spectrum aspects, to identify potential technologies, to collaborate for global harmonization and to bridge between industries and government. 5G Forum provides a public partnership platform for the promotion of 5G mobile communication with members from wireless industries, research institutes, and academia including global companies and organizations. More information is available at www.5gforum.org/eng. Currently, the 5G Forum consists of Board Members: SK Telecom, KT, LG U+, Samsung, LG Electronics, Ericsson-LG, LIMEI, KMW, ETRI (Electronics and Telecommunications Research Institute). Other 5G Forum members include: GiGA Korea Foundation, Ace Technology, Anritsu, Contela, Daejeon TechnoPark, GERi (Gumi Electronics & Information Technology Research Institute), GSI, Huawei, Innowireless, Intel, InterDigitalL, Keysight Technologies, KTL (Korea Testing Laboratory), Daegu TechnoPark, National Instruments, Nokia, Qualcomm, Rohde & Schwarz, Samhwa Yangheng, WILUS (Wilus Institute of Standards & Technology), U-Tel and CEST (Center for Embedded Software Technology).