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Sample records for kyu kochoryoku koban

  1. Development of TS590MPa grade high tensile strength steel for automotive anti-collision parts; Shogeki kyushuyo 590MPa kyu kochoryoku koban no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    Miura, K; Takagi, S; Furukimi, O; Hira, T; Obara, T [Kawasaki Steel Corp., Tokyo (Japan); Tanimura, S [University of Osaka Prefecture, Osaka (Japan)

    1997-10-01

    The effects of strain rate on the deformation behavior of steels were investigated to find the most appropriate micro-structure of steel for anti-crash parts of automobiles, such as front-side-members. The dual phase steel absorbed a higher amount of energy during dynamic deformation than other steels with the same static yield strength. The increase of volume fraction of the austenite phase in the dual phase steel deteriorates the dynamic deformation behavior. The FEM analysis for crash test of HAT-sectional sheet box also showed the superior performance of the dual phase steel. 4 refs., 7 figs., 1 tab.

  2. Mishima jo ha kyu

    Directory of Open Access Journals (Sweden)

    Matteo Casari

    2012-01-01

    Full Text Available Abstract – IT La grandezza artistica di Mishima si è espressa attraverso una eterogenea gamma di linguaggi tra i quali il teatro – nella drammaturgia ma anche nella saggistica, regia, recitazione e direzione di compagnia – ha avuto un ruolo di primo piano. Al pari di un uomo di scena Mishima inaugura, a partire dagli anni ’50, un processo di attenzione al proprio corpo come possibile, anzi necessario, veicolo di estrinsecazione etico-estetica tanto da poter istituire l’equazione corpo-teatro quale snodo profondo del suo processo creativo. Il corpo sognato e ottenuto da Mishima attraverso l’addestramento nel kendo, in altre arti marziali e nel body building si conformava ad un ideale estetico di matrice greco-classica assai lontano dal corpo teatrale nipponico. Il corpo come luogo di elaborazione e strumento di espressione autentica da realizzare con impegno, però, lo legano profondamente alle esperienze nascenti – tra gli anni ’50 e ’60 – delle avanguardie teatrali giapponesi. La metafora teatrale è spesso usata nella lettura critica del Mishima uomo e artista con accezione deteriore: un personaggio che dà spettacolo di sé con ripetute provocazioni tra le quali il suicidio del 25 novembre 1970 non sarebbe che l’esempio ultimo e più estremo. La costruzione di sé come personaggio, invece, sembrerebbe corrispondere ad una ben più profonda e meditata necessità di comporre la propria vita in una sapiente messa in scena di classica perfezione: i principi della scansione ritmico formale del jo ha kyu, pilastro teorico del teatro no codificato da Zeami tra XIV e XV secolo, offrono un valido modello di riferimento. Abstract – EN Mishima’s artistic greatness has been expressed through a diverse range of languages among wich theater – in dramaturgy as well as in written essays, as a director, performer and in company direction – played a central role. As a true front-man, Mishima – starting from the 50’s

  3. Smart Kote Glove for Assessment of Scoring Parameters of Dan and Kyu Grade Kendokas

    Directory of Open Access Journals (Sweden)

    Kwangyul Jeong

    2018-02-01

    Full Text Available Kendo is one of the most ancient swordsmanship arts in Japan. The aims of this study are to develop and test an innovative smart Kote glove for assisting the Kendoka to distinguish scoring from non-scoring Kote (wrist strikes. An in-house developed pressure sensing platform was utilized to develop the smart Kote glove. Ten kendo practitioners, comprising of five Dan (black belts equivalent and five Kyu (lower level/ungraded of both genders, participated in this study. The results showed significant differences between Dan and Kyu participants in both accuracy and sharpness of the strikes. Dan grade participants showed higher percentage of hitting the target comparing to Kyu grade (92% and 75% respectively. The percentage of scoring was also significantly higher in Dan (78% than in Kyu (37% grades. The average impact force of scoring by Dan grade (1159 ± 379 N was higher than by Kyu grade (852 ± 429 N.

  4. Development of high strength steel sheets for crashworthiness; Shototsu anzen`yo kokyodo usu koban no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    Fukui, K; Yamamoto, M; Mizui, N; Hirose, Y; Kojima, K [Sumitomo Metal Industries, Ltd. Osaka (Japan)

    1997-10-01

    For frontal or rear members of automotive body, the most suitable high strength steel was investigated. Dynamic tensile test at strain-rate of 2000/s and crash test of hat-shape column at 4m/s were conducted for steel sheets with tensile strength ranging from 290 to 980 MPa. Dynamic tensile strength increases with increasing static one but the ratio of dynamic tensile strength to static one decreases. Tensile strength remarkably affects crash energy absorption of column and TRIP steel is superior to other steels with same tensile strength. 7 refs., 16 figs., 1 tab.

  5. Buckling model of longitudinal reinforcing bars under reverse cyclic load; Koban kurikaeshi kajuka ni okeru chukin no zakutsu model

    Energy Technology Data Exchange (ETDEWEB)

    Murayama, Y.; Suda, K.; Ichinomiya, T.; Shinbo, H. [Kajima Corp., Tokyo (Japan)

    1994-10-31

    For RC (reinforced concrete) columns such as towers of long-span cable-stayed bridges or high-rise piers, there is desired development of an analytical method including a method of arranging reinforcing bars for increasing their ductility against strong earthquake motion. For this, it is necessary to investigate their characteristics after their being rendered to maximum load and their final states, and hence there must be newly investigated the properties of a plastic hinge formed on the bottom of the column, particularly determination of the buckling point of reinforcing bars and a hysteresis model after the buckling. In this study, there is developed a direct method of measuring the stress of reinforcing bars embedded in a model specimen which is conventionally difficult to be measured, and there is investigated the stress-strain hysteresis of the bars before and after the buckling thereof. The principle of the method of measuring the stress is such that only a local minimum portion of objective reinforcing bars is rendered to rf quenching, and a distortion gauge is sticked to the center of the quenching. This is based upon a fact that that portion keeps a linear relationship between the stress and the strain even if a host material is yielded. On the basis of an experimental result, a mechanism of buckling of these bars is clarified and a buckling model of the reinforcing bars at the plastic hinge. 6 refs., 15 figs., 2 tabs.

  6. FY1995 optoelectronic devices and circuits for terabit class network; 1995 nendo terabit kyu network yo hikari denshi device kairo

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    The necessary technology realizing Terabit class optical network is the signal multiplexing both in temporal and spectral domains. Controllability of ultrafast optoelectronic systems is therefore the priority issue. Specifically we chose semiconductor lasers as the key devices. The methodology for performance improvement and the creation of novel functionality are investigated. Firstly compression of semiconductor laser pulse reached the world record of 65 femto second. Secondly a proposal was made to control mode locked semiconductor lasers via subharmonic synchronization and a substantial phase noise reduction was demonstrated. Thirdly a new technology was developed to realize broadband anti-reflection coating on semiconductor laser amplifier facet, bringing about significant performance improvement. To compensate the dispersion induced signal distortion a broadband semiconductor laser amplifier four wave mixing was analyzed and also demonstrated experimentally. (NEDO)

  7. Required grades of hull steel plates in consideration of fracture toughness; Hakai jinsei wo koryoshita sentaiyo koban shiyo kubun ni kansuru ichikosatsu

    Energy Technology Data Exchange (ETDEWEB)

    Yajima, H; Yamamoto, M; Ogaki, Y [Hiroshima University, Hiroshima (Japan). Faculty of Engineering

    1997-10-01

    This paper discusses the required grades of hull steel plates based on the steel ship rule of Nippon Kaiji Kyokai (NK). The minimum value of the allowable crack length in NK rule (critical safety crack length at 0degC just before brittle unstable crack causing fatal fracture) was estimated. In the case where the estimated crack tip exists in a matrix, the crack length was a minimum of 200-210mm, while nearly 60mm in a fusion line at high-heat-input welded joint. The allowable crack lengths estimated from a specified value in the NK rule were fairly different. The allowable crack length at 0degC was also estimated from the minimum value in V-notch Charpy impact test. The private proposal on the required grades of hull steel plates in consideration of fracture toughness was discussed. Thirty-five percent of crack lengths found in real ships is 100mm or less, however, cracks of 250-400mm long are frequently found suggesting the allowable crack length of 400mm. The required grade integrally considering required values and design conditions is demanded to secure the reliability of hull strength. 5 refs., 5 figs., 2 tabs.

  8. Current limiting experiment with 600 V/100A rectification type superconducting fault current limiter; 600 V-100A kyu seiryugata chodendo genryuki no genryu shiken

    Energy Technology Data Exchange (ETDEWEB)

    Matsuzaki, J.; Tsurunaga, K.; Urata, M. [Toshiba Corp., Tokyo (Japan); Okuma, T.; Sato, Y.; Iwata, Y. [Tokyo Electric Power Co., Inc., Tokyo (Japan)

    1999-06-07

    The rectification type current limiter with the current-limiting system of the new type which combined rectifier circuits with the direct current reactor has been proposed until now, and it has succeeded in the current-limiting test by the normal conduction reactor by the 6.6kV class model vessel. Since the loss of the conductor becomes fundamentally the zero, in the same current limiter, by using superconducting wire rod, because direct current always flows in the reactor, making into low-loss becomes possible. In this report, this paper describes cut-off characteristic of 600V/100A rectification type superconductive current limiter using the metal type superconductive conductor. (NEDO)

  9. 50-kg large-size cold crucible levitation melting apparatus; Teibu shuto kino wo motsu 50kg kyu korudo kurushiburu fuyo yokai shochi no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    Hayashi, S. [Fuji Electric Co. Ltd., Tokyo (Japan); Tadano, E. [Fuji Electric Corporate Research and Development Ltd., Kanagawa (Japan)

    1997-06-25

    With an increase in the degree of industrial techniques and the development of high-technology products in recent years, it has been demanded that the quality of high-purity metal materials be improved. The levitation melting method is a new melting method in which a metal material is melted by induction heating while the material is levitated in a water-cooled copper crucible. This paper made clear the principle of the levitation melting method and describes some problems in the development of a 50 kg-class large-capacity levitation melting apparatus and solutions to the problems. The development of a 50 kg-class levitation melting apparatus having a bottom discharging function was carried out on the basis of the results of discussion of the above-mentioned problems, and the noncontact melting of 50 kg cast iron and the noncontact bottom discharging of molten iron succeeded. This enabled the noncontact process of from the melting of a high-purity metal material and a metal of a high melting point to the casting of the molten metal. Since a continuous casting apparatus is provided under the crucible, the casting of an ingot and a rod material becomes possible. When a metal material is levitation-melted in superhigh vacuum, production of a superhigh-purity metal and a new metal material can be attained since the material is not contaminated by the atmosphere. 9 refs., 11 figs., 4 tabs.

  10. 1998 Annual Study Report. Standardization of corrosion resistance testing/evaluation methods for coated steel sheets; 1998 nendo seika hokokusho. Hyomen shori koban no taishokusei shiken hyoka hoho no hyojunka

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    In order to develop the evaluation methods for reappearing corrosion characteristics of coated steel sheets in a short time, acid rain composition and artificial acid rain composition for the accelerated test were studied, and the cyclic corrosion tests were conducted. The literature survey shows that the main ionic species present in acid rain are Ca{sup 2+}, Mg{sup 2+}, Na{sup +}, K{sup +}, NH{sub 4}{sup +}, SO{sub 4}{sup 2-}, NO{sub 3}{sup -}, and Cl{sup -}, of which the acid rain components are SO{sub 4}{sup 2-} and NO{sub 3}{sup -}, their equivalent ratio (NO{sub 3}{sup -}/ SO{sub 4}{sup 2-}) in the Far Eastern area being 0.2 to 0.3. Therefore, the solution specified by ASTM 1141 is diluted 30 times with water to prepare the base solution for the accelerated tests, where its acidity is adjusted with a mixed acid of NO{sub 3}{sup -}/ SO{sub 4}{sup 2-} = 0.2 to 0.3 (pH: 3.0 to 4.0). Two sets of preliminary cyclic corrosion tests were conducted, one involving acid rain spraying, drying and humidification in this order, and the other acid rain spraying, humidification and drying. Analysis of the test data indicates that difference between these test cycles in corrosion rate is within a deviation range caused by different testing tools. Therefore, the former condition is adopted as the basis for the accelerated tests, because of its smaller deviation caused by different testing tools. (NEDO)

  11. Relationship between surface structure of silicon containing steel and adhesion of hot dip galvanized coating; Si gan'yu koban no hyomen kozo to yoyu aen mekki micchakuseino kankei

    Energy Technology Data Exchange (ETDEWEB)

    Tsuchiya, Y.; Hashimoto, S.; Ishibashi, Y. [Kokan Keisoku K.K., Kawasaki (Japan); Inagaki, J. [NKK Corp., Tokyo (Japan); Fukuda, Y. [Shuibuoka University, Shizuoka (Japan)

    2000-06-01

    The surface of the annealed steel and the exfoliated interface of the coating for the hot dip galvanized Si containing steel sheets was characterized by using SEM (Scanning Electron Microscope), AES (Auger Electron Spectroscopy) and TEM (Transmission Electron Microscopy). The adhesion of the coatings have depended on the Si content of the steel. It have been found that MnSiO{sub 3} particles are formed at the surface of the annealed steels having high Si content and that two types of grain having different distribution of the oxide exist in the steels. Large oxide particles have been formed in one type of grain and small particles are formed in the other type of grain. The different type of Fe-Zn alloy are formed on two types of grains. It have been observed that the oxide particles exist at the interface of exfoliated coatings after the adhesion test for the steels with high Si content. The distribution of the oxide particles observed at the bottom of the exfoliated coating is quite similar to that of the surface oxide of the annealed steel. From these results, the exfoliation of the coating has initiated at the oxide particles of the steel surface that has been not reduced during the hot dip galvanizing. (author)

  12. Corrosion resistance and protection mechanism of hot-dip Zn-Al-Mg alloy coated steel sheet under accelerated corrosion environment; Yoyu Zn-Al-Mg kei gokin mekki koban no sokushin fushoku kankyoka ni okeru taishokusei toi boshoku kiko

    Energy Technology Data Exchange (ETDEWEB)

    Komatsu, A.; Izutani, H.; Tsujimura, T.; Ando, A.; Kittaka, T. [NKK Corp., Tokyo (Japan)

    2000-08-01

    Corrosion behavior of hot-dip Zn-6%Al 0-3%Mg alloy coated steel sheets in cyclic corrosion test (CCT) has been investigated. The corrosion resistance was improved with increasing Mg content in the coating layer, and the highest corrosion resistance was observed at 3% Mg. In Zn-6%Al-3%Mg alloy coated steel sheet, the formations of zinc carbonate hydroxide and zinc oxide were suppressed for longer duration compared with Zn-0.2%Al and Zn-4.5%Al-0.l%Mg alloy coated steel sheets. As a result, zinc chloride hydroxide existed stable on the surface of the coating layer. From the polarization behaviors in 5% NaCl aqueous solution after CCT, it was found that the corrosion current density of Zn-6%At-3%Mg alloy coated steel sheet was much smaller than those of Zn-0.2%Al and Zn-4.5%Al-0.1%Mg alloy coated steel sheets. As zinc carbonate hydroxide and zinc oxide had poor adhesion to the coating layer and had porous structures, these corrosion products were considered to have little protective action for the coating layer. Therefore, it was concluded that Mg suppressed the formation of such nonprotective corrosion products. resulting in the remarkable improvement of corrosion resistance. (author)

  13. Operation test for 200-kW class internally improved MCFC stacks having achieved 5000 hours; 200kW kyu naibu kaishitsu gata MCFC sutakku unten shiken 5,000 jikan tassei

    Energy Technology Data Exchange (ETDEWEB)

    Hashino, K. [Kansai Electric Power Co. Inc., Osaka (Japan)

    2000-03-10

    The operation test for 200-kW class internally improved MCFC stacks being performed at the Amagasaki fuel cell power generation testing plant of Kansai Electric Power Co., Inc. has achieved on January 22, 2000 five thousand hours, the original test time target. Temperature raising has begun on June 18 last year, and the first power generation was carried out on June 30. Since then the operation has continued smoothly at near rated output, and the test was completed nearly as planned without experiencing any trouble caused by Y2K problem. This research is being carried out as the research work shared by the Molten Carbonate Fuel Cell Power Generation System Technology Research Association (MCFC Research Association) based on the research commissioning from NEDO as part of the New Sunshine Project. After the confirmation of the initial performance, verification of the carbon dioxide self-sustaining operation, and the property evaluation test of every 500 hours are going smoothly. The intention hereafter is to achieve 5,000 hours as the power generation time, with the schedule to reduce the stack temperature in the middle of February, and cease the operation. As of January 25, the amount of power generated reached 1,089 MWh. (NEDO)

  14. Infectious Disease Risk and Vaccination in Northern Syria after 5 Years of Civil War: The MSF Experience

    Science.gov (United States)

    de Lima Pereira, Alan; Southgate, Rosamund; Ahmed, Hikmet; O’Connor, Penelope; Cramond, Vanessa; Lenglet, Annick

    2018-01-01

    Introduction: In 2015, following an influx of population into Kobanê in northern Syria, Médecins Sans Frontières (MSF) in collaboration with the Kobanê Health Administration (KHA) initiated primary healthcare activities. A vaccination coverage survey and vaccine-preventable disease (VPD) risk analysis were undertaken to clarify the VPD risk and vaccination needs. This was followed by a measles Supplementary Immunization Activity (SIA). We describe the methods and results used for this prioritisation activity around vaccination in Kobanê in 2015. Methods: We implemented a pre-SIA survey in 135 randomly-selected households in Kobanê using a vaccination history questionnaire for all children Syria. The VPD Risk Analysis prioritised measles, Haemophilus Influenza type B (Hib) and Pneumococcus vaccinations. In the measles SIA, 3410 children aged 6-59 months were vaccinated. The use of multiple small vaccination sites to reduce risks associated with crowds in this active conflict setting was noted as a lesson learnt. The post-SIA survey estimated 82% (95%CI: 76.9-85.9%; n=229/280) measles vaccination coverage in children 6-59 months. Discussion: As a result of the conflict in Syria, the progressive collapse of the health care system in Kobanê has resulted in low vaccine coverage rates, particularly in younger age groups. The repeated displacements of the population, attacks on health institutions and exodus of healthcare workers, challenge the resumption of routine immunization in this conflict setting and limit the use of SIAs to ensure sustainable immunity to VPDs. We have shown that the risk for several VPDs in Kobanê remains high. Conclusion: We call on all health actors and the international community to work towards re-establishment of routine immunisation activities as a priority to ensure that children who have had no access to vaccination in the last five years are adequately protected for VPDs as soon as possible. PMID:29511602

  15. Infectious Disease Risk and Vaccination in Northern Syria after 5 Years of Civil War: The MSF Experience.

    Science.gov (United States)

    de Lima Pereira, Alan; Southgate, Rosamund; Ahmed, Hikmet; O'Connor, Penelope; Cramond, Vanessa; Lenglet, Annick

    2018-02-02

    In 2015, following an influx of population into Kobanê in northern Syria, Médecins Sans Frontières (MSF) in collaboration with the Kobanê Health Administration (KHA) initiated primary healthcare activities. A vaccination coverage survey and vaccine-preventable disease (VPD) risk analysis were undertaken to clarify the VPD risk and vaccination needs. This was followed by a measles Supplementary Immunization Activity (SIA). We describe the methods and results used for this prioritisation activity around vaccination in Kobanê in 2015. We implemented a pre-SIA survey in 135 randomly-selected households in Kobanê using a vaccination history questionnaire for all children Syria. The VPD Risk Analysis prioritised measles, Haemophilus Influenza type B (Hib) and Pneumococcus vaccinations. In the measles SIA, 3410 children aged 6-59 months were vaccinated. The use of multiple small vaccination sites to reduce risks associated with crowds in this active conflict setting was noted as a lesson learnt. The post-SIA survey estimated 82% (95%CI: 76.9-85.9%; n=229/280) measles vaccination coverage in children 6-59 months. As a result of the conflict in Syria, the progressive collapse of the health care system in Kobanê has resulted in low vaccine coverage rates, particularly in younger age groups. The repeated displacements of the population, attacks on health institutions and exodus of healthcare workers, challenge the resumption of routine immunization in this conflict setting and limit the use of SIAs to ensure sustainable immunity to VPDs. We have shown that the risk for several VPDs in Kobanê remains high. We call on all health actors and the international community to work towards re-establishment of routine immunisation activities as a priority to ensure that children who have had no access to vaccination in the last five years are adequately protected for VPDs as soon as possible.

  16. Byen prisme

    DEFF Research Database (Denmark)

    Breitenbauch, Henrik Ø.; Winther, Mark; Jakobsen, Mikkel Broen

    Aleppo, Mosul, Kobane, Palmyra, Fallujah, Raqqa og Ramadi. Listen over byer, hvor der kæmpes eller er blevet kæmpet i Irak og Syrien, er lang. Kampen mod ISIL og den syriske borgerkrig er væsentlige eksempler på, at krigen og byerne i stigende grad er sammenhængende temaer. Verdens befolkningstal...

  17. Fiscal 1997 report on the results on the international standardization R and D. Development of chemical methods to analyze/evaluate metallic coatings of surface treated steel coating sheets; 1997 nendo seika hokokusho kokusai hyojun soseigata kenkyu kaihatsu. Hyomen shori koban mekkiso no kagaku bunseki hyoka hoho no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    The paper studied the international standardization of the chemical analysis method and glow discharge optical emission spectrometry. Chemical composition and coating thickness (g/m{sup 2}) of 14 kinds of specimens including alloy coatings and organic coating with zinc and aluminum as base were analyzed by the above-mentioned methods to examine the relation between the both. As the chemical analysis method, used was inductively coupled plasma atomic emission spectrometry. To study the relation between the methods, it was found to be necessary to recognize morphology at the boundary between the coating and base steel using, for example, scanning electron microscope (SEM) and electro-probe micro-analysis (EPMA). To measure traceability of the analysis method, with the chemical analysis method as a judgement method, it is necessary to make reference materials by coating materials, to use the calibration graph confirmed by the materials and to adopt the glow discharge optical emission spectrometry. On the basis of such way of thinking, drafts were worked out for the international standardization of the chemical analysis method and glow discharge optical emission spectrometry. 7 refs., 117 figs., 33 tabs.

  18. Comparative Strategic Cultures Curriculum Project: Assessing Strategic Culture as a Methodological Approach to Understanding WMD Decision-Making by States and Non-State Actors

    Science.gov (United States)

    2006-10-31

    VHS video, 90 min., (Arlington: Public Broadcasting Service, 2003). Shiri, DVD, 125 min., (Seoul: Kang Je-Kyu Film Co. Ltd., Samsung Entertainment...export-led economic expansion of the Asian tigers (South Korea, Malaysia , Singapore, Thailand, and Indonesia) and the extraordinary trade performance...DVD, 125 min., (Seoul: Kang Je-Kyu Film Co. Ltd., Samsung Entertainment, 2003). Additional Readings “Anti-Kim Front: DPRK Military May Revolt

  19. Development of hot water utilizing power plant in fiscal 1999. Development of binary cycle power plant (Development of 10-MW class plant); 1999 nendo nessui riyo hatsuden plant to kaihatsu. Binary cycle hatsuden plant no kaihatsu (10MW kyu plant no kaihatsu)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-03-01

    With an objective to utilize effectively middle to high temperature hot water type geothermal resources, R and D has been performed on a downhole pump-applied binary cycle power plant which exchanges heat energy with a secondary media in a heat exchanger, and generates electric power. This paper summarizes the achievements in fiscal 1999. This fiscal year has installed an operation control device and made partial modification therein for the hot water system testing device installed in the previous fiscal year, which was followed by test operation. Having been performed in addition were the installation of cooling water collection pumps, improvement of water storage tanks, modification of piping for injection of downhole pump cooling water, inspection of high-temperature cooling device and low-temperature cooling device, and discussions on deposits onto the downhole pumps. Furthermore, an environmental impact survey has performed measurements of precipitation, river flow rates, thermal spring, spring water, noise, and groundwater fluctuation. A survey was also carried out on transplantation of precious plants. In the single and overall test operation of the hot water system testing device, normal operation was identified. However, the operation had to be suspended because of a trouble in the downhole pump. (NEDO)

  20. 1998 Annual Study Report. Research and development of solid polymer type fuel cells (Development of techniques for power generation systems and several tens kW class, distributed power source systems); 1998 nendo seika hokokusho. Kotai kobunshigata nenryo denchi no kenkyu kaihatsu (hatsuden system gijutsu no kaihatsu / koden'atsugata su 10kW kyu bunsan dengen system no kaihatsu)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    The cells are tested using a CO-containing synthetic reforming gas in 1998, to verify the long-term characteristics of the solid polymer type fuel cells. The cells, equipped with the anode catalyst developed therefor, are tested for extended periods, to confirm the performance and stability in the synthetic gas flow. For development of the catalyst, the optimum content of Ru in the Pt and Ru alloy composition is determined. For the cell tests, the single- and 3-cell units are tested for extended periods. For verification of commercial viability of the stacked cell systems, the cell-humidifying techniques are developed, which can uniformly humidify each cell in the stacked unit with a number of cells, after investigating the effects of temporal changes in water permeability, pretreatment conditions and film thickness. These techniques are used to develop and operate a 10kW, stacked cell unit, which successfully generates power of 10.6 kW at the rated current density, exceeding the target of 10 kW. For development of design bases for compact fuel treatment system, the techniques which allow reduction of CO concentration to 10 ppm or less at high repeatability are developed. (NEDO)

  1. FY 2000 report on the development of hydrothermal use power plant, etc. Development of the binary cycle power plant (Development of a 10MW class plant); 2000 nendo Nessui riyo hatsuden plant tou kaihatsu. Bainari cycle hatsuden plant no kaihatsu - 10MW kyu plant no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-01-01

    For the purpose of developing a 10MW class demonstrative plant for geothermal binary power generation, the R and D were carried out, and the results obtained from FY 1995 to FY 1999 were summed up. In the interim evaluation made in July 1994, study was to be phasedly proceeded with for the main three systems (hydrothermal system, medium system and power generation system) which compose the 10MW class binary cycle power plant. The test on the hydrothermal system was started in FY 1995. In the R and D, the following were conducted for evaluation: design/manufacture/installation of the test device for the hydrothermal system, manufacture of demonstrative downhole pump (DHP) No.3 and test at plant, test on the hydrothermal system. As to the turbine working medium suitable for binary power plant, the specified freon/substitute freon have been used, but it seems that hydrocarbons such as butane and pentane can be effective in future. In the study of the economical efficiency, it was pointed out that for the commercialization, it is important to improve durability of DHP and further reduce the cost of DHP equipment and cost of repairs. (NEDO)

  2. Reports on 1977 result of research. Investigation for selecting site location of pilot plant for 7,000Nm{sup 3}/day class high calorie gasification; 1977 nendo sunshine keikaku ni kakawaru plant kenkyu kaihatsu seika hokoku. 7,000Nm{sup 3}/nichi kyu kokarori gas ka pilot plant yochi no ricchi sentei chosa

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1978-03-20

    A report was made on the result of investigation for selecting a suitable site for a coal gasification pilot plant. The high calorie gasification plant under the Sunshine Project is scheduled to have a parallel operation of two methods. It could be decided on one only method depending on the future studies. One is the 'water gasification method' using coal only as the raw material, with hydrogen gas added to contrive methanization. The other is the 'hybrid gasification method' using mixed slurry of powdered coal and heavy oil as the raw material, with oxygen supplied to it to form a clean gas. The sites proposed for the pilot plant are the cities of Yubari, Iwaki, Kita-Ibaraki, Tagawa, Iizuka and Imari. The items for assessment of cost effectiveness are the expenses of development of a site, road construction, removal of existing obstacles, plant construction, power receiving equipment construction, irrigation supply facilities construction, wastewater treatment system construction, ash discharging system construction, transportation, and supply/processing-related maintenance. As a result of the assessment, Iwaki city was picked up as the area almost free from drawbacks to cost effectiveness. (NEDO)

  3. 1998 Annual Study Report. Research and development of solid polymer type fuel cells (Development of techniques for power generation systems and several tens kW class, distributed power source systems); 1998 nendo seika hokokusho. Kotai kobunshigata nenryo denchi no kenkyu kaihatsu (hatsuden system gijutsu no kaihatsu / koden'atsugata su 10kW kyu bunsan dengen system no kaihatsu)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    The cells are tested using a CO-containing synthetic reforming gas in 1998, to verify the long-term characteristics of the solid polymer type fuel cells. The cells, equipped with the anode catalyst developed therefor, are tested for extended periods, to confirm the performance and stability in the synthetic gas flow. For development of the catalyst, the optimum content of Ru in the Pt and Ru alloy composition is determined. For the cell tests, the single- and 3-cell units are tested for extended periods. For verification of commercial viability of the stacked cell systems, the cell-humidifying techniques are developed, which can uniformly humidify each cell in the stacked unit with a number of cells, after investigating the effects of temporal changes in water permeability, pretreatment conditions and film thickness. These techniques are used to develop and operate a 10kW, stacked cell unit, which successfully generates power of 10.6 kW at the rated current density, exceeding the target of 10 kW. For development of design bases for compact fuel treatment system, the techniques which allow reduction of CO concentration to 10 ppm or less at high repeatability are developed. (NEDO)

  4. Development of hot water utilizing power plant in fiscal 1998. Development of a binary cycle power generation plant (development of a 10-MW class plant); 1998 nendo nessui riyo hatsuden plant nado kaihatsu. Binary cycle hatsuden plant no kaihatsu (10MW kyu plant no kaihatsu)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    This paper summarizes the achievements in fiscal 1998 on developing a 10-MW geothermal power plant in the Hohi-Sugawara area being a representative area of middle-to-high temperature hot water resources. In designing the plant, domestic and overseas surveys were carried out on media suitable for binary cycle power plants, thermal cycle characteristics, construction cost, environmental effects, safety, operation, maintenance and control. Latest technologies were also surveyed and analyzed. The plant construction performed development construction around the testing devices, new construction of a plant control room building, constructions for installing electrical machines including the hot water system testing devices, river water intake facility construction, and cooling water intake facility installing construction. The environmental effect investigation included investigations on rain falls, river flow rates, hot springs, spring water, monitoring during the construction, and the state of transplantation of precious plants, and observation on groundwater variation. In verifying the geothermal water pumping system, factory tests were carried out on DHP3 demonstration machine which couples the pump section of a down-hole pump with the motor section, whose performance and functions were verified. (NEDO)

  5. Achievement report for fiscal 1998. Research and development of polymer electrolyte fuel cell module (Development of 10kW-class transportable power source system of high current density type); 1998 nendo seika hokokusho. Kotai kobunshigata nenryo denchi no kenkyu kaihatsu, kodenryu mitsudogata 10kW kyu kahangata dengen system no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    For the development by the end of fiscal 2000 the above-named system which will operate on methanol/air (normal atmospheric pressure) yielding 0.3W/cm{sup 2} or more, efforts are exerted about a high-lamination type PEFC (polymer electrolyte fuel cell) module and a lamination type methanol reformer, this project carried over from fiscal 1997. In relation with the PEFC module, platinum loading was reduced (by 60% from the amount in fiscal 1997) by catalytic layer improvement, cell characteristics were improved, continuous load imposition was performed using a reformed simulation gas, life test was conducted consisting of frequent starts and stops, lamination was built using shaping separators, and a 2kW-class stack was built and evaluated for performance. Next to come is a test run of a 5kW-class stack. In relation with the lamination type methanol, element components were tested. A reformer section and a catalytic combustion section were designed, manufactured, and tested, and a vaporizer section and a CO reduction section were evaluated for performance and life. A 2kW-rate lamination type methanol reformer was designed and built by integrating the said element components, and was subjected to a test run for performance evaluation. (NEDO)

  6. Fiscal 1997 development of the geothermal water use power plant, etc. Development of the binary cycle power plant (10MW class plant); 1997 nendo nessui riyo hatsuden plant nado kaihatsu. Binary cycle hatsuden plant no kaihatsu (10MW kyu plant no kaihatsu)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    A R and D was conducted with the aim of using medium-/high-temperature hot water type geothermal resources. In fiscal 1997, fabrication of geothermal water system testing equipment and geothermal water production/reduction piping installation work were conducted, and an environmental effect survey and ground water variation observation were carried out. Moreover, pumps to pump up geothermal water were fabricated. In the fabrication of a pump for No. 3 demonstration plant, the following improvements were made. Concerning the inlet undersea bearing, the shapes related to it were so reformed that external water feeding in the initial run can be done. Relating to the protection of the thrust bearing half load side friction face, a spring was added to the face so that it was structured to give preload. As a method to install a casing covering board, adopted was a band installation method which is easy in handling. The number of instrumentation cables was reduced. As to cables for downhole pumps, studied were methods of connection, etc. of connection portions of the motor connector and instrumentation cable. Moreover, purifying/regeneration facilities of the downhole pump bearing oil were fabricated and tested. 85 figs., 57 tabs.

  7. Reports on 1977 result of research. Investigation for selecting site location of pilot plant for 7,000Nm{sup 3}/day class high calorie gasification; 1977 nendo sunshine keikaku ni kakawaru plant kenkyu kaihatsu seika hokoku. 7,000Nm{sup 3}/nichi kyu kokarori gas ka pilot plant yochi no ricchi sentei chosa

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1978-03-20

    A report was made on the result of investigation for selecting a suitable site for a coal gasification pilot plant. The high calorie gasification plant under the Sunshine Project is scheduled to have a parallel operation of two methods. It could be decided on one only method depending on the future studies. One is the 'water gasification method' using coal only as the raw material, with hydrogen gas added to contrive methanization. The other is the 'hybrid gasification method' using mixed slurry of powdered coal and heavy oil as the raw material, with oxygen supplied to it to form a clean gas. The sites proposed for the pilot plant are the cities of Yubari, Iwaki, Kita-Ibaraki, Tagawa, Iizuka and Imari. The items for assessment of cost effectiveness are the expenses of development of a site, road construction, removal of existing obstacles, plant construction, power receiving equipment construction, irrigation supply facilities construction, wastewater treatment system construction, ash discharging system construction, transportation, and supply/processing-related maintenance. As a result of the assessment, Iwaki city was picked up as the area almost free from drawbacks to cost effectiveness. (NEDO)

  8. FY 1999 Results of research and development project for polymer electrolyte fuel cells (PEFCs). Development of high current density type 10kW class portable power source systems; 1999 nendo kotai kobunshigata nenryo denchi no kenkyu kaihatsu seika hokokusho. Kodenryu mitsudogata 10kW kyu kahangata dengen system no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    Described herein are the FY 1999 results of the research and development project aimed at development of multi-stacked PEFC modules and plate-stack type methanol reformers, and researches on portable power source systems, for development of methanol-air 10kW class (over 0.3W/cm{sup 2}) PEFC systems for portable use by the end of the FY 2000. The programs for the multi-stacked PEFC modules include improvement of tolerance against CO by improvement of catalyst bed and gas passage structures; development of a multi-stacked 5kW class stack structured to prevent fuel starvation; endurance tests conducted at a constant load using a simulated methanol reformate gas; and development, on a trial basis, of the stack using a formed separator. The programs for the plate-stack type methanol reformers include development, on a trial basis, of reforming catalysts integrated with flow passages, combustion catalysts and CO oxidation catalysts, and endurance evaluation tests for the reformer elements. The researches on portable power source systems include studies on, e.g., system control/behavior and efficiency, and basic system designs. The performance and environment endurance tests are also conducted for auxiliary equipment, e.g., blowers. (NEDO)

  9. Report on the results of the FY 1999 R and D of polymer electrolyte fuel cells. Development of the power system technology (Development of high voltage several 10 kW class dispersed generation system); 1999 nendo kotai kobunshigata nenryo denchi no kenkyu kaihatsu seika hokokusho. Hatsuden system gijutsu no kaihatsu (koden'atsugata suju kW kyu bunsan dengen system no kaihatsu)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    The paper described the results of the FY 1999 development of polymer electrolyte fuel cell and several 10 kW class dispersed generation system. The humidification of the cell body is the internal humidification method in which water is directly supplied to cell, which makes the cell life long. The cooling using latent heat of vaporization of the water supplied makes the temperature distribution inside the cell face homogeneous. In the test for long life, the system was stably operated at voltage lowering speed of 11mV/1000h. The optimization of water supply structure in the stack increases the latent heat cooling amount and makes the temperature distribution inside the cell face homogeneous. The reduction of CO concentration in reformed gas is extremely important for improvement of cell performance and long-term stabilization of cell voltage. By the two-stage structure selective oxidation device, the CO concentration at inlet, 5,000 ppm, can be reduced to below 10 ppm at outlet. In the demonstrative experiment on the several 10 kW class dispersed generation system, efforts for reduction in size of structural equipment and package were made, and a possible size of 200*150*180cm was obtained. Based on the chart of 30kW class system flow, the heat material balance was analyzed, and the power generation efficiency of 40% at a.c. sending end and overall efficiency of 80% were confirmed. (NEDO)

  10. Fiscal 1996 result reports of the researches under consignment from NEDO. Developments of fuel cell technology, polymer electrolyte fuel cell, fuel cell power generation system technology, and high-voltage type several tens kW class distributed power source system; Shin energy sangyo gijutsu sogo kaihatsu kiko itaku gyomu 1996 nendo seika hokokusho. Nenryo denchi gijutsu kaihatsu, kotai kobunshigata nenryo denchi no kenkyu kaihatsu, hatsuden system gijutsu kaihatsu, koden`atsugata suju kW kyu bunsan dengen system no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    This paper precisely reports the research result on development of fuel cell technology in fiscal 1996. On verification of cell durability, the cell test result in hydrogen including CO of 100ppm using Pt-Ru catalyst as CO resistant catalyst showed that the loss percent of cell voltage decreases with an increase in Ru content. On development of stack technology, the carbon humidification plate superior in chemical stability was developed as one of the parts for layered stacks. The separator with a water- permeable carbon plate and serpentine flow fields was fabricated for highly layered stacks, and achieved the target performance in single cell power generation test. On establishment of design basis for compact fuel processor, the bench-scale test was conducted of Ru/{gamma}-Al2O3 and Pt-Ru/{gamma}-Al2O3 catalysts as advanced CO selective oxidation catalyst for CO reducers. On demonstration test for the several tens kW class stationary power plant, the system configuration of power generation plants using natural gas as fuel was studied. 106 figs., 38 tabs.

  11. FY 1999 Report on results of development of high-efficiency energy system technologies for transportation and domestic use. R and D of polymer electrolyte fuel cells, power system technologies, and several kW class domestic power systems operating at normal pressure; 1999 nendo un'yu minseiyo kokoritsu energy system gijutsu kaihatsu, kotai kobunshigata nenryo denchi no kenkyu kaihatsu, hatsuden system gijutsu kaihatsu, joatsu sadogata su kW kyu kateiyo dengen system no kaihatsu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    Described herein are the FY 1999 results of the research and development project aimed at development of fuel cell systems for power source systems suitable for domestic use. The programs for development of fuel cell body include improvement of the anode forming method for increasing its CO tolerance, enhancing cell performance at 0.5mg-metal/cm{sup 2} as the catalyst quantity to a level almost comparable to that obtainable at 0.9mg-metal/cm{sup 2}. The programs for development of the fuel supply system include studies on endurance of the elements, e.g., starting-up/shutting-down of the Ru/Al{sub 2}O{sub 3} catalyst, using a microreactor, confirming that it is serviceable for at least 1,000 hours. The natural gas reformer is developed and operated, on a trial basis, achieving stable supply of steam and fuel, and thermal efficiency of 82.7%. The operation researches include development and operation of a 1kW class module, achieving the performance surpassing the FY 1999 targets (average cell voltage: 0.70V, output: 1.27kW) with a simulated reformate gas at an air utilization rate of 20% and current density of 0.3A/cm{sup 2}. (NEDO)

  12. Proceedings – Mathematical Sciences | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    Ravi P Agarwal1 Jong Kyu Kim2 Donal O' Regan3. Department of Mathematical Sciences, Florida Institute of Technology, Melbourne, Florida 32901-6975, USA; Department of Mathematics, Kyungnam University, Masan, Kyungnam 631-701, Korea; Department of Mathematics, National University of Ireland, Galway, Ireland ...

  13. A comparative study of the effects of cone-plate and parallel-plate geometries on rheological properties under oscillatory shear flow

    CSIR Research Space (South Africa)

    Yong Song, H

    2017-11-01

    Full Text Available -1 Korea-Australia Rheology Journal A comparative study of the effects of cone-plate and parallel- plate geometries on rheological properties under oscillatory shear flow Hyeong Yong Song1, Reza Salehiyan2, Xiaolei Li1, Seung Hak Lee1 and Kyu Hyun1...

  14. Experiment list: SRX277329 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available me=Murine erythroleukemia (MEL) cells || cell line=non-induced C88 MEL cells || chip antibody=CDK9 C20 antibody (Santa Cruz Biotechno...logy, C20, sc-484) http://dbarchive.biosciencedbc.jp/kyu

  15. University Leadership during Times of Significant Transformation: A Case of Kyambogo University in Uganda

    Science.gov (United States)

    Namubiru, Gertrude; Onen, David; Oonyu, Joseph

    2017-01-01

    This study investigated how leadership was exercised at Kyambogo University [KyU] (in Uganda) during its formation that involved the merger of three tertiary institutions and the period immediately thereafter. This was regarded as a period of significant transformation at the institution. The study was prompted by the rampant strikes and protests…

  16. Cryomilling of Thermoplastic Powder for Prepreg Applications

    Science.gov (United States)

    2013-09-01

    Cryomilling of Thermoplastic Powder for Prepreg Applications by Brian Parquette, Anit Giri, Daniel J. O’Brien, Sarah Brennan, Kyu Cho, and...MD 21005-5066 ARL-TR-6591 September 2013 Cryomilling of Thermoplastic Powder for Prepreg Applications Brian Parquette and Sarah Brennan...COVERED (From - To) 1 March 2012–30 May 2013 4. TITLE AND SUBTITLE Cryomilling of Thermoplastic Powder for Prepreg Applications 5a. CONTRACT

  17. 第二の軽井沢を夢想した“観光デザイナー”松本隆治と宮崎寛愛 : 観光リスクマネジメントの観点から

    OpenAIRE

    小川, 功

    2014-01-01

    The Kitakaruizawa area is located north ofKaruizawa, a famous mountain resort in NaganoPrefecture built by foreign developers in themid-Meiji Period. Despite the resemblance inname, the former is part of Gunma Prefecture,while the latter is situated in Nagano. Kitakaruizawais one of many resorts that weredeveloped around the famous and prestigiousKyu-Karuizawa, or the original Karuizawa, inan attempt to capitalize on its high status.Among such developers, Yasujiro Tsutsumi andKasuke Hoshino, ...

  18. Nanostructuring of Aluminum Alloy Powders by Cryogenic Attrition with Hydrogen-Free Process Control Agent

    Science.gov (United States)

    2015-02-01

    Nanostructuring of Aluminum Alloy Powders by Cryogenic Attrition with Hydrogen-Free Process Control Agent by Frank Kellogg , Clara Hofmeister...Process Control Agent Frank Kellogg Bowhead Science and Technology Clara Hofmeister Advanced Materials Processing and Analysis Center...NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) Frank Kellogg , Clara Hofmeister, Anit Giri, and Kyu Cho 5d. PROJECT NUMBER 5e

  19. Impact of war on child health in northern Syria: the experience of Médecins Sans Frontières.

    Science.gov (United States)

    Meiqari, Lana; Hoetjes, Maartje; Baxter, Louisa; Lenglet, Annick

    2018-03-01

    Few data are available to evaluate the impact of Syrian war on civilian population; to describe this impact on child health, this article uses data from Médecins Sans Frontières-Operational Centre Amsterdam's activities in Tal-Abyad and Kobane cities, northern Syria (2013-2016). Data were obtained from routine medical datasets and narrative reports, for out-patient clinics, immunisation, nutritional monitoring and assessments, and in-patient care, and were analysed quantitatively and qualitatively. Infections were the largest contributor to morbidity. The proportion of war on the health of children; • Médecins Sans Frontières (MSF-OCA) has worked in northern Syria during different times since 2013. What is New • Quantitative and qualitative analysis of MSF's routine medical data and situtation reports show that one fifth of all consultations in children war, e.g. thalassemia.

  20. Aikido experience and its relation to mindfulness: a two-part study.

    Science.gov (United States)

    Lothes, John; Hakan, Robert; Kassab, Karin

    2013-02-01

    The martial art Aikido may be useful in the development of mindfulness. In this study, the authors examined the potential association of training in Aikido may have on mindfulness. The sample of Study 1 comprised 159 participants completing two empirically validated scales of mindfulness and awareness, the Kentucky Inventory of Mindfulness Skills and the Mindfulness Attention Awareness Scale. Study 2 was a longitudinal study of 20 Aikido students from beginning through 5th Kyu (approximately 9 months of training). The results from both studies show significant increases in mindfulness scores with increased Aikido training.

  1. A Highly Responsive Silicon Nanowire/Amplifier MOSFET Hybrid Biosensor

    Science.gov (United States)

    2015-07-21

    Hybrid Biosensor Jieun Lee1,2, Jaeman Jang1, Bongsik Choi1, Jinsu Yoon1, Jee-Yeon Kim3, Yang-Kyu Choi3, Dong Myong Kim1, Dae Hwan Kim1 & Sung-Jin Choi1...This study demonstrates a hybrid biosensor comprised of a silicon nanowire (SiNW) integrated with an amplifier MOSFET to improve the current response...of field-effect-transistor (FET)-based biosensors . The hybrid biosensor is fabricated using conventional CMOS technology, which has the potential

  2. Analysis list: CBP [Chip-atlas[Archive

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    Full Text Available CBP Adult,Cell line,Embryo,Larvae,Pupae + dm3 http://dbarchive.biosciencedbc.jp/kyu...shu-u/dm3/target/CBP.1.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/dm3/target/CBP.5.tsv http://dbarchive.bioscience...dbc.jp/kyushu-u/dm3/target/CBP.10.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/dm3/colo/CBP.Adul...t.tsv,http://dbarchive.biosciencedbc.jp/kyushu-u/dm3/colo/CBP.Cell_line.tsv,http://dbarchive.bioscience...dbc.jp/kyushu-u/dm3/colo/CBP.Embryo.tsv,http://dbarchive.biosciencedbc.jp/kyushu-u/dm3

  3. Analysis list: ZFX [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ZFX Blood,Neural + hg19 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/target/ZFX....1.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/target/ZFX.5.tsv http://dbarchive.biosciencedbc.jp/kyu...shu-u/hg19/target/ZFX.10.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/colo/ZFX.Blood.tsv,http://dbarchive.bioscience...dbc.jp/kyushu-u/hg19/colo/ZFX.Neural.tsv http://dbarchive.bioscience...dbc.jp/kyushu-u/hg19/colo/Blood.gml,http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/colo/Neural.gml ...

  4. Analysis list: Srf [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Srf Blood,Embryonic fibroblast,Muscle + mm9 http://dbarchive.biosciencedbc.jp/kyush...u-u/mm9/target/Srf.1.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/target/Srf.5.tsv http://dbarchive.bioscience...dbc.jp/kyushu-u/mm9/target/Srf.10.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/colo/Srf.Blood....tsv,http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/colo/Srf.Embryonic_fibroblast....tsv,http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/colo/Srf.Muscle.tsv http://dbarchive.biosciencedbc.jp/kyu

  5. Modulation of Estrogen-Depurinating DNA Adducts by Sulforaphane for Breast Cancer

    Science.gov (United States)

    2014-12-01

    system in cancers: stress response and anabolic metabolism. Front. Oncol., 2, 200. doi: 10.3389/ fonc.2012.00200. 20. Agyeman,S.A. et  al. (2012...to science education and young scientists. We look forward to working with you. Sincerely, Chuck  37 From: "Gary A. Lorigan...Drosophila," by Ki Moon Seong, Mira Yu, Kyu-Sun Lee, Young Woo Jin and Kyung J. Min, and for taking the time and effort to review this manuscript. Best

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    Full Text Available NR3C1 Blood,Bone,Breast,Liver,Others,Prostate,Uterus + hg19 http://dbarchive.biosci...encedbc.jp/kyushu-u/hg19/target/NR3C1.1.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/target/NR3C1.5.tsv http:...//dbarchive.biosciencedbc.jp/kyushu-u/hg19/target/NR3C1.10.tsv http://dbarchive.biosciencedbc.jp/kyu...shu-u/hg19/colo/NR3C1.Blood.tsv,http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/colo/NR3C1.Bone.tsv,http:...//dbarchive.biosciencedbc.jp/kyushu-u/hg19/colo/NR3C1.Breast.tsv,http://dbarchive.bi

  7. Analysis list: HSF1 [Chip-atlas[Archive

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    Full Text Available Chd8 Blood,Embryo + mm9 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/target/Chd8.1.tsv http:...//dbarchive.biosciencedbc.jp/kyushu-u/mm9/target/Chd8.5.tsv http://dbarchive.biosciencedbc.jp/kyu...shu-u/mm9/target/Chd8.10.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/colo/Chd8.Blood.tsv,http://dbarc...hive.biosciencedbc.jp/kyushu-u/mm9/colo/Chd8.Embryo.tsv http://dbarchive.bioscien...cedbc.jp/kyushu-u/mm9/colo/Blood.gml,http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/colo/Embryo.gml ...

  9. Analysis list: Men1 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Men1 Blood,Muscle,Pluripotent stem cell + mm9 http://dbarchive.biosciencedbc.jp/kyu...shu-u/mm9/target/Men1.1.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/target/Men1.5.tsv http://dbarchive.bioscience...dbc.jp/kyushu-u/mm9/target/Men1.10.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/colo/Men1....Blood.tsv,http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/colo/Men1.Muscle.tsv,http://dbarchive.bioscience...dbc.jp/kyushu-u/mm9/colo/Men1.Pluripotent_stem_cell.tsv http://dbarchive.bioscienced

  10. Analysis list: Kmt2c [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Kmt2c Embryonic fibroblast,Liver,Muscle + mm9 http://dbarchive.biosciencedbc.jp/kyu...shu-u/mm9/target/Kmt2c.1.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/target/Kmt2c.5.tsv http://dbarchive.bioscience...dbc.jp/kyushu-u/mm9/target/Kmt2c.10.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/colo/Km...t2c.Embryonic_fibroblast.tsv,http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/colo/...Kmt2c.Liver.tsv,http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/colo/Kmt2c.Muscle.tsv http://dbarchive.bioscience

  11. Analysis list: Gtf2b [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Gtf2b Blood,Cardiovascular,Liver + mm9 http://dbarchive.biosciencedbc.jp/kyushu-u/m...m9/target/Gtf2b.1.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/target/Gtf2b.5.tsv http://dbarchive.bioscience...dbc.jp/kyushu-u/mm9/target/Gtf2b.10.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/colo/Gtf2b.Blo...od.tsv,http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/colo/Gtf2b.Cardiovascular.t...sv,http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/colo/Gtf2b.Liver.tsv http://dbarchive.biosciencedbc.jp/kyu

  12. Analysis list: Pbx1 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pbx1 Embryo,Embryonic fibroblast,Muscle + mm9 http://dbarchive.biosciencedbc.jp/kyu...shu-u/mm9/target/Pbx1.1.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/target/Pbx1.5.tsv http://dbarchive.bioscience...dbc.jp/kyushu-u/mm9/target/Pbx1.10.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/colo/Pbx1....Embryo.tsv,http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/colo/Pbx1.Embryonic_fib...roblast.tsv,http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/colo/Pbx1.Muscle.tsv http://dbarchive.bioscienced

  13. Analysis list: unc-62 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available unc-62 Adult,Embryo,Larvae + ce10 http://dbarchive.biosciencedbc.jp/kyushu-u/ce10/t...arget/unc-62.1.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/ce10/target/unc-62.5.tsv http://dbarchive.bioscience...dbc.jp/kyushu-u/ce10/target/unc-62.10.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/ce10/colo/unc-62....Adult.tsv,http://dbarchive.biosciencedbc.jp/kyushu-u/ce10/colo/unc-62.Embryo.tsv,http://dbarchive.bioscien...cedbc.jp/kyushu-u/ce10/colo/unc-62.Larvae.tsv http://dbarchive.biosciencedbc.jp/kyu

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    Full Text Available nfya-1 Adult,Embryo,Larvae + ce10 http://dbarchive.biosciencedbc.jp/kyushu-u/ce10/t...arget/nfya-1.1.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/ce10/target/nfya-1.5.tsv http://dbarchive.bioscience...dbc.jp/kyushu-u/ce10/target/nfya-1.10.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/ce10/colo/nfya-1....Adult.tsv,http://dbarchive.biosciencedbc.jp/kyushu-u/ce10/colo/nfya-1.Embryo.tsv,http://dbarchive.bioscien...cedbc.jp/kyushu-u/ce10/colo/nfya-1.Larvae.tsv http://dbarchive.biosciencedbc.jp/kyu

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  1. Evaluation of silica nanoparticle toxicity after topical exposure for 90 days

    Directory of Open Access Journals (Sweden)

    Ryu HJ

    2014-12-01

    Full Text Available Hwa Jung Ryu,1,* Nak-won Seong,2,* Byoung Joon So,1 Heung-sik Seo,2 Jun-ho Kim,2 Jeong-Sup Hong,2 Myeong-kyu Park,2 Min-Seok Kim,2 Yu-Ri Kim,3 Kyu-Bong Cho,4 Mu yeb Seo,2 Meyoung-Kon Kim,3 Eun Ho Maeng,2 Sang Wook Son1 1Department of Dermatology, Korea University College of Medicine, Seoul, South Korea; 2Korea Testing and Research Institute, Gyunggi-Do, South Korea; 3Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, South Korea; 4Department of Clinical Laboratory Science, Shinheung College, Uijeongbu, South Korea *These authors contributed equally to this work Abstract: Silica is a very common material that can be found in both crystalline and amorphous forms. Well-known toxicities of the lung can occur after exposure to the crystalline form of silica. However, the toxicities of the amorphous form of silica have not been thoroughly studied. The majority of in vivo studies of amorphous silica nanoparticles (NPs were performed using an inhalation exposure method. Since silica NPs can be commonly administered through the skin, a study of dermal silica toxicity was necessary to determine any harmful effects from dermal exposures. The present study focused on the results of systemic toxicity after applying 20 nm colloidal silica NPs on rat skin for 90 days, in accordance with the Organization for Economic Cooperation and Development test guideline 411 with a good laboratory practice system. Unlike the inhalation route or gastrointestinal route, the contact of silica NPs through skin did not result in any toxicity or any change in internal organs up to a dose of 2,000 mg/kg in rats. Keywords: silica nanoparticles, toxicity, dermal route

  2. Zinc oxide nanoparticles: a 90-day repeated-dose dermal toxicity study in rats

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    Ryu HJ

    2014-12-01

    Full Text Available Hwa Jung Ryu,1,* Mu Yeb Seo,2,* Sung Kyu Jung,1 Eun Ho Maeng,2 Seung-Young Lee,2 Dong-Hyouk Jang,2 Taek-Jin Lee,2 Ki-Yeon Jo,2 Yu-Ri Kim,3 Kyu-Bong Cho,4 Meyoung-Kon Kim,3 Beom Jun Lee,5 Sang Wook Son1 1Department of Dermatology, Korea University College of Medicine, Seoul, 2Korea Testing and Research Institute, Gyunggido, 3Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, 4Department of Clinical Laboratory Science, Shinheung College, Uijeongbu, 5College of Veterinary Medicine, Chungbuk National University, Cheongju, Republic of Korea *These authors contributed equally to this work and both should be considered first authors Abstract: Zinc oxide (ZnO works as a long-lasting, broad-spectrum physical sunblock, and can prevent skin cancer, sunburn, and photoaging. Nanosized ZnO particles are used often in sunscreens due to consumer preference over larger sizes, which appear opaque when dermally applied. Although the US Food and Drug Administration approved the use of nanoparticles (NPs in sunscreens in 1999, there are ongoing safety concerns. The aim of this study was to evaluate the subchronic toxicity of ZnO NPs after dermal application according to the Organization for Economic Cooperation and Development Test Guidelines 411 using Good Laboratory Practice. Sprague Dawley rats were randomly divided into eight (one control, one vehicle control, three experimental, and three recovery groups. Different concentrations of ZnO NPs were dermally applied to the rats in the experimental groups for 90 days. Clinical observations as well as weight and food consumption were measured and recorded daily. Hematology and biochemistry parameters were determined. Gross pathologic and histopathologic examinations were performed on selected tissues from all animals. Analyses of tissue were undertaken to determine target organ tissue distribution. There was no increased mortality in the experimental group. Although there

  3. The beneficial effects of honeybee-venom serum on facial wrinkles in humans

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    Han SM

    2015-10-01

    Full Text Available Sang Mi Han,1 In Phyo Hong,1 Soon Ok Woo,1 Sung Nam Chun,2 Kwan Kyu Park,3 Young Mee Nicholls,4 Sok Cheon Pak5 1Department of Agricultural Biology, National Academy of Agricultural Science, Wanju, 2Dong Sung Pharmaceuticals Co Ltd, Seoul, 3Department of Pathology, School of Medicine, Catholic University of Daegu, Daegu, South Korea; 4Manuka Doctor Ltd, Auckland, New Zealand; 5School of Biomedical Sciences, Charles Sturt University, Bathurst, NSW, Australia Abstract: Facial wrinkles are an undesirable outcome caused by extrinsic photodamage and intrinsic aging processes. Currently, no effective strategies are known to prevent facial wrinkles. We assessed the beneficial effects of bee-venom serum on the clinical signs of aging skin. Our results show that bee-venom serum treatment clinically improved facial wrinkles by decreasing total wrinkle area, total wrinkle count, and average wrinkle depth. Therefore, bee-venom serum may be effective for the improvement of skin wrinkles. Keywords: bee venom, wrinkle, area, count, depth

  4. Readings from Asia: Memory: Troublesome, Irrepressible, and (Painfully Illuminating

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    Kyu Hyun Kim

    2013-09-01

    Full Text Available Nakano Satoshi 中野聡. 東南アジア占領と日本人: 帝国・日本の解体 [The occupation of Southeast Asia and the Japanese: Dissolution of the Japanese empire]. Itagaki Ryūta 板垣竜太, Chŏng Chi-yŏng 鄭智永, and Iwasaki Minoru 岩崎稔 eds. 東アジアの記憶の場 [The site of memories in East Asia]. "Readings from Asia" highlights significant recent scholarship published in Chinese, Korean, Japanese, and Vietnamese, in order to bring it to the attention of a wider, international readership. This issue of Cross-Currents features a review by Kyu Hyun Kim (University of California, Davis of two recent titles in Japanese: Nakano Satoshi’s 東南アジア占領と日本人: 帝国・日本の解体 and 東アジアの記憶の場, edited by Itagaki Ryūta, Chŏng Chi-yŏng, and Iwasaki Minoru. Kim recommends both books, with their “even-handed understanding of the corrective power of memory as well as its pitfalls,” to Japanese-language readers interested in the intersection of memory and history, as well as to students of modern Japanese and Korean history.

  5. FY 1999 Project of information exchange by researchers on environmental problems in the Asia-Pacific region. Report on investigations for establishing Environmental Technology Research Network in the Asia-Pacific Region; 1999 nendo Asia/Taiheiyo chiiki kankyo mondai kenkyusha koryu sokushin jigyo hokokusho. Asia/Taiheiyo chiiki kankyo gijutsu kenkyu kaihtsu network kochiku chosa

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    Described herein are the results of the FY 1999 activities for the project of information exchange by researchers on environmental problems in the Asia-Pacific region. In 1999, the 6th International Workshop was held in City of Yokkaichi, Mie Pref., with the theme (Implementation of international collaborative researches on environmental technology) at International Center for Environmental Technology Transfer, with a total of more than 50 domestic and foreign attendees actively participating in the discussion. The keynote addresses were (Use of coal and environmental improvements) presented by Mr. Yoshisada Nitta, Director at Central Research Institute of Electric Power Industry, and (Potential of clean fuel from biomass) presented by Dr. Kyu-Wan Lee of Korea Research Institute of Chemical Technology. The overseas surveys were conducted to promote the use and registration of the databases, and to identify problems by the on-the-spot investigations in Vietnam, the Philippines and Republic of Korea. At the same time, the mini-workshops were held for information exchange with the research institutes. It is keenly felt that Environmental Technology Research Network in the Asia-Pacific Region (ENTERNET-APR) works certainly in various areas, with the attendees in the last workshops serving as the key persons. (NEDO)

  6. Analysis of zinc oxide nanoparticles binding proteins in rat blood and brain homogenate

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    Shim KH

    2014-12-01

    Full Text Available Kyu Hwan Shim,1 John Hulme,1 Eun Ho Maeng,2 Meyoung-Kon Kim,3 Seong Soo A An1 1Department of Bionano Technology, Gachon Medical Research Institute, Gachon University, Sungnam-si, Gyeonggi-do, South Korea; 2Department of Analysis, KTR, Kimpo, Gyeonggi-do, South Korea; 3Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, South Korea Abstract: Nanoparticles (NPs are currently used in chemical, cosmetic, pharmaceutical, and electronic products. Nevertheless, limited safety information is available for many NPs, especially in terms of their interactions with various binding proteins, leading to potential toxic effects. Zinc oxide (ZnO NPs are included in the formulation of new products, such as adhesives, batteries, ceramics, cosmetics, cement, glass, ointments, paints, pigments, and supplementary foods, resulting in increased human exposures to ZnO. Hence, we investigated the potential ZnO nanotoxic pathways by analyzing the adsorbed proteins, called protein corona, from blood and brain from four ZnO NPs, ZnOSM20(-, ZnOSM20(+, ZnOAE100(-, and ZnOAE100(+, in order to understand their potential mechanisms in vivo. Through this study, liquid chromatography–mass spectroscopy/mass spectroscopy technology was employed to identify all bound proteins. Totals of 52 and 58 plasma proteins were identified as being bound to ZnOSM20(- and ZnOSM20(+, respectively. For ZnOAE100(- and ZnOAE100(+, 58 and 44 proteins were bound, respectively. Similar numbers of proteins were adsorbed onto ZnO irrespective of size or surface charge of the nanoparticle. These proteins were further analyzed with ClueGO, a Cytoscape plugin, which provided gene ontology and the biological interaction processes of identified proteins. Interactions between diverse proteins and ZnO nanoparticles could result in an alteration of their functions, conformation, and clearance, eventually affecting many biological processes. Keywords: brain

  7. Entrapment of curcumin into monoolein-based liquid crystalline nanoparticle dispersion for enhancement of stability and anticancer activity

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    Baskaran R

    2014-06-01

    Full Text Available Rengarajan Baskaran,1 Thiagarajan Madheswaran,2 Pasupathi Sundaramoorthy,1 Hwan Mook Kim,1 Bong Kyu Yoo1 1College of Pharmacy, Gachon University, Incheon, South Korea; 2College of Pharmacy Yeungnam University, Gyeongsan, South Korea Abstract: Despite the promising anticancer potential of curcumin, its therapeutic application has been limited, owing to its poor solubility, bioavailability, and chemical fragility. Therefore, various formulation approaches have been attempted to address these problems. In this study, we entrapped curcumin into monoolein (MO-based liquid crystalline nanoparticles (LCNs and evaluated the physicochemical properties and anticancer activity of the LCN dispersion. The results revealed that particles in the curcumin-loaded LCN dispersion were discrete and monodispersed, and that the entrapment efficiency was almost 100%. The stability of curcumin in the dispersion was surprisingly enhanced (about 75% of the curcumin survived after 45 days of storage at 40°C, and the in vitro release of curcumin was sustained (10% or less over 15 days. Fluorescence-activated cell sorting (FACS analysis using a human colon cancer cell line (HCT116 exhibited 99.1% fluorescence gating for 5 µM curcumin-loaded LCN dispersion compared to 1.36% for the same concentration of the drug in dimethyl sulfoxide (DMSO, indicating markedly enhanced cellular uptake. Consistent with the enhanced cellular uptake of curcumin-loaded LCNs, anticancer activity and cell cycle studies demonstrated apoptosis induction when the cells were treated with the LCN dispersion; however, there was neither noticeable cell death nor significant changes in the cell cycle for the same concentration of the drug in DMSO. In conclusion, entrapping curcumin into MO-based LCNs may provide, in the future, a strategy for overcoming the hurdles associated with both the stability and cellular uptake issues of the drug in the treatment of various cancers. Keywords: liquid

  8. Spotlight on nano-theranostics in South Korea: applications in diagnostics and treatment of diseases

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    Lee S

    2015-08-01

    Full Text Available Sangwha Lee,1,* Jongsung Kim,1,* Chung Wung Bark,2 Bonghee Lee,3 Heongkyu Ju,4 Se Chan Kang,5 TaeYoung Kim,6 Moon Il Kim,6 Young Tag Ko,3 Jeong-Seok Nam,3 Hyon Hee Yoon,1 Kyu-Sik Yun,1,6 Young Soo Yoon,1 Seong Soo A An,1,6 John Hulme6 1BioNano Sensor Research Center, 2Department of Electrical Engineering, Gachon University, Seongnam-si, 3Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, 4Department of Nano-Physics, 5Department of Life Science, Gachon University, 6Department of BioNano Technology, Gachon BioNano Research Institute, Seongnam-si, South Korea *These authors contributed equally to this work Abstract: From the synergistic integration and the multidisciplinary strengths of the BioNano Sensor Research Center, Gachon Bionano Research Institute, and Lee GilYa Cancer and Diabetes Institute, researchers, students, and faculties at Gachon University in collaboration with other institutions in Korea, Australia, France, America, and Japan have come together to produce a special issue on the diverse applications of nano-theranostics in nanomedicine. This special issue will showcase new research conducted by various scientific groups in Gyonggi-do and Songdo/Incheon, South Korea. The objectives of this special issue are as follows: 1 to bring together and demonstrate some of the latest research results in the field, 2 to introduce new multifunctional nanomaterials and their applications in imaging and detection methods, and 3 to stimulate collaborative interdisciplinary research at both national and international levels in nanomedicine. Keywords: cancer, imaging and therapeutics, antibacterial, disease, neurodegenerative

  9. Quantitative measurements of C-reactive protein using silicon nanowire arrays

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    Min-Ho Lee

    2008-03-01

    Full Text Available Min-Ho Lee, Kuk-Nyung Lee, Suk-Won Jung, Won-Hyo Kim, Kyu-Sik Shin, Woo-Kyeong SeongKorea Electronics Technology Institute, Gyeonggi, KoreaAbstract: A silicon nanowire-based sensor for biological application showed highly desirable electrical responses to either pH changes or receptor-ligand interactions such as protein disease markers, viruses, and DNA hybridization. Furthermore, because the silicon nanowire can display results in real-time, it may possess superior characteristics for biosensing than those demonstrated in previously studied methods. However, despite its promising potential and advantages, certain process-related limitations of the device, due to its size and material characteristics, need to be addressed. In this article, we suggest possible solutions. We fabricated silicon nanowire using a top-down and low cost micromachining method, and evaluate the sensing of molecules after transfer and surface modifications. Our newly designed method can be used to attach highly ordered nanowires to various substrates, to form a nanowire array device, which needs to follow a series of repetitive steps in conventional fabrication technology based on a vapor-liquid-solid (VLS method. For evaluation, we demonstrated that our newly fabricated silicon nanowire arrays could detect pH changes as well as streptavidin-biotin binding events. As well as the initial proof-of-principle studies, C-reactive protein binding was measured: electrical signals were changed in a linear fashion with the concentration (1 fM to 1 nM in PBS containing 1.37 mM of salts. Finally, to address the effects of Debye length, silicon nanowires coupled with antigen proteins underwent electrical signal changes as the salt concentration changed.Keywords: silicon nanowire array, C-reactive protein, vapor-liquid-solid method

  10. Measuring negative symptoms in patients with schizophrenia: reliability and validity of the Korean version of the Motivation and Pleasure Scale-Self-Report

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    Kim JS

    2016-05-01

    Full Text Available Ji-Sun Kim,1 Seon-Kyeong Jang,1 Seon-Cheol Park,2 Jung-Seo Yi,3 Joong-Kyu Park,4 Jung Suk Lee,5 Kee-Hong Choi,6 Seung-Hwan Lee1,7 1Clinical Emotion and Cognition Research Laboratory, Goyang, 2Department of Psychiatry, Inje University Haeundae Paik Hospital, Busan, 3Department of Psychiatry, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, 4Department of Rehabilitation Psychology, Daegu University, Daegu, 5Department of Psychiatry, National Health Insurance Service Ilsan Hospital, Goyang, 6Department of Psychology, Korea University, Seoul, 7Department of Psychiatry, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Republic of Korea Background: The Clinical Assessment Interview for Negative Symptoms (CAINS is one of the validated interview measures of negative symptoms in psychotic disorders. The Motivation and Pleasure Scale-Self-Report (MPSR is a self-report measure that assesses the motivation and pleasure domains of negative symptoms based on the CAINS. This study evaluated the reliability and validity of a Korean version of the MPSR.Methods: A total of 139 patients with schizophrenia completed the MPSR, CAINS, Scale for the Assessment of Negative Symptoms (SANS, Brief Psychiatric Rating Scales, Calgary Depression Scale for Schizophrenia, and other measures of trait and cognitive function.Results: The 15-item MPSR showed good internal consistency. In addition, it also had a good convergent validity with the Motivation and Pleasure subscale of the CAINS and the anhedonia/avolition subscale of the SANS. The scale was not associated with psychotic symptoms, agitation/mania, and depression/anxiety, and it showed good discriminant validity. MPSR scores were significantly correlated with Behavioral Activation System total score for trait measure.Conclusion: The Korean version of the MPSR is a notable self-report method for examining the severity of negative symptoms in schizophrenia. Keywords: Korean

  11. Effect of zinc oxide nanoparticles on dams and embryo–fetal development in rats

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    Hong J

    2014-12-01

    Full Text Available Jeong-Sup Hong,1,2 Myeong-Kyu Park,1 Min-Seok Kim,1 Jeong-Hyeon Lim,1 Gil-Jong Park,1 Eun-Ho Maeng,1 Jae-Ho Shin,3 Yu-Ri Kim,4 Meyoung-Kon Kim,4 Jong-Kwon Lee,5 Jin-A Park,2 Jong-Choon Kim,6 Ho-Chul Shin2 1Health Care Research Laboratory, Korea Testing and Research Institute, Gimpo, 2College of Veterinary Medicine, Konkuk University, Seoul, 3Department of Biomedical Laboratory Science, Eulji University, Seongnam-si, 4Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, 5Toxicological Research Division, National Institute of Food and Drug Safety Evaluation, Chungcheongbuk-do, 6College of Veterinary Medicine, Chonnam National University, Gwangju, Korea Abstract: This study investigated the potential adverse effects of zinc oxide nanoparticles (ZnOSM20[-] NPs; negatively charged, 20 nm on pregnant dams and embryo–fetal development after maternal exposure over the period of gestational days 5–19 with Sprague Dawley rats. ZnOSM20(- NPs were administered to pregnant rats by gavage at 0 mg/kg/day, 100 mg/kg/day, 200 mg/kg/day, and 400 mg/kg/day. All dams were subjected to caesarean section on gestational day 20, and all the fetuses were examined for external, visceral, and skeletal alterations. Toxicity in the dams manifested as significantly decreased body weight at 400 mg/kg/day and decreased liver weight, and increased adrenal glands weight at 200 mg/kg/day and 400 mg/kg/day. However, no treatment-related difference in the number of corpora lutea, the number of implantation sites, the implantation rate (%, resorption, dead fetuses, litter size, fetal deaths, fetal and placental weights, and sex ratio were observed between the groups. Morphological examinations of the fetuses demonstrated no significant difference in the incidences of abnormalities between the groups. No significant difference was found in the Zn content of fetal tissue between the control and high-dose groups. These results showed

  12. Natural course of early COPD

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    Rhee CK

    2017-02-01

    Full Text Available Chin Kook Rhee,1 Kyungjoo Kim,1 Hyoung Kyu Yoon,2 Jee-Ae Kim,3 Sang Hyun Kim,4 Sang Haak Lee,5 Yong Bum Park,6 Ki-Suck Jung,7 Kwang Ha Yoo,8 Yong Il Hwang7 1Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St Mary’s Hospital, 2Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Yeouido St Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, 3Pharmaceutical Policy Evaluation Research Team, Research Institution, 4Big Data Division, Health Insurance Review and Assessment Service, Wonju, 5Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, St Paul’s Hospital, College of Medicine, The Catholic University of Korea, 6Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Internal Medicine, Hallym University Kangdong Sacred Heart Hospital, Seoul, 7Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, 8Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Republic of Korea Background and objective: Few studies have examined the natural course of early COPD. The aim of this study was to observe the natural course of early COPD patients. We also aimed to analyze medical utilization and costs for early COPD during a 6-year period. Methods: Patients with early COPD were selected from Korean National Health and Nutrition Examination Survey (KNHANES data. We linked the KNHANES data of patients with early COPD to National Health Insurance data. Results: A total of 2,397 patients were enrolled between 2007 and 2012. The mean forced expiratory volume in 1 second (FEV1 was 78.6%, and the EuroQol five dimensions questionnaire (EQ-5D index value was 0.9. In total, 110 patients utilized health

  13. The health care burden of high grade chronic obstructive pulmonary disease in Korea: analysis of the Korean Health Insurance Review and Assessment Service data

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    Kim JH

    2013-11-01

    Full Text Available JinHee Kim,1 Chin Kook Rhee,2 Kwang Ha Yoo,3 Young Sam Kim,4 Sei Won Lee,5 Yong Bum Park,6 Jin Hwa Lee,7 YeonMok Oh,5 Sang Do Lee,5 Yuri Kim,8 KyungJoo Kim,8 HyoungKyu Yoon9 1Office of Health Service Research, National Evidence-Based Healthcare Collaborating Agency, Seoul, Korea; 2Department of Internal Medicine, Seoul St Mary’s Hospital, Catholic University of Korea College of Medicine, Seoul, Korea; 3Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea; 4Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea; 5Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; 6Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Internal Medicine, Hallym University Kangdong Sacred Heart Hospital, Seoul, Korea; 7Department of Internal Medicine, School of Medicine, Ewha Womans University, Seoul, Korea; 8Department of Clinical Research Support, National Strategic Coordinating Center for Clinical Research, Seoul, Korea; 9Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Yeouido St Mary’s Hospital, Catholic University of Korea College of Medicine, Seoul, Korea Background: Patients with high grade chronic pulmonary obstructive disease (COPD account for much of the COPD-related mortality and incur excessive financial burdens and medical care utilization. We aimed to determine the characteristics and medical care use of such patients using nationwide data from the Korean Health Insurance Review and Assessment Service in 2009. Materials and methods: Patients with COPD were identified by searching with the International Classification of Diseases–10th Revision for those using medication. Patients with high grade COPD were selected based on their patterns of tertiary institute visits and medication use. Results: The numbers of patients with high grade COPD increased rapidly

  14. Analysis of SiO2 nanoparticles binding proteins in rat blood and brain homogenate

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    Shim KH

    2014-12-01

    Full Text Available Kyu Hwan Shim,1 John Hulme,1 Eun Ho Maeng,2 Meyoung-Kon Kim,3 Seong Soo A An1 1Department of Bionano Technology, Gachon Medical Research Institute, Gachon University, Sungnam-si, 2Department of Analysis, KTR, Kimpo, Gyeonggi-do, 3Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, South Korea Abstract: A multitude of nanoparticles, such as titanium oxide (TiO2, zinc oxide, aluminum oxide, gold oxide, silver oxide, iron oxide, and silica oxide, are found in many chemical, cosmetic, pharmaceutical, and electronic products. Recently, SiO2 nanoparticles were shown to have an inert toxicity profile and no association with an irreversible toxicological change in animal models. Hence, exposure to SiO2 nanoparticles is on the increase. SiO2 nanoparticles are routinely used in numerous materials, from strengthening filler for concrete and other construction composites, to nontoxic platforms for biomedical application, such as drug delivery and theragnostics. On the other hand, recent in vitro experiments indicated that SiO2 nanoparticles were cytotoxic. Therefore, we investigated these nanoparticles to identify potentially toxic pathways by analyzing the adsorbed protein corona on the surface of SiO2 nanoparticles in the blood and brain of the rat. Four types of SiO2 nanoparticles were chosen for investigation, and the protein corona of each type was analyzed using liquid chromatography-tandem mass spectrometry technology. In total, 115 and 48 plasma proteins from the rat were identified as being bound to negatively charged 20 nm and 100 nm SiO2 nanoparticles, respectively, and 50 and 36 proteins were found for 20 nm and 100 nm arginine-coated SiO2 nanoparticles, respectively. Higher numbers of proteins were adsorbed onto the 20 nm sized SiO2 nanoparticles than onto the 100 nm sized nanoparticles regardless of charge. When proteins were compared between the two charges, higher numbers of proteins were

  15. Prenatal development toxicity study of zinc oxide nanoparticles in rats

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    Hong JS

    2014-12-01

    Full Text Available Jeong-Sup Hong,1,2 Myeong-Kyu Park,1 Min-Seok Kim,1 Jeong-Hyeon Lim,1 Gil-Jong Park,1 Eun-Ho Maeng,1 Jae-Ho Shin,3 Meyoung-Kon Kim,4 Jayoung Jeong,5 Jin-A Park,2 Jong-Choon Kim,6 Ho-Chul Shin2 1Health Care Research Laboratory, Korea Testing and Research Institute, Gimpo, South Korea; 2College of Veterinary Medicine, Konkuk University, Seoul, South Korea; 3Department of Biomedical Laboratory Science, Eulji University, Seongnam-si, South Korea; 4Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, South Korea; 5Toxicological Research Division, National Institute of Food and Drug Safety Evaluation, Chungcheongbuk-do, South Korea; 6College of Veterinary Medicine, Chonnam National University, Gwangju, South Korea Abstract: This study investigated the potential adverse effects of zinc oxide nanoparticles ([ZnOSM20(+ NPs] zinc oxide nanoparticles, positively charged, 20 nm on pregnant dams and embryo–fetal development after maternal exposure over the period of gestational days 5–19 with Sprague-Dawley rats. ZnOSM20(+ NPs were administered to pregnant rats by gavage at 0, 100, 200, and 400 mg/kg/day. All dams were subjected to a cesarean section on gestational day 20, and all of the fetuses were examined for external, visceral, and skeletal alterations. Toxicity in the dams manifested as significantly decreased body weight after administration of 400 mg/kg/day NPs; reduced food consumption after administration of 200 and 400 mg/kg/day NPs; and decreased liver weight and increased adrenal glands weight after administration of 400 mg/kg/day NPs. However, no treatment-related difference in: number of corpora lutea; number of implantation sites; implantation rate (%; resorption; dead fetuses; litter size; fetal deaths and placental weights; and sex ratio were observed between the groups. On the other hand, significant decreases between treatment groups and controls were seen for fetal weights after

  16. 5-aminolevulinic acid-incorporated nanoparticles of methoxy poly(ethylene glycol-chitosan copolymer for photodynamic therapy

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    Chung CW

    2013-02-01

    Full Text Available Chung-Wook Chung,1,* Kyu-Don Chung,2,* Young-Il Jeong,1 Dae Hwan Kang,1 1National Research and Development Center for Hepatobiliary Disease, Pusan National University Yangsan Hospital, Gyeongnam, Republic of Korea; 2Department of Anesthesiology and Pain Medicine, College of Medicine, The Catholic University, Seoul, Republic of Korea*These authors contributed equally to this workPurpose: The aim of this study was to make 5-aminolevulinic acid (5-ALA-incorporated nanoparticles using methoxy polyethylene glycol/chitosan (PEG-Chito copolymer for application in photodynamic therapy for colon cancer cells.Methods: 5-ALA-incorporated (PEG-Chito-5-ALA nanoparticles were prepared by ion complex formation between 5-ALA and chitosan. Protoporphyrin IX accumulation in the tumor cells and phototoxicity induced by PEG-Chito-5-ALA nanoparticles were assessed using CT26 cells in vitro.Results: PEG-Chito-5-ALA nanoparticles have spherical shapes with sizes diameters 200 nm. More specifically, microscopic observation revealed a core-shell structure of PEG-Chito-5-ALA nanoparticles. 1H NMR spectra showed that 5-ALA was incorporated in the core of the nanoparticles. In the absence of light irradiation, all components such as 5-ALA, empty nanoparticles, and PEG-Chito-5-ALA nanoparticles did not affect the viability of cells. However, 5-ALA or PEG-Chito-5-ALA nanoparticles induced tumor cell death under light irradiation, and the viability of tumor cells was dose-dependently decreased according to the increase in irradiation time. In particular, PEG-Chito-5-ALA nanoparticles induced increased phototoxicity and higher protoporphyrin IX accumulation into the tumor cells than did 5-ALA alone. Furthermore, PEG-Chito-5-ALA nanoparticles accelerated apoptosis/necrosis of tumor cells, compared to 5-ALA alone.Conclusion: PEG-Chito-5-ALA nanoparticles showed superior delivery capacity of 5-ALA and phototoxicity against tumor cells. These results show that PEG-Chito-5-ALA

  17. Enzyme-responsive doxorubicin release from dendrimer nanoparticles for anticancer drug delivery

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    Lee SJ

    2015-08-01

    Full Text Available Sang Joon Lee,1,* Young-Il Jeong,2,* Hyung-Kyu Park,3 Dae Hwan Kang,2,4 Jong-Suk Oh,3 Sam-Gyu Lee,5 Hyun Chul Lee31Department of Biomedical Sciences, Chonnam National University Medical School, Gwangju, 2Biomedical Research Institute, Pusan National University Hospital, Busan, 3Department of Microbiology, Chonnam National University Medical School, Gwangju, 4Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Gyeongnam, 5Department of Physical and Rehabilitation Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea*These authors contributed equally to this workBackground: Since cancer cells are normally over-expressed cathepsin B, we synthesized dendrimer-methoxy poly(ethylene glycol (MPEG-doxorubicin (DOX conjugates using a cathepsin B-cleavable peptide for anticancer drug targeting.Methods: Gly-Phe-Leu-Gly peptide was conjugated with the carboxylic acid end groups of a dendrimer, which was then conjugated with MPEG amine and doxorubicin by aid of carbodiimide chemistry (abbreviated as DendGDP. Dendrimer-MPEG-DOX conjugates without Gly-Phe-Leu-Gly peptide linkage was also synthesized for comparison (DendDP. Nanoparticles were then prepared using a dialysis procedure.Results: The synthesized DendGDP was confirmed with 1H nuclear magnetic resonance spectroscopy. The DendDP and DendGDP nanoparticles had a small particle size of less than 200 nm and had a spherical morphology. DendGDP had cathepsin B-sensitive drug release properties while DendDP did not show cathepsin B sensitivity. Further, DendGDP had improved anticancer activity when compared with doxorubicin or DendDP in an in vivo CT26 tumor xenograft model, ie, the volume of the CT26 tumor xenograft was significantly inhibited when compared with xenografts treated with doxorubicin or DendDP nanoparticles. The DendGDP nanoparticles were found to be relatively concentrated in the tumor tissue and

  18. Importance of Active Participation in Obesity Management Through Mobile Health Care Programs: Substudy of a Randomized Controlled Trial.

    Science.gov (United States)

    Oh, Bumjo; Yi, Ga-Hye; Han, Min Kyu; Kim, Jong Seung; Lee, Chang Hee; Cho, Belong; Kang, Hee Cheol

    2018-01-03

    passive group and 209 in the control group (without SmartCare service). There was a statistically significant difference in improvements to body weight, BMI, body fat percentage, and waist circumference among active participants compared with less active participants and the control group (Pservice, encouraging active participation is important. Clinicaltrials.gov NCT01344811; https://clinicaltrials.gov/ct2/show/NCT01344811 (Archived by WebCite at http://www.webcitation.org/6alT2MmIB). ©Bumjo Oh, Ga-Hye Yi, Min Kyu Han, Jong Seung Kim, Chang Hee Lee, Belong Cho, Hee Cheol Kang. Originally published in JMIR Mhealth and Uhealth (http://mhealth.jmir.org), 03.01.2018.

  19. Kalopanacis Cortex extract-capped gold nanoparticles activate NRF2 signaling and ameliorate damage in human neuronal SH-SY5Y cells exposed to oxygen–glucose deprivation and reoxygenation

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    Park SY

    2017-06-01

    Full Text Available Sun Young Park,1 Seon Yeong Chae,1,2 Jin Oh Park,2 Kyu Jin Lee,2 Geuntae Park1,2 1Bio-IT Fusion Technology Research Institute, 2Department of Nanofusion Technology, Graduate School, Pusan National University, Busan, Republic of Korea Abstract: Recently, environment-friendly synthesis of gold nanoparticles (GNPs has been extensively explored by biologists and chemists. However, significant research is still required to determine whether “eco-friendly” GNPs are beneficial to human health and to elucidate the molecular mechanisms of their effects on human cells. We used human neuronal SH-SY5Y cells to show that treatment with Kalopanacis Cortex extract-capped GNPs (KC-GNs, prepared via an eco-friendly, fast, one-pot synthetic route, protected neuronal cells against oxygen–glucose deprivation/reoxygenation (OGD/R-induced damage. To prepare GNPs, Kalopanacis Cortex was used without any chemical reducing and stabilizing agents. Ultraviolet–visible spectroscopy showed maximum absorbance at 526 nm owing to KC-GN surface plasmon resonance. Hydrodynamic size (54.02±2.19 nm and zeta potential (-20.3±0.04 mV were determined by dynamic light scattering. The average diameter (41.07±3.05 nm was determined by high-resolution transmission electron microscopy. Energy-dispersive X-ray diffraction spectroscopy and X-ray diffraction confirmed the presence of assembled GNPs. Fourier transform infrared analysis suggested that functional groups such as O–H, C–C, and C–N participated in KC-GN formation. Cell viability assays indicated that KC-GNs restored the viability of OGD/R-treated SH-SY5Y cells. Flow cytometry demonstrated that KC-GNs inhibited the OGD/R-induced reactive oxygen species production and mitochondrial membrane potential disruption. KC-GNs also inhibited the apoptosis of OGD/R-exposed cells. Western blot analysis indicated that the OGD/R-induced cellular apoptosis and simultaneous increases in the expression of cleaved caspase-3, p

  20. Nano-graphene oxide composite for in vivo imaging

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    Jang SC

    2018-01-01

    Full Text Available Sung-Chan Jang,1,2,* Sung-Min Kang,1,* Jun Young Lee,3,* Seo Yeong Oh,1 AT Ezhil Vilian,4 Ilsong Lee,1,2 Young-Kyu Han,4 Jeong Hoon Park,3 Wan-Seob Cho,5,* Changhyun Roh,2,6 Yun Suk Huh1 1Department of Biological Engineering, Biohybrid Systems Research Center (BSRC, Inha University, Incheon, 2Biotechnology Research Division, 3Radiation Instrumentation Research Division, Advanced Radiation Technology Institute (ARTI, Korea Atomic Energy Research Institute (KAERI, Jeongeup, 4Department of Energy and Materials Engineering, Dongguk University, Seoul, 5Laboratory of Toxicology, Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan, 6Radiation Biotechnology and Applied Radioisotope Science, University of Science and Technology (UST, Daejeon, Republic of Korea *These authors contributed equally to this work Introduction: Positron emission tomography (PET tracers has the potential to revolutionize cancer imaging and diagnosis. PET tracers offer non-invasive quantitative imaging in biotechnology and biomedical applications, but it requires radioisotopes as radioactive imaging tracers or radiopharmaceuticals. Method: This paper reports the synthesis of 18F-nGO-PEG by covalently functionalizing PEG with nano-graphene oxide, and its excellent stability in physiological solutions. Using a green synthesis route, nGO is then functionalized with a biocompatible PEG polymer to acquire high stability in PBS and DMEM. Results and discussion: The radiochemical safety of 18F-nGO-PEG was measured by a reactive oxygen species and cell viability test. The biodistribution of 18F-nGO-PEG could be observed easily by PET, which suggested the significantly high sensitivity tumor uptake of 18F-nGO-PEG and in a tumor bearing CT-26 mouse compared to the control. 18F-nGO-PEG was applied successfully as an efficient radiotracer or drug agent in vivo using PET imaging. This article is expected to assist many researchers in the fabrication of

  1. Pharmacokinetics and tolerability of the new second-generation nonnucleoside reverse- transcriptase inhibitor KM-023 in healthy subjects

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    Cha YJ

    2014-09-01

    Full Text Available Yu-Jung Cha,1,* Kyoung Soo Lim,2,* Min-Kyu Park,1 Stephen Schneider,3 Brian Bray,3 Myung-Chol Kang,3 Jae-Yong Chung,1 Seo Hyun Yoon,1 Joo-Youn Cho,1 Kyung-Sang Yu11Department of Clinical Pharmacology and Therapeutics, Seoul National University College of Medicine and Hospital, Seoul, South Korea; 2Department of Clinical Pharmacology and Therapeutics, CHA University School of Medicine and CHA Bundang Medical Center, Seongnam, South Korea; 3Kainos Medicine USA Inc., Morrisville, NC, USA *These authors contributed equally to this workBackground: KM-023 is a new second-generation nonnucleoside reverse-transcriptase inhibitor that is under development for the treatment of human immunodeficiency virus (HIV type 1 infection. Objective: This study determined KM-023 tolerability and pharmacokinetic characteristics in healthy subjects. Materials and methods: A randomized, double-blinded, placebo-controlled, dose-escalation study was conducted in 80 healthy South Korean male volunteers. The subjects were allocated to single- or multiple-dose (once daily for 7 days groups that received 75, 150, 300, or 600 mg drug or placebo in a 4:1 ratio. Safety and pharmacokinetic assessments were performed during the study. Plasma and urine concentrations were quantified using liquid chromatography–tandem mass spectrometry. Results: The average maximum concentration (Cmax and area under the concentration–time curve from time 0 to infinity (AUC∞ values of KM-023 for the 75–600 mg doses in the single-dose study ranged from 440.2 ng/mL to 1,245.4 ng/mL and 11,142.4 ng • h/mL to 33,705.6 ng • h/mL, respectively. Values of the mean Cmax at a steady state and AUC within the dosing interval ranged from 385.1 ng/mL to 1,096.7 ng/mL and 3,698.9 ng • h/mL to 10,232.6 ng • h/mL, respectively, following 75–600 mg doses in the multiple-dose study. Dose proportionality was not observed for KM-023. KM-023 showed a 0.6-fold accumulation after multiple doses in the 600

  2. Chronic bronchitis is an independently associated factor for more symptom and high-risk groups

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    Choi JY

    2016-06-01

    Full Text Available Joon Young Choi,1 Hyoung Kyu Yoon,2 Seoung Ju Park,3 Yong Bum Park,4 Kyeong-Cheol Shin,5 Ju Ock Na,6 Kwang Ha Yoo,7 Ki-Suck Jung,8 Young Kyoon Kim,1 Chin Kook Rhee1 1Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St Mary’s Hospital, 2Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Yeouido St Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, 3Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Internal Medicine, Chonbuk National University Medical School, Jeonju, 4Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Internal Medicine, Hallym University Kangdong Sacred Heart Hospital, Seoul, 5Regional Center for Respiratory Disease, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu, 6Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Soonchunhyang University Cheonan Hospital, Cheonan, 7Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Konkuk University School of Medicine, Seoul, 8Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym University Medical Center, Hallym University College of Medicine, Anyang, Republic of Korea Background: The chronic bronchitis (CB phenotype has been associated with poor quality of life and an increased risk of disease in patients with COPD. However, little information exists regarding the relationship between the CB phenotype and the COPD assessment test (CAT score. The goal of this study was to reveal the different pattern of CAT scores between CB and non-CB patients. Moreover, we aimed to investigate whether the CB phenotype is an independently associated factor for more symptom and high-risk groups.Methods: Data were obtained from the Korea COPD Subgroup Study cohort recruited from 46 centers in South

  3. Comorbidities in obstructive lung disease in Korea: data from the fourth and fifth Korean National Health and Nutrition Examination Survey

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    Park HJ

    2015-08-01

    Full Text Available Hee Jin Park, Ah Young Leem, Sang Hoon Lee, Ju Han Song, Moo Suk Park, Young Sam Kim, Se Kyu Kim, Joon Chang, Kyung Soo Chung Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Severance Hospital, Institute of Chest Disease, Yonsei University College of Medicine, Seoul, South Korea Background: Comorbidities can occur frequently in patients with chronic obstructive pulmonary disease (COPD and can influence mortality and morbidity independently. It is increasingly recognized that many patients with COPD have comorbidities that have a major impact on their quality of life and survival. Therefore, we investigated the prevalence of comorbidities in Korean COPD populations. Methods: We used data obtained in the 6 years of the fourth and fifth Korean National Health and Nutrition Examination Survey (KNHANES IV and V. Among 50,405 subjects, 16,151 subjects aged ≥40 years who performed spirometry adequately were included in this study. Airway obstruction was defined as forced expiratory volume in 1 second/forced vital capacity <0.7, and the Global Initiative For Chronic Obstructive Lung Disease stage was used to evaluate the severity of airway obstruction. Statistical analyses were performed using SAS 9.2. Results: Among the 16,151 subjects (43.2% male, 56.8% female; mean age: 57.1 years for men and 57.2 years for women, 13.1% had obstructive lung function; 11.3%, restrictive lung function; and 75.6%, normal lung function. Among individuals with obstructive lung function, 45.3%, 49.4%, and 5.3% had mild, moderate, and severe and very severe airflow limitation. The prevalence of hypertension, diabetes mellitus (DM, underweight, and hypertriglyceridemia was higher in the obstructive lung function group than in the normal lung function group (49.6% vs 35.2%; 16.8% vs 10.5%; 3.3% vs 1.3%; 19.7% vs 17.0%. According to the severity of airway obstruction, hypertension and underweight were more common as severity increased

  4. Prevalence of and risk factors for postoperative pulmonary complications after lung cancer surgery in patients with early-stage COPD

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    Kim ES

    2016-06-01

    Full Text Available Eun Sun Kim,1 Young Tae Kim,2 Chang Hyun Kang,2 In Kyu Park,2 Won Bae,1 Sun Mi Choi,1 Jinwoo Lee,1 Young Sik Park,1 Chang-Hoon Lee,1 Sang-Min Lee,1 Jae-Joon Yim,1 Young Whan Kim,1 Sung Koo Han,1 Chul-Gyu Yoo1 1Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, 2Department of Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Seoul, Republic of Korea Purpose: This study aimed to investigate whether the prevalence of postoperative pulmonary complications (PPCs in patients with non-small-cell lung cancer (NSCLC is even higher in the early stages of COPD than in such patients with normal lung function and to verify the usefulness of symptom- or quality of life (QoL-based scores in predicting risk for PPCs.Patients and methods: Patients undergoing pulmonary resection for NSCLC between July 2012 and October 2014 were prospectively enrolled. Preoperative measurements of lung function, dyspnea, and QoL, operative characteristics, PPCs, duration of postoperative hospitalization, and in-hospital mortality were assessed.Results: Among 351 consecutive patients with NSCLC, 343 patients with forced expiratory volume in 1 second (FEV1 ≥70% of predicted value were enrolled. At least one PPC occurred in 57 (16.6% patients. Prevalence of PPC was higher in patients with COPD (30.1% than in those with normal spirometry (10.0%; P<0.001. However, in patients with COPD, the prevalence of PPC was not different in patients with FEV1 ≥70% compared to those with FEV1 <70% and between group A (low risk and less symptoms and group B (low risk and more symptoms patients with COPD, based on the new Global initiative for chronic Obstructive Lung Disease 2011 guidelines. In patients with COPD, body mass index (odds ratio [OR]: 0.80, P=0.007, carbon monoxide diffusing capacity of the lung (DLCO, % predicted value (OR: 0.97, P=0.024, and operation time (OR: 1.01, P=0.003, but not COPD assessment test or St

  5. Cut-off value of FEV1/FEV6 as a surrogate for FEV1/FVC for detecting airway obstruction in a Korean population

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    Chung KS

    2016-08-01

    Full Text Available Kyung Soo Chung,1,2 Ji Ye Jung,1,2 Moo Suk Park,1,2 Young Sam Kim,1,2 Se Kyu Kim,1,2 Joon Chang,1,2 Joo Han Song1,2 1Division of Pulmonology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea; 2Institute of Chest Disease, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea Background: Forced expiratory volume in 1 second (FEV1/forced expiratory volume in 6 seconds (FEV6 has been proposed as an alternative to FEV1/forced vital capacity (FVC for detecting airway obstruction. A fixed cut-off value for FEV1/FEV6 in a Korean population is lacking. We investigated a fixed cut-off for FEV1/FEV6 as a surrogate for FEV1/FVC for detecting airway obstruction.Materials and methods: We used data obtained in the 5 years of the Fifth and Sixth Korean National Health and Nutrition Examination Survey. A total of 14,978 participants aged ≥40 years who underwent spirometry adequately were the study cohort. “Airway obstruction” was a fixed cut-off FEV1/FVC <70% according to the Global Initiative for Chronic Obstructive Lung Disease guidelines. We also used European Respiratory Society/Global Lung Initiative 2012 equations for the FEV1/FVC lower limit of normal.Results: Among the 14,978 participants (43.5% male, 56.5% female; mean age: 56.9 years for men and 57.0 years for women, 14.0% had obstructive lung function according to a fixed cut-off FEV1/FVC <70%. Optimal FEV1/FEV6 cut-off for predicting FEV1/FVC <70% was 75% using receiver operating characteristic curve analyses (area under receiver operating characteristic curve =0.989, 95% confidence interval 0.987–0.990. This fixed cut-off of FEV1/FEV6 showed 93.8% sensitivity, 94.8% specificity, 74.7% positive predictive value, 98.9% negative predictive value, and 0.8 Cohen’s kappa coefficient. When compared with FEV1/FVC < lower limit of normal, FEV1/FEV6 <75% tended to over-diagnose airflow limitation (just like a fixed cut

  6. Ocular manifestations of idiopathic aplastic anemia: retrospective study and literature review

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    Mansour AM

    2014-04-01

    Full Text Available Ahmad M Mansour,1 Jong Wook Lee,2 Seung Ah Yahng,2 Kyu Seop Kim,3 Maha Shahin,4 Nelson Hamerschlak,5 Rubens N Belfort,6 Shree K Kurup71Department of Ophthalmology, American University of Beirut, Rafic Hariri University Hospital, Beirut, Lebanon; 2Division of Hematology, Seoul St Mary’s Hospital, The Catholic University of Korea, Seoul, Republic of Korea; 3Department of Ophthalmology, Seoul St Mary’s Hospital, The Catholic University of Korea, Seoul, Republic of Korea; 4Department of Ophthalmology, Mansoura University, Mansoura City, Egypt; 5Oncology and Hematology Program, Instituto Israelita de Ensino e Pesquisa Albert Einstein, São Paulo, Brazil; 6Vision Institute, Hospital São Paulo, Federal University of São Paulo, Brazil; 7Department of Ophthalmology, Wake Forest University Baptist Medical Center, Winston-Salem, NC, USAAbstract: Aplastic anemia (AA is a rare disease with few reports on its ophthalmic ­manifestations. The ocular findings are described in a retrospective consecutive series of 719 AA Korean patients followed at the Hematology Clinic of The Catholic University of Korea. Out of a total of 719 patients, 269 patients had eye examinations, 156 patients had retinal evaluation, and 37 (23.7% had retinal findings. These 37 patients had unilateral retinal ­hemorrhage in seven and bilateral retinal hemorrhage in 30 with mean hemoglobin of 6.6 g/dL (range 2.7–12.6 g/dL and platelet counts of 18.8×109/L (range 4–157×109/L; central retinal vein occlusion-like picture occurred in nine patients and these had similar rheology to the rest of the subjects; optic disc edema, cotton-wool spots, macular edema, and dry eyes occurred in two, three, five, and three patients, respectively. In this Korean series of 141 subjects with AA, systemic bleeding occurred in 24.8% of subjects, retinal hemorrhage in 37% of subjects, and any bleeding site (eye or elsewhere occurred in 47.5% of subjects with AA. A

  7. Risk factors for the discontinuation of roflumilast in patients with chronic obstructive pulmonary disease

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    Kim KH

    2017-12-01

    Full Text Available Kyung Hoon Kim,1 Hye Seon Kang,2 Ju Sang Kim,3 Hyoung Kyu Yoon,4 Sung Kyoung Kim,5 Chin Kook Rhee1 1Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, 2Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Bucheon St Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon, 3Division of Pulmonary Medicine, Department of Internal Medicine, Incheon St Mary’s Hospital, College of Medicine, The Catholic University of Korea, Incheon, 4Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Yeouido St Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, 5Division of Pulmonary Medicine, Department of Internal Medicine, St Vincent’s Hospital, College of Medicine, The Catholic University of Korea, Suwon, Republic of Korea Introduction: Roflumilast is a phosphodiesterase-4 inhibitor, which can decrease exacerbation in patients with chronic obstructive pulmonary disease (COPD. However, adverse effects are a major barrier to medication use, and little is known regarding the risk factors for discontinuation of roflumilast in COPD patients.Method: A search of the clinical databases identified all patients who were prescribed roflumilast between December 2012 and April 2015 in the four hospitals of The Catholic University of Korea, Korea. The study subjects were limited to patients who had taken 500 µg of roflumilast. We studied the factors associated with drug discontinuation and drug adverse events by univariate and multivariate analyses.Results: Among 154 eligible patients, 54 (35.1% discontinued their roflumilast prescription. Most patients were elderly, male, current or former smokers, and had moderate-to-severe airflow limitation. Low–body mass index (BMI patients were more likely to undergo drug

  8. Inhaled indacaterol for the treatment of COPD patients with destroyed lung by tuberculosis and moderate-to-severe airflow limitation: results from the randomized INFINITY study

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    Kim CJ

    2017-05-01

    Full Text Available Cheong-Ju Kim,1 Hyoung-Kyu Yoon,2 Myung-Jae Park,3 Kwang-Ha Yoo,4 Ki-Suck Jung,5 Jeong-Woong Park,6 Seong Yong Lim,7 Jae Jeong Shim,8 Yong Chul Lee,9 Young-Sam Kim,10 Yeon-Mok Oh,11 Song Kim,12 Chul-Gyu Yoo13 1Department of Internal Medicine, National Health Insurance System Ilsan Hospital, Koyang, 2Division of Pulmonology, Department of Internal Medicine, St Mary’s Hospital, College of Medicine, The Catholic University of Korea, 3Division of Respiratory and Critical Care Medicine, Kyung Hee University Hospital, Kyung Hee University, Seoul, 4Department of Internal Medicine, Konkuk University School of Medicine, Gwangjin-gu, 5Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Hallym University Sacred Heart Hospital, Hallym University Medical School, Anyang-si, 6Division of Pulmonary and Allergy Medicine, Gachon University Gil Medical Center, Incheon, 7Division of Pulmonary and Critical Care Medicine, Department of Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, 8Department of Internal Medicine, Korea University College of Medicine, Seoul, 9Department of Internal Medicine and Research Center for Pulmonary Disorders, Chonbuk National University Medical School, Jeonbuk, 10Department of Internal Medicine, Yonsei University College of Medicine, 11Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, 12Clinical Development and Medical Affairs, Novartis Korea Ltd., Seoul, 13Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea Background and objective: Pulmonary tuberculosis (TB is a risk factor for chronic obstructive pulmonary disease (COPD; however, few clinical studies have investigated treatment effectiveness in COPD patients with destroyed lung by TB. The Indacaterol effectiveness in COPD patients with Tuberculosis history (INFINITY

  9. The comparative immunotoxicity of mesoporous silica nanoparticles and colloidal silica nanoparticles in mice

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    Lee S

    2013-01-01

    Full Text Available Soyoung Lee,1,* Mi-Sun Kim,1,* Dakeun Lee,2 Taeg Kyu Kwon,3 Dongwoo Khang,4 Hui-Suk Yun,5 Sang-Hyun Kim11CMRI, Laboratory of Immunotoxicology, Department of Pharmacology,School of Medicine, Kyungpook National University, Daegu, Republic of Korea; 2Department of Pathology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea; 3Department of Immunology, School of Medicine, Keimyung University, Daegu, Republic of Korea; 4School of Nano and Advanced Materials Science and Engineering, Gyeongsang National University, Jinju, Republic of Korea; 5Engineering Ceramics Department, Powder and Ceramics Division, Korea Institute of Materials Science, Changwon, Republic of Korea*These authors contributed equally to this workBackground: Mesoporous silica (MPS nanoparticles (NPs, which have a unique pore structure and extremely large surface area and pore volume, have received much attention because of their biomedical application potential. Using MPS NPs for biomedical devices requires the verification of their biocompatibility because the surface area of NPs is one of the most important determinants of toxicity, including the cellular uptake and immune response. We have previously reported that the cytotoxicity and inflammation potential of MPS NPs have been shown to be lower than those of general amorphous colloidal silica (Col NPs in macrophages, but the low cytotoxicity does not guarantee high biocompatibility in vivo. In this study, we compared the in vivo immunotoxicity of MPS and Col NPs in the mouse model to define the effects of pore structural conditions of silica NPs.Materials and methods: Both MPS and Col NPs (2, 20, and 50 mg/kg/day were intraperitoneally administered in female BALB/c mice for 4 weeks, and clinical toxicity, lymphocyte population, serum IgG/IgM levels, and histological changes were examined.Results: There was no overt sign of clinical toxicity in either MPS- or Col-treated mice. However, MPS NPs led to

  10. Comparison of the fixed ratio and the Z-score of FEV1/FVC in the elderly population: a long-term mortality analysis from the Third National Health and Nutritional Examination Survey

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    Oh DK

    2018-03-01

    Full Text Available Dong Kyu Oh,1 Seunghee Baek,2 Sei Won Lee,1 Jae Seung Lee,1 Sang-Do Lee,1 Yeon-Mok Oh1 1Department of Pulmonary and Critical Care Medicine, Clinical Research Center for Chronic Obstructive Airway Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea; 2Department of Clinical Epidemiology and Biostatistics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea Background and objective: Despite the ongoing intense debate on the definition of airflow limitation by spirometry in the elderly population, there have only been few studies comparing the fixed ratio and the Z-score of forced expiratory volume in 1 second (FEV1/forced vital capacity (FVC in terms of long-term mortalities. In this study, we aimed to identify the proper method for accurately defining the airflow limitation in terms of long-term mortality prediction in the elderly population. Methods: Data were collected from the Third National Health and Nutrition Examination Survey in the US. Non-Hispanic Caucasians aged 65–80 years were included. The receiver operating characteristic (ROC curves of both methods were plotted and compared for 10-year all-cause, respiratory, and COPD mortalities. Results: Of 1,331 subjects, the mean age was 71.7 years and 805 (60.5% were males. For the 10-year all-cause mortality, the area under the curve (AUC of the fixed ratio was significantly greater than that of the Z-score of FEV1/FVC, but both showed poor prediction performance (0.633 vs 0.616, p<0.001. For the 10-year respiratory and COPD mortalities, both the fixed ratio and the Z-score of FEV1/FVC showed comparable prediction performance with greater AUCs (0.784 vs 0.778, p=0.160, and 0.896 vs 0.896, p=0.971, respectively. Interestingly, the conventional cutoff of 0.7 in the fixed ratio was consistently higher than the optimal for the 10-year all-cause, respiratory, and COPD mortalities (0.70 vs 0.69, 0.62, and 0.61, respectively

  11. Comparison of hydration and nutritional status between young and elderly hemodialysis patients through bioimpedance analysis

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    Lee JE

    2015-08-01

    Full Text Available Jung Eun Lee,1,2 In Young Jo,3 Song Mi Lee,3 Woo Jeong Kim,3 Hoon Young Choi,2,4 Sung Kyu Ha,4 Hyung Jong Kim,5 Hyeong Cheon Park2,4 1Department of Internal Medicine, Yongin Severance Hospital, Yonsei University College of Medicine, 2Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, 3Department of Nutrition Services, Gangnam Severance Hospital, 4Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, 5Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam, Korea Background: The number of elderly people on dialysis is increasing rapidly. Fluid overload and malnutrition status are serious problems in elderly dialysis patients. We aimed to compare the hydration and nutritional status through bioimpedance analysis (BIA between young and elderly hemodialysis (HD patients and to analyze risk factors related to fluid overload and malnutrition status in these patients.Method: We conducted a cross-sectional study, in which 82 HD (males 42, mean age 58.7±12.9 years patients were enrolled. We collected different types of data: laboratory data, such as serum creatinine, albumin, total iron-binding capacity, hemoglobin, total cholesterol; anthropometric data, such as hand grip strength (HGS; BIA data, such as intracellular water, skeletal muscle mass, body cell mass, bone mineral content, phase angle (PhA, extra cellular water (ECW/total body water (TBW ratio; and malnutrition-inflammation score (MIS, which is a traditional nutritional parameter for dialysis patients. All patients were stratified into two groups according to their age: young (<65 years [n=54] and elderly (≥65 years [n=28].Results: Total iron-binding capacity and HGS were significantly lower in elderly HD patients than in young HD patients (198.9±35.6 vs 221.4±52.1 mcg/dL; and 22.4±10.3 vs 36.4±23.2 kg, respectively (P<0.05. Also, intracellular water and Ph

  12. INTRODUCTION: Anticipated changes in the global atmospheric water cycle

    Science.gov (United States)

    Allan, Richard P.; Liepert, Beate G.

    2010-06-01

    an important example. Understanding surface solar 'dimming' and 'brightening' trends in the context of past and current changes in the water cycle are discussed in a guest editorial by Wild and Liepert (2010). The key roles anthropogenic aerosols can play on a regional scale are discussed by Lau et al (2010) through their study of the regional impact of absorbing aerosols on warming and snow melt over the Himalayas. The overarching goal of climate prediction is to provide reliable, probabilistic estimates of future changes. Relating hydrological responses back to a sound physical basis, the motivation for this special focus issue, is paramount in building confidence in anticipated changes, especially in the global water cycle. We are grateful to the reviewers and the journal editorial board for making this focus issue possible. Focus on Anticipated Changes in the Global Atmospheric Water Cycle Contents Editorials The global atmospheric water cycle Lennart Bengtsson The Earth radiation balance as driver of the global hydrological cycle Martin Wild and Beate Liepert Letters Enhanced surface warming and accelerated snow melt in the Himalayas and Tibetan Plateau induced by absorbing aerosols William K M Lau, Maeng-Ki Kim, Kyu-Myong Kim and Woo-Seop Lee Current changes in tropical precipitation Richard P Allan, Brian J Soden, Viju O John, William Ingram and Peter Good Direct versus indirect effects of tropospheric humidity changes on the hydrologic cycle S C Sherwood How closely do changes in surface and column water vapor follow Clausius-Clapeyron scaling in climate change simulations? P A O'Gorman and C J Muller Linking increases in hourly precipitation extremes to atmospheric temperature and moisture changes Geert Lenderink and Erik van Meijgaard Are climate-related changes to the character of global-mean precipitation predictable? Graeme L Stephens and Yongxiang Hu A comparison of large scale changes in surface humidity over land in observations and CMIP3 general