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  • 1
    Call number: AWI P7-18-91976
    Type of Medium: Monograph available for loan
    Pages: 140 Seiten , Illustrationen
    Language: English
    Note: Contents: Polar sciences and global environmental changes / Byong-Kwon Park. - The sun earth connection: thermodynamics of the terrestrial atmosphere during geo-effective events / R. J. Niciejewski and Y.-I. Won. - Observations of atmospheric waves in the high-latitude / Y.-I. Won, R. J. Niciejewski, P. Espy, J.-K. Chung and Bang Yong Lee. - Malaysian Antarctic Research Program / Nasaruddin Rahman, Salleh Mohd Nor and Azizan Abu Samah. - Compositional variation in pyrochlore from the Sokoli Phoscorite-Carbonatite complex, Kola Peninsula, Arctic / Mi Jung Lee, C. Terry Williams, Jong Ik Lee, and Yeadong Kim. - U-Th-Pb electron microprobe datings on the Rayner complex, East Antarctica / Yoichi Motoyoshi, Tomokazu Hokada and Kazuyuki Shiraishi. - Geochemical variation during hydrothermal alteration of basaltic andesite at Barton Peninsula, King George Island, Antarctica / Soon Do Hur, Jong Ik Lee and Jeong Hwang. - The paleocene-eocene volcanic succession in the Barton Peninsula, King George Island, Antarctica: Lithofacies, eruption styles and depositional processes / Seung Bum Kim, Young Kwan Shon and Moon Young Choe. - Holocene paleoclimate in Antarctic Lake Langer (King George Island) / B. K. Khim, K. Lee, H. I. Yoon and C. Y. Kang. - Holocene paleoceanography and paleoclimate of the West Spitsbergen Area, Euro-Arctic margin / Morten Hald, Hanne Ebbesen, Matthias Forwick, Sergei Korsun, Tore O. Vorren, Liza Khomenko, and Fred Godtliebsen. - Origins and paleoceanographic significance of layered diatom ooze interval from the Bransfield Strait in the Northern Antarctic Peninsula around 2500 yrs BP / Ho Il Yoon, Byong-Kwon Park, Yeadong Kim, Cheon Yun kang and Sung-Ho Kang. - A record of holocene environmental changes in terrestrial sedimentary deposits on King George Island, Antarctica / A. Tatur, R. del Valle, A. Barczuk, J. Martinez-Macchiavello. - Geochemistry of soils of King George Island, South Shetland Islands, West Antarctica: Implications for pedogenesis in cold polar regions / Yong Il Lee, Hyoun Soo Lim, and Ho Il Yoon. - Seafloor structure around the epicenter of the Great Antarctic Plate earthquake / Yoshifumi Nogi and Kin-ichiro Koizumi. - Multidisciplinary surveys by 'structure and evolution of the East Antarctic Lithosphere': SEAL-2000, -2002 / M. Kanao, H. Miyamachi, S. Toda, H. Murakami, T. Tsutsui, T. Matsushima, M. Takada, A. Watanabe, M. Yamashita, K. Yoshii, K. Kaminuma, and SEAL Geotransect Group. - Local seismic activity around Syowa Station, East Antarctica / Katsutada Kaminuma and Masaki Kanao. - Morphological characteristics of the intersection between Phoenix Ridge and the Hero Fracture Zone / Kyu Jung Kim, Young Keun Jin, Sang Heon Nam, Joo Han Lee and Yeadong Kim. - Visual observation experiments to investigate the formation processes of globular gas hydrate / H. Shoji. - Gas hydrate BSR-derived heat flow variation on the South Shetland Continental Margin, Antarctic Peninsula / Young Keun Jin, Sang Heon Nam, Yeadong Kim, Kyu Jung Kim and Joo Han Lee. - Introduction to ice core drilling program on Amery Ice Shelf in the 2002/2003 Antarctic summer season / Yuansheng Li, Dejun Tan, Zengdi Pan, Zhaoqian Dong, Bo Sun and Jiahong Wen. - 724 M deep ice core from Akademii Nauk Ice Cap Severnaya Zemlya (Russian Arctic) - Electrical conductivity measurements and isotopic record / D. Fritzsche, R. Schütt, H. Meyer, H. Miller, and F. Wilhelms. - Introduction of the Chinese Polar Cryospheric Database System (CPCDS) / Xiang Qin, Dahe Qin and Yongjian Ding. - Natural variations in lead, cadmium, copper and zinc concentrations and their sources in Vostok Antarctic Ice from 65,000 to 240,000 years BP / Sungmin Hong, Kang Hyun Lee, Claude F. Boutron, Christophe P. Ferrari, Jean Robert Petit, Carlo Barbante, Kevin Rosman, Vladimir Y. Lipenkov. - Fluctuation of ice sheet elevation in East Antarctica since the late Pliocene / Xiaohan Liu, Ping Kong, Feixin Huang, Xiaoli Li, and Aimin Fang. - Variations of total ozone amount and erythermal ultraviolet radiation at King Sejong Station in West Antarctica / Bang Yong Lee, Hi-Ku Cho, Yun-Gon Lee and Young-In Won. - Variability of regional atmospheric circulation related with recent warming in the Antarctic Peninsula / Jeong-Soon Lee, Tae-Yong Kwon, Bang-Yong Lee, Ho Il Yoon and Jeong-Woo Kim. - The surface UV-A and erythermal UV-B radiation changes at King Sejong Station of West Antarctica / Kyu-Tae Lee, Joon-Bum Jee, Won-Hak Lee, Youn-Joung Kim, Bang Yong Lee, and Young-In Won. - Climatological characteristics of the polar ionosphere based on the Sondrestrom and Chatanika incoherent scatter radar measurements / Young-Sil Kwak and Byung-Ho Ahn. - Cloudy band and air inclusions observed in deep ice core samples from GRIP, Greenland / Kimiko Shimohara, Hitoshi Shoji and Sepp Kipfstuhl. - Geochemical trends and Milankovitch cycles within sediment from the North Atlantic Ocean / Sangmin Hyun, Naokazu Ahagon and Ho Il Yoon. - Oceanographic mechanism of regional warming in the Antarctic Peninsula / Kyu-Cheul Yoo, Ho Il Yoon, Jae-Kyung Oh, Tae-Yong Kwon and Cheon Yun Kang. - East Asian Monsoon variation during the late pleistocene to holocene: paleoclimate changes indicated by proxy records from Jeju Island, Korea / Seung Hyoun Lee, Yong Il Lee, Ho Il Yoon and Cheon Yun Kang. - Occurrence of vivianite in late pleistocene lacustrine sediments at Sogwipo, Jeju Island, Korea / Seung Hyoun Lee, Yong Il Lee, Ho Il Yoon, Cheon Yun Kang and Yaedong Kim. - Microfabric analysis of laminated diatom ooze in the holocene sediments from the eastern Bransfield Strait, Antarctic Peninsula / Jang Jun Bahk, Ho Il Yoon, Yeadong Kim, Cheon Yun Kang and Sung Ho Bae. - Late Quaternary paleoenvironment of the Saint Anna Trough, Arcitc Russia / Jae Il Lee, Yeadong Kim and Ho Il Yoon. - Formation and dissociation processes of gas hydrates composed of methane and carbon dioxide below the ice point / A. Hachikubo, K. Yamada, T. Miura, K. Hyakutake, K. Abe and H. Shoji. - Visual observations of tubular gas hydrate formation in a pressure cell with water and seafloor sediment / K. Hyakutake, O. Kitamura, S. Kataoka, A. Hachikubo, H. Shoji and L. Mazurenko. - Formation processes of massive gas hydrate in a pressure cell with water-saturated sediment conditions / O. Kitamura, S. Kataoka, K. Hyakutake, A. Hachikubo and H. Shoji. - Phase equilibrium studies on mixed gas hydrates composed of methane and carbon dioxide below the ice point / T. Miura, A. Hachikubo, K. Hyakutake, K. Abe and H. Shoji. - CP-MAS 13C-NMR study on the crystallographic structure of natural gas hydrate in the bottom of the Okhotsk Sea and Lake Baikal / M. Kida, H. Sakagami, H. Minami, Y. Numokawa, N. Takahashi, T. Matveeva, H. Shoji, S. Takeya, Y. Kamata, T. Ebinuma, H. Narita, V. Soloviev, K. Wallmann, N. Biebow, A. Obzhirov, A. Salomatin, J. Poort, O. Khlystov and M. Grachev. - Some features of gas hydrates in the sea of Okhotsk / T. Matveeva, V. Soloviev, K. Wallmann, A. Obzhirov, N. Biebow, J. Poort, A. Salomatin and H. Shoji. - High-resolution echo facies analysis of glacial-marine deposits in the Bransfield Basin, Antarctica / S. H. Yoon, H. I. Yoon and J. Howe. - Characteristics of Beach sands, King George Island, West Antarctica / Tae Jin Choi, Yong Il Lee and Ho Il Yoon. - Transition from debris flow to hyperconcentrated flow in a submarine channel (the Cretaceous Cerro Toro Formation, Southern Chile) / Y. K. Sohn, M. Y. Choe, and H. R. Jo. - Chemical weathering of glacial debris and volcanic ash in King George Island, Antarctica / Gi Young Jeong and Bong Ho Lee. - The cenozoic sedimentary records found in the Grove Mountains, East Antarctica and their climatic implications / Aimin Fang, Xiaohan Liu, Xiaoli Li, Jong Ik Lee, Yitai Ju and Feixin Huang. - The pollen assemblages found in the cenozoic sedimentary rocks in Grove Mountains, East Antarctica / Aimin Fang, Xiaohan Liu, Xiaoli Li, Yitai Ju and Weimin W
    Location: AWI Reading room
    Branch Library: AWI Library
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 124-126 (June 2007), p. 1825-1828 
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: Although glass wool and polyurethane foam are the most widely used sound-absorber andinsulating materials, there are some critical problems related to the environmental issues. In thisreason, there is a lot of attention on the aluminum foam as a sound absorption material, therefore, inthis research, sound absorption and transmission loss properties were studied. The results showed thatlow density aluminum foam performed better in both sound absorption and transmission loss and theproperties were improved as increased air cavity and space
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 26-28 (Oct. 2007), p. 699-702 
    ISSN: 1662-8985
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The mechanical properties of the nano-size primary α-Ti phase in Ti55Zr18Ni6Cu7Be14bulk metallic glass (BMG) have been examined through various annealing temperatures and times.The yield strength and ductility were changed upon variation of α-Ti volume percent originate fromheating conditions. The strength mechanism and associated heating conditions (heating rate, timeand temperature) are discussed in terms of the microstructural observations and mechanicalproperties
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  • 4
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 26-28 (Oct. 2007), p. 1349-1352 
    ISSN: 1662-8985
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Aluminum foam is lightweight structures, energy absorption and thermal management. Inthis reason, there is a lot of attention on the aluminum foam as a structural material. The presentpapers showed various conventional joining techniques can be applied for foam-sheet structures, i.e.,riveting, screwing, welding, gluing and soldering. This research presents new joining technique ofAluminum foam/Aluminum metal using spark plasma sintering (SPS) process. The Aluminumfoam/Aluminum metals were fabricated by changing of various SPS holding temperature and holdingtime conditions. With increasing holding temperature and holding time, the tensile stress increased.The specimen sintered at 550°C for 20 min shows σts = 1.47 MPa. Also, it was found that the SPSholding time is dominant factor than the holding temperature for sound joining of two joint materials
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 534-536 (Jan. 2007), p. 1329-1323 
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Magnetic core components are often made from laminated sheet steel, but they are difficultto manufacture in near net shape, resulting in large core losses at higher frequencies. In this study, thepure iron powder was treated with aqueous phosphoric acid to produce phosphate insulating layer onthe surface. After drying the powder, it was mixed with 0.5wt% Zn stearate and compacted in a moldwith a diameter of 20mm at 800MPa. The powder compacts were then heat treated at 500℃ for 1hour. The results showed that insulated iron powder was obtained with uniform phosphate layer bychemical reaction. With increased amount of phosphate layer, the core loss and density of compactswere decreased. It was also found that the addition of ethyl alcohol during insulating reactionresulted in improved core loss value
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  • 6
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Anelastic behavior of a 9Al2O3·2B2O3 (AlBw) whisker reinforced aluminum compositehas been examined through the measurements of the dynamic Young’s modulus and internalfriction over a temperature range of 25 to 500℃ at frequencies of 0.01, 0.05 and 0.1 Hz. A standardservo-hydraulic mechanical testing machine equipped with an infrared lamp heater was employed,but the dynamic measurement system therein was especially designed by assembling a scanninglaser extensometer and a frequency response analyzer for detecting the amplitude and phase lag ofstrain in response to a sinusoidal time-varying stress.Two peaks of internal friction were observed over the ranges 100 to 250℃ (LT peak) and 250 to400℃ (HT peak), together with marked decreases in the dynamic Young's modulus in the sametemperature ranges. From a quantitative analysis of the experimental data, it is concluded that theHT peak phenomenon is due to grain-boundary relaxation, whereas the LT peak phenomenon isascribable to the relaxation caused by stress-directed interfacial diffusion of Al atoms along thewhisker-matrix interface
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  • 7
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 539-543 (Mar. 2007), p. 452-456 
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In this study, the microsegregation effect of copper during solidification of A356.2aluminum casting alloy was evaluated by using solidification simulation and a series ofexperimental works. Electron probe micro analysis (EPMA) and the computational simulationrevealed clearly that copper as a solute element segregates during solidification and it becomesmore significant as the solidification approaches its completion. This microsegregation effect ofcopper is due to accumulated copper solute ahead of the eutectic interface during solidification.Consequently, the presence of a higher content of copper in A356.2 aluminum casting alloy causesinfluence on the solidification characteristics of the alloy and forms copper enriched phases at thelast region to solidify in the microstructures
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  • 8
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 539-543 (Mar. 2007), p. 1780-1783 
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The aims of this study ares to investigate the microstructure evolution of AZ31 Mg alloyswith normal rolling and cross rolling during the large strain hot rolling affects microstructure,texture and mechanical properties of AZ31 Mg alloy. In the microstructures of as-rolled bothsamples, twins are clearly apparent, small and recrystallized grains are visible along some grainboundary and twinned regions. The lankford values of large strain cross rolled sample obviouslydemostrate the higher average r-value and lower planar anisotropy value. The press formaility oflarge strain rolled Mg alloy might be improved due to control of texture and grain size by change ofthe rolling direction
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  • 9
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 539-543 (Mar. 2007), p. 635-640 
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 10
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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