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  • 1
    Electronic Resource
    Electronic Resource
    Crystallization and preliminary diffraction analysis of porcine heart mitochondrial NADP+-dependent isocitrate dehydrogenase (1996)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 52 (1996), S. 1024-1026 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Isocitrate dehydrogenases [isocitrate:NAD(P)+ oxidoreductase (decarboxylating), E.C. 1.1.1.42] are ubiquitous metabolic enzymes which occur in all living organisms. The NADP+- dependent mitochondrial isocitrate dehydrogenase from pig heart has been crystallized from polyethylene glycol/sodium sulfate mixtures in the presence of Mg2+ and isocitrate. The crystals belong to space group C2 with a = 137.0, b = 113.4, c = 65.0 Å and β = 98.5°, and diffract to at least 2.4 Å resolution. There are two protein monomers per asymmetric unit which are related by non-crystallographic twofold symmetry.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444996006154
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  • 2
    Electronic Resource
    Electronic Resource
    Silicon nitride nano-powders prepared by double-beam optical stimulation
    Amsterdam : Elsevier
    Physica B: Physics of Condensed Matter 193 (1994), S. 201-205 
    Details
    ISSN: 0921-4526
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0921-4526(94)90013-2
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  • 3
    Electronic Resource
    Electronic Resource
    The primary structure of human apolipoprotein A-IV
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Lipids and Lipid Metabolism 1002 (1989), S. 231-237 
    Details
    ISSN: 0005-2760
    Keywords: Amino acid sequence ; Apolipoprotein A-IV ; DNA sequence ; HDL ; Lecithin-cholesterol acyltransferase ; Sequence heterogeneity
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0005-2760(89)90292-0
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  • 4
    Electronic Resource
    Electronic Resource
    NMR study of low-pressure ^1^2^9Xe gas
    Amsterdam : Elsevier
    Chemical Physics Letters 194 (1992), S. 440-445 
    Details
    ISSN: 0009-2614
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0009-2614(92)86079-W
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  • 5
    Electronic Resource
    Electronic Resource
    Electrical and structural properties of the YBCO superconducting-semiconducting interface
    Amsterdam : Elsevier
    Physica B: Physics of Condensed Matter 194-196 (1994), S. 2143-2144 
    Details
    ISSN: 0921-4526
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0921-4526(94)91571-7
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  • 6
    Electronic Resource
    Electronic Resource
    Femtosecond reflectivity of 60 K Y-Ba-Cu-O thin films (1994)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 64 (1994), S. 1150-1152 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report systematic studies of the femtosecond transient reflectivity at 2 eV in partially oxygen-depleted Y-Ba-Cu-O thin films exhibiting the resistive superconducting transition at 60 K. Our measurements, performed at room temperature, reveal that in 60 K films, the Fermi level in the Cu-O2 plane lies approximately 2 eV above the filled copper d9/d10 band. By mapping the transient optical response across a 1 cm2 film, we show that the position of the Fermi level is very sensitive to the apparent local variations of the film oxygen content, which gives rise to dramatically different transient optical responses. We also observe a strong transient reflectivity dependence on intensity, which can be attributed to the shift of the Fermi level caused by nonequilibrium hole heating.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.110835
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  • 7
    Electronic Resource
    Electronic Resource
    Laser patterning of Y-Ba-Cu-O thin-film devices and circuits (1994)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 64 (1994), S. 643-645 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report our studies on electrical properties of Y-Ba-Cu-O test devices and circuits fabricated using a laser-writing patterning technique. The patterning procedure is noninvasive, does not require a patterning mask, and does not contaminate nor damage the surface of patterned films. Our laser-written, oxygen-rich lines (typically 4–100 μm wide) possess excellent superconducting properties with zero resistivity at 89.5 K and critical current densities of above 2 MA/cm2 at 77 K. On the other hand, oxygen-poor regions are semiconducting and exhibit thermally activated transport, well described by a three-dimensional, variable-length hopping process. Their resistance below 100 K is above 10 MΩ/square. A number of test structures patterned by laser writing, such as a microbridge, coplanar transmission line, open-ended microwave resonator, photoconductive switch, and Y-Ba-Cu-O field-effect transistor, have been presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.111075
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  • 8
    Electronic Resource
    Electronic Resource
    Tissue distribution and kininogen gene expression after acute-phase inflammation
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/General Subjects 964 (1988), S. 329-339 
    Details
    ISSN: 0304-4165
    Keywords: Inflammation ; Kininogen induction ; Kininogen mRNA ; Monoclonal antibody ; Tissue distribution
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0304-4165(88)90033-5
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  • 9
    Electronic Resource
    Electronic Resource
    Historical development of agroforestry in China (1995)
    Springer
    Agroforestry systems 30 (1995), S. 277-287 
    Details
    ISSN: 1572-9680
    Keywords: agriculture ; history ; sericulture ; slash-and-burn ; small-farming economy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract In China both agriculture and agroforestry originated in forests and developed side by side from their very beginnings. As revealed by archaeological evidence from ancient times, ancestral Chinese inhabited forests where they sheltered themselves from external hazards and lived on the edible parts of plants and animals through hunting and gathering activities. As early as the New Stone Age (7000–8000 years B.C.), fire was commonly used to burn the forests for slash-and-burn cultivation, which is a primitive form of agroforestry. Along with the rapid growth of population, the annexing of tribes, the collapse of clan society and the development of the slavery system, the nomadic mode of slash-and-burn farming evolved into settlement farming in the Xia Dynasty (2000-1600 B.C.). Peasants then engaged in settled cultivation. During the Shang and West Zhou Dynasty (1600-800 B.C.), perpetual settlement farming encouraged the development of private land-ownership. Peasants planted trees in or around the crop fields and grew fruit plants, vegetables and farmed domestic animals in their home yards for self-sufficiency. Since then, various forms of agroforestry have gradually developed and laid the fundamental framework of the Chinese small-farming economy for more than 3000 years. There has been a rapid growth of population in China over since the 1950s. At the same time, the area of arable land has decreased drastically and the environment has degraded rapidly as industrial development has taken place. The traditional labour-consuming and ineffective agroforestry management practices have not adapted to the current situation. In view of economic, ecological and social benefits, conversion of mono-biological production into a trinity system of agriculture, processing and marketing is suggested and planned experimentally. Such a management system, known as modern agroforestry, could be very beneficial to the development of modern China's rural economy and environmental conservation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00708926
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  • 10
    Electronic Resource
    Electronic Resource
    Quantitative Flow Visualization (1998)
    Springer
    Meccanica 33 (1998), S. 503-516 
    Details
    ISSN: 1572-9648
    Keywords: Flow visualization ; Speckle photography ; Particle image velocimetry ; Turbulence ; Fluid mechanics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Modern developments in laser and computer technology, electronic cameras, and digital image processing techniques allow to generate planar distributions of quantitative data in turbulent flows. Large amounts of data can be processed easily and analyzed statistically. With these tools, it is possible to quantitatively visualize turbulent coherent structures, even in flows of high Reynolds number, and measure characteristic spatial quantities like vorticity, length scales, spatial correlation functions, etc. These potentials in analyzing spatial characteristics of turbulent flows are demonstrated with two different methods of quantitative flow visualization: speckle photography as a representative of the line-of-sight methods, and particle image velocimetry belonging to the methods that rely on the scattering of laser light from tracer particles. Sommario.I moderni sviluppi nelle tecnologie del laser e dei computers, delle telecamere elettroniche e le tecniche di analisi digitale delle immagini permettono di ottenere distribuzioni quantitative, in un piano, di dati relativi a flussi turbolenti. Una gran quantità di dati può essere con facilità analizzata statisticamente. Con questi mezzi è possibile visualizzare quantitativamente strutture coerenti turbolente anche in flussi da alto numero di Reynolds, e misurare caratteristiche spaziali, come vorticità scale e funzioni di correlazione. Questa potenzialità di studiare caratteristiche spaziali di flussi turbolenti viene qui mostrata per due differenti metodi di visualizzazione quantitativa: fotografia ‘speckle’ e PIV (particle image velocimetry).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004372627123
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