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  • 1
    Electronic Resource
    Electronic Resource
    THE BAVARIAN MILK SUPPLY COMPANY. (1931)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of public and cooperative economics 7 (1931), S. 0 
    Details
    ISSN: 1467-8292
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-8292.1931.tb01282.x
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  • 2
    Electronic Resource
    Electronic Resource
    THE AGRICULTURAL UNDERTAKINGS OF THE CITY OF BERLIN (1929)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of public and cooperative economics 5 (1929), S. 0 
    Details
    ISSN: 1467-8292
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-8292.1929.tb01253.x
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  • 3
    Electronic Resource
    Electronic Resource
    MUNICIPALLY AIDED THEATRES AND ORCHESTRAS IN GERMANY (1929)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of public and cooperative economics 5 (1929), S. 0 
    Details
    ISSN: 1467-8292
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-8292.1929.tb01742.x
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  • 4
    Electronic Resource
    Electronic Resource
    THE NEW HOSPITAL BUILDINGS AT FREIBURG I/BREISGAU (1928)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of public and cooperative economics 4 (1928), S. 0 
    Details
    ISSN: 1467-8292
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-8292.1928.tb01245.x
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  • 5
    Electronic Resource
    Electronic Resource
    THE MUNICIPAL UNDERTAKINGS OF FREIBURG i/B. (1931)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of public and cooperative economics 7 (1931), S. 0 
    Details
    ISSN: 1467-8292
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-8292.1931.tb01269.x
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  • 6
    Electronic Resource
    Electronic Resource
    Cyclic Changes in Water Balance and Transpiration of Cotton Leaves in a Steady Environment (1965)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 18 (1965), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1965.tb06935.x
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  • 7
    Electronic Resource
    Electronic Resource
    Electronic photodissociation spectroscopy of isolated IrX62− (X=Cl,Br) (2002)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 117 (2002), S. 2635-2644 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Photodissociation spectra of free doubly charged anions IrX62− (X=Cl,Br) were measured in the photon energy range from 1.5 to 2.9 eV. Both data sets show the same features as the spectra of the respective aqueous solutions. Compared to solution, the gas phase absorption bands of IrBr62− are redshifted by 0.01–0.15 eV. For IrCl62− no such shift could be observed. Photodissociation of IrBr62− results in the formation of Br−, IrBr4−, and IrBr5−. Fluence dependent measurements of fragment formation as well as parent ion depletion, allowed inferences regarding the dissociation pathway and the inner barrier height for the dissociation process which was estimated to be 1.6±0.2 eV. From measurements of the kinetic energy released upon fragmentation into monoanions, we estimate the outer barrier height to be 2.2±0.2 eV. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1490921
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  • 8
    Electronic Resource
    Electronic Resource
    Periodic Nocturnal Stomatal Opening of Citrus in a Steady Environment (1971)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 25 (1971), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: In a steady environment, leaf stomates of sour orange (Citrus aurantium L.) remained closed in the dark, whereas those of rough lemon (Citrus jambhiri Lush) underwent several 20-minute periods of pronounced opening at intervals of 60–85 minutes. Peak nocturnal opening occurred about 10 minutes after the cycle began, as shown by a change in leaf diffusion resistance from 60 s cm−1 (closed) to 2 s cmminus;1 (open). This minimal leaf resistance equals that obtainable in rough lemon in strong illumination (26 kilolux).The transitory stomatal opening detected by leaf resistance measurements was corroborated by measurements of leaf temperature and leaf thickness. During nocturnal opening, leaf temperature was 2°C below the value representing non-cycling periods. Also, minimal leaf thickness coincided with maximal stomatal opening.The triggering mechanism for nocturnal stomatal opening appears to originate within the plant, since the environmental factors of air temperature, humidity, carbon dioxide concentration, and substrate (aerated water culture) were held steady.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1971.tb01478.x
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  • 9
    Electronic Resource
    Electronic Resource
    The compatibility of epoxy-based printed circuit boards with lead-free assembly (2005)
    Bradford : Emerald
    Circuit world 31 (2005), S. 3-13 
    Details
    ISSN: 0305-6120
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Purpose - Aims to explain the main requirements for printed circuit boards (PCBs) and to determine the survival rate of boards in lead-free assembly. Design/methodology/approach - The first two main requirements are the survival of 5-6 cycles lead free reflow with peak temperatures of up to 260°C and an identical or even better board reliability of such boards compared to todays eutectic soldered ones. In a first series of tests the influence of base materials, reflow temperature gradient and peak temperature on PCB survival rate are investigated. Thermo-mechanical data of different epoxy-based materials are compared to survival rate investigations using repeated reflow tests. The impact of PCB manufacturing and design on the lead free performance is discussed. A second series of investigations is air-to-air life cycle tests of daisy chain boards out of different epoxy-based materials with varying preconditioning were done. Findings - The tests showed that dicy cured epoxy base materials are not able to withstand the thermal stress of the mentioned soldering steps. Board design and the heating gradient in reflow also influence the assembly performance. Thermal cycling tests (air-to-air), showed clearly the effect of reflow temperature and number of reflow cycles on through-hole reliability. There was no significant impact of z-axis-expansion on the through-hole failure rate in air-to-air cycling. Originality/value - Provides further information on the lead-free assembly of PCBs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/03056120510603080
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  • 10
    Electronic Resource
    Electronic Resource
    Properties of new printed circuit board base materials (2002)
    Bradford : Emerald
    Circuit world 28 (2002), S. 38-45 
    Details
    ISSN: 0305-6120
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Currently, the most widely used Printed Circuit Board (PCB) base material is the glass reinforced epoxy known as FR-4. To improve the electrical or the thermomechanical performance of PCBs, there are two possibilities from a material standpoint: a modification or change of the resin system and a change of the reinforcement. Currently, there are a number of resins used for high performance PCB base materials. These resin systems offer higher Tgs and lower z-axis-expansions for improved through hole reliability. Non-halogenated epoxy resin systems are offered for the production of green PCBs. In addition to new resins, new reinforcements are available for use in PCBs. Which can improve the electrical parameters of the base material and the x and y axis- thermal expansion also changes with the use of those reinforcements. This paper compares the thermomechanical and electrical parameters of some new high performance and green base materials with the glass reinforced epoxy materials commonly used in both high layer count boards and microvia applications.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/03056120210431534
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