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  • 1
    Electronic Resource
    Electronic Resource
    Thermoelectricity: Science and Engineering. (1962)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 84 (1962), S. 690-691 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00863a051
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  • 2
    Electronic Resource
    Electronic Resource
    Experimental apparatus for measuring noise in MOSFETs on silicon wafers (1988)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 59 (1988), S. 955-959 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We present an apparatus for measuring noise in MOSFETs on silicon wafers. The system can measure noise accurately down to 10 nV/Hz1/2 and has a useful bandwidth of 0.01 Hz to 30 kHz. The drain current, source voltage, gate voltage, and the temperature (77 to 400 K) are computer controlled. We have designed a chip with both N and P channel test transistors in a range of sizes and geometries. The chip also includes a diode for temperature measurement. The wafers are processed in a controlled industrial environment giving reproducible device characteristics. Schematics for an ADC-DAC high-performance card offering many programmable features are also presented. A very-low-noise preamplifier working at liquid-nitrogen temperature is also described. The system is not restricted to measuring MOS transistors; any passive or active device can be measured making only simple changes to the bias circuitry. We also present results obtained with a typical MOSFET.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1139757
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  • 3
    Electronic Resource
    Electronic Resource
    The Photographic Latent Image as a Nucleation Process from the Solid Phase. (1952)
    s.l. : American Chemical Society
    Industrial & engineering chemistry 44 (1952), S. 1331-1335 
    Details
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ie50510a042
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  • 4
    Electronic Resource
    Electronic Resource
    Spawning of farmed Atlantic salmon, Salmo salar L., in the second year after their escape (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 24 (1993), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract. The frequency of escaped farmed salmon in the River Polla, Scotland was estimated at spawning in 1990, the second year after the escape of 184000 fish from a sea-cage site nearby. Fourteen of 73 spawners examined were of farmed origin. In only six of these fish were scale growth patterns consistent with their being part of the documented escape. All of these fish carried the pigment canthaxanthin. Fifty-nine redds were constructed at spawning. Five of 54 redds sampled contained embryos or alevins bearing canthaxanthin. The frequency of fry bearing canthaxanthin was determined in samples obtained from the neighbouring Rivers Hope and Dionard following spawning in both 1989 and 1990. There was no evidence of substantial returns of salmon from the documented escape to these rivers. These findings and those of a previous study suggest that more than 95% of those fish which returned to rivers near the site of the documented loss did so in the first year after escape and that fewer than 0·5% of those fish which escaped returned within the 2 years of study.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2109.1993.tb00630.x
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  • 5
    Electronic Resource
    Electronic Resource
    Escaped farmed Atlantic salmon, Salmo salar L., feeding in Scottish coastal waters (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 23 (1992), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Escaped reared salmon, Salmo salar L., were distinguished from wild salmon in the catch of a coastal salmon fishery on the west coast of Scotland. The stomach contents of 54 escaped fish were examined to determine their recent feeding history and 19 (35%) were found to contain food. The predominant prey were juvenile whiting, Merlangius merlangus (L.), unidentified Gadidae and sandeels (Ammodytidae), although other fish and invertebrates, mainly post-larval hermit crabs (Paguridae), were recorded. All these prey are pelagic or semi-pelagic. These observations demonstrate that escaped salmon feed on natural prey in coastal waters and extend our knowledge of the diet of salmon in their marine phase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2109.1992.tb00814.x
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  • 6
    Electronic Resource
    Electronic Resource
    Reared Atlantic salmon, Salmo salar L., in the catches of a salmon fishery on the western coast of Scotland (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 23 (1992), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract. Atlantic salmon, Salmo salar L., of reared origin were distinguished from putative wild fish In the catch of a single salmon fishery in western Scotland. Fish in seven day-catches made in 1990 totalling 403 individuals were assessed formally for the presence of residual fin damage resulting from culture. Fifty-eight (22%) were classed as being of reared origin, on the basis of previously established criteria. Additional examination of 54 of these fish showed the pigment canthaxanthin to be detectable in the tissues of 35 (65%), which were therefore classed as having escaped from sea cages. Among the fish in which canthaxanthin could not be detected, a further 17 individuals (31% of the total) were classed as having escaped from sea cages on the basis of scale growth patterns. Scale growth patterns in the remaining two fish (4% of the total) were consistent with their having grown in a hatchery before escape or release.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2109.1992.tb00782.x
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  • 7
    Electronic Resource
    Electronic Resource
    Spawning of escaped farmed Atlantic salmon, Salmo salar L., in western and northern Scottish rivers: egg deposition by females (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 24 (1993), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract. In 1991, the progeny of female Atlantic salmon, Salmo salar L., were sampled at emergence from sites in 16 rivers in western and northern Scotland. The progeny of farmed females that had escaped from sea-cages were identified by detecting the presence of maternal canthaxanthin in the juveniles’ pigment load. Canthaxanthin was detected among fish sampled from 14 of the 16 rivers examined. Overall, 109 of the 2373 fry sampled carried canthaxanthin with an average frequency over all the rivers examined of 5·1%. This value will underestimate the real frequency of occurrence of the progeny of escaped farmed salmon: some escapees do not contain canthaxanthin and male fish do not contribute to the pigment load of their progeny.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2109.1993.tb00642.x
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  • 8
    Electronic Resource
    Electronic Resource
    Thyroid hormone levels in Atlantic salmon (Salmo salar) during the return migration from the ocean to spawn (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 42 (1993), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Serum thyroid hormone levels were determined in adult Atlantic salmon (Salmo salar) of both sexes caught in the ocean and at a sequence of locations on their return migration to spawn. Tri-iodothyronine (T3) levels were greatest in fish caught in coastal or estuarine waters or in a river near head-of-tide. T3 levels were lower in fish caught in rivers throughout the angling season and lowest in those captured entering a tributary near spawning. Thyroxine (T4) levels were lowest in immature fish captured in the ocean in winter but raised in fish captured in spring; many of the latter group showed endocrine evidence of their becoming sexually mature. T4 levels were greatest in fish captured in coastal waters and progressively lower in fish captured in an estuary, near head-of-tide and in rivers. T4 levels in fish captured at tributary entry near spawning exceeded those in fish caught in rivers earlier in the year. In general, these data support the hypothesis that motor activity level in migrant fish is a determinant of thyroid status.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1993.tb00329.x
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  • 9
    Electronic Resource
    Electronic Resource
    Flow Requirements of Spawning Atlantic Salmon in an Upland Stream: Implications for Water-Resource Management (2001)
    Oxford, UK : Blackwell Publishing Ltd
    Water and environment journal 15 (2001), S. 0 
    Details
    ISSN: 1747-6593
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: The spawning sites selected by female Atlantic salmon (Salmo salar) were surveyed over three consecutive years in the Girnock Burn, Aberdeenshire, Scotland. Discharge was calculated for each spawning site to assess within-catchment variation in spawning discharge selection. In total, 428 incidents of female spawning activity were logged at 48 sites. Fish selected relatively high flows in which to spawn, with the lowest utilised discharge being equivalent to the burn's 50 percentile flow.The results emphasise the importance of relatively high flows during the spawning season and, more specifically, a range of flows which ensures that sites are distributed as widely as possible and are accessible and suitable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1747-6593.2001.tb00296.x
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  • 10
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    Unknown
    Photographic Plates for Use in Nuclear Physics (1948)
    American Physical Society
    Details
    Publication Date: 1948-09-01
    Print ISSN: 0031-899X
    Electronic ISSN: 1536-6065
    Topics: Physics
    Published by American Physical Society
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