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  • 1
    Electronic Resource
    Electronic Resource
    Equation-of-state, shock-temperature, and electrical-conductivity data of dense fluid nitrogen in the region of the dissociative phase transition (1991)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 94 (1991), S. 2244-2257 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The dissociative phase transition of fluid nitrogen at pressures in the range 30–110 GPa (0.3–1.1 Mbar), temperatures in the range 4000–14 000 K, densities up to 3.5 g/cm3, and internal energies up to 1 MJ/mol was investigated by shock compression. Equation-of-state, shock-temperature, and electrical-conductivity experimental data are presented and analyzed in detail.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.459895
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  • 2
    Electronic Resource
    Electronic Resource
    Raman spectrum and structure of silica aerogel (1985)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 82 (1985), S. 2472-2476 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Raman spectra have been obtained from silica aerogel, a porous low-density material having grain sizes near 70 A(ring). The Raman spectra are qualitatively similar to those from fused silica, thus indicating that the aerogel is amorphous. However, a greatly intensified peak (relative to ordinary fused silica) occurs near 478 cm−1 and is assigned to small rings, e.g., six (3-SiO) or eight (4-SiO) membered. Such rings may be more important in the aerogel than in fused silica, but the observed absence of the 600 cm−1 ring peak indicates that only one ring type, e.g., eight membered, is predominant. Other marked frequency and intensity changes in the Si–O–Si bending and Si–O stretching region, compared to fused silica, were also observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.448292
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  • 3
    Electronic Resource
    Electronic Resource
    Healthy River Habitats Fit for Wildlife: Deriving the Physical Dimension (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Water and environment journal 14 (2000), S. 0 
    Details
    ISSN: 1747-6593
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Water quantity, water quality and physical structure determine the ability of a river's ecosystem to function and therefore its fitness for wildlife. This paper describes how a system for assessing the physical dimension of river-habitat quality has been developed in the UK. The paper also highlights (a) the main features and principles of ‘river habitat survey’, (b) how the method has already been used to help river management, and (c) some future uses, including the setting of habitat targets.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1747-6593.2000.tb00255.x
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  • 4
    Electronic Resource
    Electronic Resource
    Severe learning disability and psychological handicap - J. Clements: Wiley, Chichester (1987). x + 186 pages. £17.50.
    Amsterdam : Elsevier
    Behaviour Research and Therapy 26 (1988), S. 541 
    Details
    ISSN: 0005-7967
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine , Psychology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-7967(88)90165-9
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  • 5
    Electronic Resource
    Electronic Resource
    Raman spectrum and structure of thermally treated silica aerogel (1986)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 85 (1986), S. 771-776 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Raman spectra have been obtained from untreated SiO2 aerogel at 25 °C, and after vacuum heating between 350 and 620 °C. The untreated aerogel displays a strong Raman peak near 478 cm−1 due to eight-membered (4-SiO) surface rings, but no measurable intensity at 600 cm−1 from six-membered (3-SiO) rings. However, an intense 600 cm−1 peak develops upon heating between 350 and 620 °C as the 478 cm−1 peak is replaced by a 490 cm−1 peak characteristic, in fused silica, of eight-membered internal rings. Vibrations involving surface CH3O groups disappear along with the fluorescence at 350 °C, well before the 478 cm−1 Raman intensity is gone. The untreated aerogel is protected from water absorption by the hydrophobic surface methoxy groups, but the thermally treated aerogel reacts readily to form Si–OH groups as shown by the 970–980 cm−1 Si vs OH and 3750 cm−1 surface OH stretches. Raman contour shapes near 800 cm−1 and between 900–1300 cm−1 are sensitive to the conditions of thermal treatment. The Hokmabadi–Walrafen vibrational correlation relating decrease of the mean Si–O–Si bridging angle to increase of the mean Si–O bond length is obeyed for both treated and untreated aerogels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.451284
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  • 6
    Electronic Resource
    Electronic Resource
    Equation of state and electrical conductivity of "synthetic Uranus," a mixture of water, ammonia, and isopropanol, at shock pressure up to 200 GPa (2 Mbar) (1997)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 107 (1997), S. 9096-9100 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Equation-of-state, temperature, and electrical-conductivity data were measured for a solution of water, ammonia, and isopropanol at shock pressures up to 200 GPa. The chemical composition is similar to that of the fluid mixture thought to be the major constituent of the giant planets Uranus and Neptune. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.475200
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  • 7
    Electronic Resource
    Electronic Resource
    Macrophytic vegetation of the River Swale, Yorkshire (1977)
    Oxford, UK : Blackwell Publishing Ltd
    Freshwater biology 7 (1977), S. 0 
    Details
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SUMMARY. An account is given of the distribution down the River Swale in summer 1976 of 132 species of photosynthetic plants which are recognizable macroscopically. Some environmental data are included. The river may be regarded as falling into three zones, both with regard to its physical features and its type of vegetation. The upper zone has rocky substrata, fast flows and a macrophytic vegetation largely of bryophytes; the middle zone has unconsolidated substrata and the macrophytic vegetation is relatively sparse; the lower zone is silted and the macrophytic vegetation consists largely of angiosperms. The flora of the Swale is compared with that of the Tees, since eventually the former is likely to receive water from the latter as part of a major water transfer scheme. Eleven species of ‘river’ angiosperm which are present in the Tees above the projected abstraction point are absent from the Swale above the inflow point.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2427.1977.tb01706.x
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  • 8
    Electronic Resource
    Electronic Resource
    The macrophytic vegetation of the River Tees in 1975: observed and predicted changes (1977)
    Oxford, UK : Blackwell Publishing Ltd
    Freshwater biology 7 (1977), S. 0 
    Details
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SUMMARY. An account is given of the distribution of macrophytes in the River Tees and its tributaries, north-east England, together with a critical discussion of the problems involved in recording data in a form which can be used for monitoring long-term changes of vegetation in rivers. Among the conventions and methods adopted in the present study are an attempt to define the vertical limits of the river sensu strictu as opposed to the bank, the extension of the term macrophyte to include as many visually obvious photosynthetic organisms as possible, the use of a check-list prepared in advance which contains a wider range of species than are actually expected for the river, and the collection of two different types of standard record for each 0.5 km length of river. The Tees has been the subject of intermittent observations on its vegetation for some 45 years. The most obvious change has taken place since 1965, with a substantial upstream spread of four submerged angiosperm species. Potamogeton crispus, Zannichellia palustris and Myriophyllum spicatum were previously present only in the lower reaches of the Tees, and have spread 25, 9.5 and 4.5 km respectively upstream from their previously known most upstream localities. Ranunculus penicillatus var. calcareus is an apparent invader to the river. It seems probable that these changes have taken place since 1971 as a result of regulation of the Tees by Cow Green Reservoir. Further changes are predicted with the advent of water transfer from the Tyne to Tees around 1980, because at least twenty-six macrophytes are known to be present in the former river that are either absent or confined to the lowest stretches of the latter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2427.1977.tb01656.x
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  • 9
    Electronic Resource
    Electronic Resource
    Phytobenthos of the River Tees and its tributaries (1981)
    Oxford, UK : Blackwell Publishing Ltd
    Freshwater biology 11 (1981), S. 0 
    Details
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SUMMARY. A standard method is given for describing plant communities in fast-flowing streams and rivers. This involves the selection of a representative 10-m length of stream (termed a reach) which can be re-located exactly. Various estimates of the relative areas covered by different physiognomic forms and the relative proportions of species present are then combined to give a ‘semi-quantitative’ account, which can be compared with data collected at other sites or times. The method has been applied to six sites on the River Tees system. A site below Cow Green reservoir with markedly regulated flows, differs from the others in various ways. Bryophytes show a greater cover here than elsewhere throughout the year and a conspicuous cover of Phormidium occurs in autumn. Filamentous green algae of many different species are abundant at this site in late summer and early autumn. At the most downstream site where such seasonal growths also occur, a single species, Cladophora glomerata, is dominant. Conspicuous spring diatom ‘bursts’ occurred at the two upstream sites and a month later at the two downstream sites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2427.1981.tb01250.x
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  • 10
    Electronic Resource
    Electronic Resource
    Equation of state of Al, Cu, Mo, and Pb at shock pressures up to 2.4 TPa (24 Mbar) (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 2981-2986 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Equation-of-state data and corresponding first-principles theory for the metals Al, Cu, Mo, and Pb are reported over the shock pressure range 0.4–2.4 TPa (4–24 Mbar). Strong shock waves were generated by nuclear explosions and a two-stage light-gas gun. The experimental data occur in the hot liquid-metal regime, where condensed-matter theory applies but with unusually large thermal components to the equation of state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.348611
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