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  • 1
    Monograph available for loan
    Monograph available for loan
    Impacts of global change of tree physiology and forest ecosystem : Proceedings of the International Conference on Impacts of Global Change on Tree Physiology and Forest Ecosystems, held 26-29 November 1996, Wageningen (1998)
    Dordrecht [u.a.] : Kluwer Academic Publishers
    Associated volumes
    Details Availability
    Call number: PIK W 511-98-0068
    In: Forestry sciences
    Type of Medium: Monograph available for loan
    Pages: 382 p.
    ISBN: 0792349210
    Series Statement: Forestry sciences 52
    Branch Library: PIK Library
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  • 2
    Electronic Resource
    Electronic Resource
    Studies on the active molecular species of the H2-receptor antagonists cimetidine and mifentidine (1987)
    s.l. : American Chemical Society
    Journal of medicinal chemistry 30 (1987), S. 208-211 
    Details
    ISSN: 1520-4804
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jm00384a036
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  • 3
    Electronic Resource
    Electronic Resource
    Pulsed laser induced epitaxial crystallization of carbon–silicon alloys (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 4118-4123 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Nonequilibrium Si1−xCx alloys produced by pulsed laser induced epitaxy from ion implanted Si have been studied in the concentration range from 0.35 to 3.8 at. % C. Films were formed by multiple energy ion implantation of carbon into {001} Si to produce nearly uniform composition profiles, followed by irradiation with a 308 nm, 30 ns excimer laser pulse. Heteroepitaxy proceeded from the underlying {001} Si through the carbon containing layer at approximately 5 m/s. Transmission electron microscopy, Fourier transform infrared spectroscopy, high resolution x-ray diffraction, ion channeling, and secondary-ion mass spectrometry were used to characterize the structure and composition. At low concentrations, the films are fully strained and the carbon is substitutional. At concentrations exceeding 1.4 at. % C, SiC precipitates were observed and the substitutional carbon concentration decreased. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.361775
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  • 4
    Electronic Resource
    Electronic Resource
    Resistless, area-selective ultrashallow P+/N junction fabrication using projection gas immersion laser doping (1996)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 68 (1996), S. 2320-2322 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The selective fabrication of ultrashallow p+/n junctions in silicon using projection gas immersion laser doping is reported. The method offers substantial improvement and simplification in junction formation to integrated circuit manufacturers, since several processing steps required for conventional doping techniques like ion implantation are eliminated. Spatially selective incorporation of boron into silicon without the use of any masking layer on the wafer surface is achieved. A pulsed excimer laser beam is patterned using a chromeless reticle and the pattern is transferred through a projection system onto a wafer that is kept in a BF3 dopant gas ambient. The depth of the fabricated junctions is 60 nm with a surface concentration of 5×1019 cm−3. The vertical and lateral distribution of boron in silicon after patterned laser processing is investigated using secondary ion mass spectroscopy (SIMS) and time-of-flight SIMS (ToF-SIMS). Vertical and lateral dopant profiles are steep and clearly resolved. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.115844
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  • 5
    Electronic Resource
    Electronic Resource
    Phenotypic plasticity of the phenology of seven European tree species in relation to climatic warming (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 18 (1995), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: To evaluate the potential responses of individual trees to climatic warming, phenological observations of clones of Larix decidua (Mill.), Betula pubescens (Ehrh.), Tilia cor-data (Mill.), Populus canescens (Ait.), Quercus robur (L.), Fagus sylvatica (L.) and Picea abies (L.) relocated over a large latitudinal range in Europe were analysed. The magnitude of the response of the clone was compared to that of genetically different trees of the same species in part of the latitudinal range, which were assumed to have adapted to their local climates. It was found that the responses of the date of leaf unfolding and the date of leaf fall in the clones to temperature were similar in magnitude to those in the genetically different trees. This demonstrates that trees possess considerable plasticity and are able to respond phenotypically to a major change in their local climate.For the clones of Larix decidua and Quercus robur the duration of the growing season may decrease with increasing temperature, because leaf fall is advanced more than leaf unfolding. In Betula pubescens and Populus canescens, leaf unfolding and leaf fall are advanced equally, whereas in Tilia cordata and Fagus sylvatica the date of leaf fall seems to be unaltered but the date of leaf unfolding advances with increasing temperature. These differences in the duration of the growing season at increased temperature may alter the competitive balance between the species.Descriptive dynamic models showed that most of the variance in the date of leaf unfolding can be accounted for by temperature. However, a generally applicable model of leaf fall based on temperature and/or photoperiod could not improved the null model, i.e. the mean date of leaf fall, because of variability in other environmental factors.The lowest temperatures around the dates of leaf unfolding and leaf fall differed among the clones. The hypothesis that the survival of the clones is curtailed by spring frosts was supported. Thus, these lowest temper-tures around leaf unfolding may represent thresholds below which the species cannot survive. It is argued that these thresholds may be a particularly sensitive means to evaluate the impact of climatic warming on the geographical distribution of tree species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3040.1995.tb00356.x
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  • 6
    Electronic Resource
    Electronic Resource
    Abstracts of papers (1985)
    Springer
    Pharmacy world & science 7 (1985), S. 293-300 
    Details
    ISSN: 1573-739X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01959206
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  • 7
    Electronic Resource
    Electronic Resource
    Sensitivity of FORGRO to climatic change scenarios: A case study on Betula pubescens, Fagus sylvatica and Quercus robur in The Netherlands (1996)
    Springer
    Climatic change 34 (1996), S. 231-237 
    Details
    ISSN: 1573-1480
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The impacts of the climate change predictions of four general circulation models (GFDL, GISS, OSU and UKMO) on net primary production (NPP) ofBetula pubescens, Fagus sylvatica and Quercus robur in The Netherlands were analysed using the process-based model FORGRO. FORGRO is a model suitable to simulate growth of managed mono-species stands. For the GCMs mentioned, both transient and equilibrium 2 × CO2 scenarios of temperature and precipitation change were evaluated and compared with responses under current climate. It was found that the NPP increases in the transient scenarios, but remains the same or declines in the 2 × CO2 scenarios. This is because respiration increases more with rising temperature than photosynthesis. During the transient scenarios this effect gradually increases, while in the 2 × CO2 scenario this effect is operating over the entire simulation period. If water limitation is taken into account, then the NPP of the reference scenario is reduced. In both the transient and 2 × CO2 scenarios mis water limitation is annulated, resulting in a stronger response of NPP compared to the situation without water limitation. This enhancement of the response is most pronounced in the transient scenario due to the gradual effect of temperature on respiration. Similar results were obtained with a version of FORGRO in which the photosynthesis module of HYBRID (PGEN) is incorporated, although the response in FORGRO-PGEN is usually higher than that of FORGRO. This is because the response of photosynthesis to CO2 rises with increasing temperature as defined in the PGEN-model, but not according to FORGRO.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00224634
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  • 8
    Electronic Resource
    Electronic Resource
    Interlaboratory studies to improve the quality of mercury determination in seawater (1996)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 356 (1996), S. 411-415 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Determinations of pollutants in various matrices are routinely performed by a number of organizations for monitoring contamination levels of the marine environment. Projects for improving the quality of determinations of trace metals in seawater have been successfully concluded within the scope of the BCR-Programme (now renamed Standards, Measurements and Testing Programme) of the European Commission; however, the determination of total mercury could not be considered at this stage both because of the poor analytical performances observed and the unsuitability of the containers (polyethylene) used for the seawater certified reference material (CRM 579). A specific project has therefore been organized to improve the state of the art of Hg determination in seawater and to investigate the best way of storing a candidate CRM. Two interlaboratory studies have been concluded and a certification campaign has now started. The materials have been collected in the Southern Bight of the North Sea, carefully prepared (filtered and acidified) and their homogeneity and stability were verified. This paper presents the results of the two interlaboratory studies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s0021663560411
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  • 9
    Electronic Resource
    Electronic Resource
    Certified reference material for the quality control of cadmium, copper nickel and zinc determination in estuarine water (CRM 505) (1996)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 354 (1996), S. 397-404 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Analyses of estuarine water samples are routinely carried out by a number of laboratories to monitor the level of environmental contamination by toxic substances, e.g. heavy metals. A series of interlaboratory studies has been organised by the Community Bureau of Reference, BCR (now renamed Standards, Measurements and Testing Programme) to improve the quality of the determinations of selected trace metals in estuarine water samples. The improvement achieved allowed to produce a reference material (CRM 505) which was certified for its content of Cd, Cu, Ni and Zn. Further improvements were considered to be necessary for the certification of other trace elements, e.g. Pb. This material was collected in the Tagus Estuary, carefully prepared (filtered and acidified) and its homogeneity and long term stability were verified. This paper presents the work performed for the certification of Cd, Cu, Ni and Zn. Indicative values are reported for As, Co, Fe, Mn, Pb and V.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s0021663540397
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  • 10
    Electronic Resource
    Electronic Resource
    Diphenols in hemolymph and cuticle during development and cuticle tanning of Periplaneta americana (L.) and other cockroach species (1988)
    New York, NY [u.a.] : Wiley-Blackwell
    Archives of Insect Biochemistry and Physiology 7 (1988), S. 13-28 
    Details
    ISSN: 0739-4462
    Keywords: catecholamine ; dopamine ; sclerotization ; dopamine sulfate ; catechol ; Chemistry ; Food Science, Agricultural, Medicinal and Pharmaceutical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: Diphenolic compounds in cockroach hemolymph and cuticle were extracted with 1.2 N HCI, partially purified by alumina adsorption, and analyzed by liquid chromatography. Dopamine (DA) is the major catecholamine in hemolymph of Periplaneta americana, Blatta orientalis, Blattella germanica, Gromphadorhina portentosa, and Blaberus craniifer at adult ecdysis, while N-acetyldopamine (NADA) predominates in hemolymph of Leucophaea maderae. In P. americana, NADA is the second most abundant catecholamine, while N-β-alanyldopamine (NBAD), norepinephrine (NE), 3,4-dihydroxyphenylalanine, 3,4-dihydroxyphenylethanol, 3,4-dihydroxyphenylacetic acid, and 3,4-dihydroxybenzoic acid occur in lesser quantities. Catecholamines occur mainly as acid labile conjugates in hemolymph. Dopamine, conjugated primarily as the 3-sulfate ester, increases in hemolymph from 0.1 to 0.8 mM during the last instar. Concentrations decrease by 75% in pharate adults, partially because of an increase in hemolymph volume. A second smaller peak of DA sulfate occurs after ecdysis followed by a rapid disappearance as the cuticle tans. A conjugate of catechol (o-dihydroxybenzene) is also present in relatively high concentrations at all ages examined. In cuticle, N-β-alanylnorepinephrine accumulates during the early period of adult tanning, while NBAD, NADA, N-acetylnorepinephrine, and DA increase more slowly. The N-β-alanyl and N-acetyl derivatives of DA and NE occure in relatively high concentrations in tanned cutical of P. americana and probably play an important role in the stablization process.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/arch.940070103
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