ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of mathematical sciences 81 (1996), S. 2905-2911 
    ISSN: 1573-8795
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract In 1984, C. M. Newman posed the problem of proving the invariance principle in distribution for associated random fields (i. e., fields satisfying the so-called FKG-inequalities)X={Xj, j∈Zd} when d≥3. The solution of this problem for wide-sense stationary associated random fields is obtained here under slightly more restrictive conditions than those used by C. M. Newman and A. L. Wright for the strictly stationary case where d=1 and d=2.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1573-5095
    Keywords: bud development ; cold hardiness ; cold storage ; mitotic index ; outplanting performance ; plant handling ; plant quality
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The relationship between physiological status and theability to withstand the stresses of lifting, coldstoring and planting was evaluated from 1992–1995 inSitka spruce (Picea sitchensis (Bong.) Carr.)2 + 1 transplants of Washington/northern Oregon originsgrowing in Ireland. Needle primordium initiationcontinued until later and cold hardiness developedmore slowly in the mild lifting season of 1994/95. The seasonal decline in shoot mitotic activity wasgenerally similar each year, with apices becominginactive in December. Cell divisions in roots ceasedin November or December. Shoots began to deharden inearly February each year, but the rates of dehardeningwere slow until March. Cell divisions in root apicesresumed in February each year, compared with March forshoot apices. The vitality of the seedlings followingcold storage was high for most lift dates except theOctober and April dates. The period of highest stressresistance (as indicated by cold hardiness levels) forlifting for immediate planting was from about lateNovember/early December to early March; shoots werecold hardy to about −20 °C (LT50) at thistime. Seedlings could be lifted and cold stored (1–2 °C)until May/June when shoots were cold hardyto about −30 °C or lower, which coincided withthe period from mid- to late December until March.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1573-5036
    Keywords: root biomass ; shoot biomass ; Sitka spruce (Picea sitchensis) ; cultivation ; mole drainage ; mounding ; surface water gley
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract In Ireland much of the land available for plantation establishment requires some degree of soil cultivation and drainage to improve its suitability for tree growth. The method of cultivation and drainage normally varies depending upon the soil type and its drainage characteristics. Little research has been carried out on the impact of practices such as mounding and mole drainage upon rooting and biomass production in young crops. The research reported in this paper was carried out on four sites where the general soil type was surface water gley. Three of the sites studied were afforestations on old farmland, while the fourth site was a reforestation of a windblown stand. The cultivation methods investigated included mounding, mole drainage with mounds, mole drainage only and ripping. Sitka spruce trees ranging in age from five to thirty years were excavated from these experimental sites to describe the impact of different soil cultivation techniques upon root architecture and above and below ground biomass production. The results showed that while the effect of mound drainage upon water table level varied from site to site, the establishment of trees on mounds led to an increase in above and below ground biomass production. Mole drainage of these sites without mounds, did not lead to any increase in root or shoot development when compared with trees growing on uncultivated/undrained ground.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1573-6822
    Keywords: dipalmitoyl phosphatidyl choline ; kaolin ; P388D1 ; quartz ; surfactant
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The macrophage-like cell line, P388D1, was exposed to dipalmitoyl lecithin (DPL)-coated respirable quartz and kaolin, and the disappearance of the DPL was monitored for up to 9 days. The coating was removed rapidly at first (about 50% in the first 3 days) and then more slowly over the remaining 6 days, until about 30% remained on day 9. The rate of DPL digestion was independent of the type of dust and the amount of coated dust within the cell, indicating the existence of an extracellular phospholipase activity. This extracellular phospholipase activity was partially characterized. It was sensitive to temperatures above 56°C, the presence of EDTA, the action of the proteases trypsin and proteinase K, and pH, being active at pH 7 but not at pH 5. This is consistent with reports in the leterature of the existence of an extralysosomal phospholipase which is active at pH 7 and dependent on the presence of divalent metal ions. There was a dust-dependent difference in the extracellular rate of DPL digestion from quartz and kaolin. The coating was removed more slowly from the kaolin than it was from quartz. The removal of the DPL coating seen in the presence of cells was presumably due to both an intracellular and an extracellular phospholipase.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: High-resolution C is and O is gas-phase X-ray photoelectron spectra of methyl isobutyrate, methyl methacrylate, methyl acrylate, acrylic acid, acetic acid and formic acid have been investigated as model compounds for solid poly(methyl methacrylate) (PMMA). Secondary chemical shifts, variations in peak shapes and intensities for the different core lines were observed. It is shown that asymmetries and differences in line widths of the component peaks should be considered for a correct analysis of the solid polymer spectra. The observed intensities of the different C 1s and O is peaks in the gas-phase spectra do not follow stoichiometric ratios owing to different shake-off/shake-up probabilities. The gas-phase core electron binding energies have been compared with ab initio ΔSCF calculations where the relaxation of the core-hole state was included. Using a group shift argument, the relationship between the gas-phase model molecule shifts and the solid PMMA shifts have been discussed and applied to the analysis of the PMMA spectra.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The C1s core photoelectron spectra of a series of alkene molecules, ethene, propene, 1-butene, cis and trans 2-butene, 2-methyl-propene, and 1-pentene are discussed. The experimental spectra are assigned using intermediate neglect of differential overlap-configuration interaction (INDO-CI) calculations and comparative discussions. It is shown that hyperconjugation is a useful concept in the assignment of the transitions. INDO-CI is shown to give a reasonable description of the low energy part of the spectra. The results are used in the discussion of molecular models for the interpretation of the electronic structure of polyacetylene.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Previously, a geometrical model of the thermochromism in poly(3-alkylthiophene) was proposed, based upon an analysis of optical absorption spectra as well as ultraviolet and x-ray photoelectron spectra (UPS and XPS). In the present contribution, the shake-up features in the XPS C(1s) spectra of thiophene, hexyl-substituted thiophene, and bithiophene molecules in the gas phase, are compared with the shake-up features in previously published XPS C1s spectra of poly(3-hexylthiophene) and poly(3-butylthiophene). An analysis of these gas phase molecular data confirms the geometric model of electronic localization in the polymer materials proposed previously.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 90 (1989), S. 4341-4350 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The core photoionization shake-up spectra of benzaldehyde, benzene, and formaldehyde are discussed using a new computational package based on the method of intermediate neglect of differential overlap (INDO) including configurational interaction (CI). The computations include all singly excited and a large selection of the doubly excited states in the CI. The inclusion of the doubly excited states leads to a reduction of the overall intensities and to an elimination of artificial intensity in high and low shake-up peaks. A reassignment of one of the structures in the benzene spectrum has been made. In the case of benzaldehyde, where the shake-up spectrum is assigned for the first time, the calculated spectrum shows very good agreement with experiment for C1s ionization, whereas the O1s spectrum shows larger deviations due to a stronger core–valence interaction. By utilizing information from analogous calculations on the smaller molecules benzene and formaldehyde, however, it is possible to assign also the O1s spectrum in this case.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The doubly ionized states in formaldehyde, acetaldehyde, acetone, and formamide have been studied by means of x-ray excited core (C1s, N1s, O1s)–valence–valence Auger electron spectroscopy. Assignments of the spectra have been made using ab initio Hartree–Fock, Green's function, and configuration interaction (CI) calculations. A molecular orbital analysis has been carried out for the high kinetic energy part of the spectra. The breakdown of the single particle picture is found to be important over a large energy interval in the spectra. The results obtained illustrate the usefulness of Auger electron spectroscopy in characterizing the doubly ionized states even in the case of large molecular systems. The first double ionization energies for the four molecules presented have been determined to be 33.8, 30.3, 28.0, and 30 eV, respectively.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Springer
    ISSN: 1432-2064
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Summary Measure-theoretical and topological mixing properties of dynamical systems arising from substitutions are considered. It is shown that such systems are neither measure-theoretically strongly mixing, nor topologically strongly mixing of all orders. In the case of the substitution $$\eta :\begin{array}{*{20}c} {0 \to 001 } \\ {1 \to 11100} \\ \end{array} $$ it is shown that the corresponding dynamical system is measure-theoretically weakly but not strongly mixing, and topologically strongly mixing of order two but not of order three.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...