Library

X
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
    Synthesis and structure-activity relations of disodium cromoglycate and some related compounds (1972)
    s.l. : American Chemical Society
    Journal of medicinal chemistry 15 (1972), S. 583-589 
    Details
    ISSN: 1520-4804
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jm00276a003
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Optically tuned, all-semiconductor optical interference filter (1987)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 51 (1987), S. 1310-1312 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Optical tuning of an epitaxial, all-semiconductor optical interference filter is reported. The filter is a high reflector composed of alternating, strained layers of GaP (360 A(ring)) and GaAs0.2P0.8 (360 A(ring)) grown by metalorganic chemical vapor deposition. With low optical power, these reflectors exhibit reflectances up to 90% at 510 nm over a 10-nm bandwidth. With absorbed optical pulses of energy density 3 mJ/cm2, this high-reflectance zone can be blue shifted by 20 A(ring). As a result, very large changes in reflectance can be produced. The effect is interpreted as a plasma-induced refractive index depression in a semiconductor superlattice. Furthermore, the layer strain enhances the optically induced index change of the high reflector compared to that in bulk materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.98712
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Visual Control of Hand-reaching Movement: Activity in Parietal Area 7m (1997)
    Oxford, UK : Blackwell Publishing Ltd
    European journal of neuroscience 9 (1997), S. 0 
    Details
    ISSN: 1460-9568
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The activity of single neurons was studied in parietal area 7m while monkeys performed an instructed-delay reaching task to visual targets under normal light conditions and in darkness. The task was aimed at assessing the influence of vision of hand position on the neural activity of 7m related either to static posture and movement of the hand or to eye position in the orbit. The results show the existence of preparatory, movement-related and postural activity for the control of reaching, all of which are strongly modulated by vision. The activity of many 7m neurons, otherwise insensitive to pure visual stimuli, seems to reflect complex interactions between gaze angle and hand position in the visual field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1460-9568.1997.tb01460.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Helium gas-bubble superlattice in copper and nickel (1979)
    [s.l.] : Nature Publishing Group
    Nature 281 (1979), S. 359-360 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] An annealed copper target was irradiated in bulk at 300 K with 30-keV helium ions at normal incidence and an electron-transparent specimen containing the bubble layer was prepared. The bubbles lay predominantly on a superlattice having an f .c.c. structure aligned with the copper matrix (see Figs ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/281359a0
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Helium gas bubble lattices in face-centred-cubic metals (1978)
    [s.l.] : Nature Publishing Group
    Nature 276 (1978), S. 595-596 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Annealed polycrystalline targets electropolished to a high surface finish were irradiated at room temperature to a level of approximately 4 1017 He ions cm-2 with the ion beam normal to the surface. The main study was of copper, for which the mean projected range and r.m.s. spread in projected ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/276595a0
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Importance of stress in bubble ordering in the helium gas-bubble superlattice in copper (1987)
    [s.l.] : Nature Publishing Group
    Nature 329 (1987), S. 316-318 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] It has become widely accepted that an important characteristic of cavity lattices is that the superlattice forms in the m orientation. For example, in the most recent paper on the theory of bubble ordering6 it is asserted that the most striking feature of the bubble lattice is that it "always has ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/329316a0
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Large bubble-like features ordered on a macrolattice in helium-implanted gold (1990)
    [s.l.] : Nature Publishing Group
    Nature 347 (1990), S. 265-267 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] To produce a bubble superlattice the helium is implanted in the metal at a temperature 〈 0.3 Tm, where Tm is the melting temperature of the metal. For implantation at these low tem-peratures the bubbles are overpressured15'17, in the sense that the surface tension of the metal alone is not ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/347265a0
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Cortical networks for visual reaching (1993)
    Springer
    Experimental brain research 97 (1993), S. 361-365 
    Details
    ISSN: 1432-1106
    Keywords: Visuomotor integration ; Parietal and frontal lobes ; Corticocortical connectivity ; Arm movements ; Monkey
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The cortical anatomical substrates by which visual information may influence the frontal areas controlling reaching movements to visual targets were studied in monkeys. A reaching task was employed to characterize the arm-related regions of the frontal lobe. Injections of retrograde tracers into these physiologically defined cortical fields revealed a gradient of parallel corticocortical pathways originating in the superior parietal lobule and impinging upon different frontal regions. These results support the hypothesis that the superior parietal lobule can supply the frontal motor and premotor areas not only with the proprioceptive information but also with the visual input required for the control of reaching.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00228707
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Shift of preferred directions of premotor cortical cells with arm movements performed across the workspace (1990)
    Springer
    Experimental brain research 83 (1990), S. 228-232 
    Details
    ISSN: 1432-1106
    Keywords: Premotor cortex ; Arm movement ; Movement direction ; Coordinate system ; Monkey
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The activity of 156 neurons was recorded in the premotor cortex (Weinrich and Wise 1982) and in an adjoining rostral region of area 6 (area 6 DR; Barbas and Pandya 1987) while monkeys made visually-guided arm movements of similar direction within different parts of space. The activity of individual neurons varied most for a given preferred direction of movement within each part of space. These neurons (152/156, 97.4%) were labeled as directional. The spatial orientation of their preferred directions shifted in space to “follow” the rotation of the shoulder joint necessary to bring the arm into the different parts of the work-space. These results suggest that the cortical areas studied represent arm movement direction within a coordinate system rotating with the arm and where signals about the movement direction relate to the motor plan through a simple invariant relationship, that between cell preferred direction and arm orientation in space.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00232214
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Nice separation axioms (1994)
    Springer
    Applied categorical structures 2 (1994), S. 205-218 
    Details
    ISSN: 1572-9095
    Keywords: Primary 54D15 ; Secondary 18C15 ; 54D20 ; locale ; Galois connection ; Isbell object
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract The epi-reflective hull B of an objectB in the category of locales is called anice separation axiom provided it enjoys certain properties which are natural generalizations of properties satisfied by the categories of completely regular locales and zero dimensional locales. Invariably, a family ofStone-like duality theorems ensues, distinguishing (for each large enough regular cardinal κ) the full subcategory of all κ-LindelöfB-objects. Some corollaries for topological spaces arise, as well as some open problems, upon “taking of spatial parts”.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00873300
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...