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  • 1
    Book
    Book
    Singapore [u.a.] : World Scientific
    Keywords: Dünne Schicht ; Doppelbrechung ; Refraction, Double ; Thin films Optical properties ; Dünne Schicht ; Doppelbrechung
    Type of Medium: Book
    Pages: XXIX, 379 S. , Ill., graph. Darst.
    ISBN: 9810229062
    DDC: 530.4/275
    RVK:
    Language: English
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  • 2
    Electronic Resource
    Electronic Resource
    Bradford : Emerald
    Reference services review 31 (2003), S. 141-153 
    ISSN: 0090-7324
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Information Science and Librarianship
    Notes: Discusses the application of win-win mindsets and strategy in the employment of reference graduate assistants in academic libraries. The strategy covers different stages of the employment including recruitment, training and support, and transition. It focuses on the concept of treating graduate assistants as colleagues and involving them in the whole process. Also compares the differences between the employment of reference graduate assistants who are library school students and those who are non-library school students, and the differences between graduate assistants in libraries and contingency workers in the business world.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Immunological reviews 161 (1998), S. 0 
    ISSN: 1600-065X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary: The murine B-lymphocyte differentiation antigen BP-1 /6C3, a homodimeric integral membrane protein composed of M, 140,000 sub-units, has been identified as glutamyl aminopeptidase (EAR EC 3,4. 11.7). This ecto-enzyme cleaves acidic amino acid residues from the amino terminal of polypeptide substrates such as angiotensin II and cholecystoki-nin-8. Although BP-1/6C3/EAP is expressed by cells in many tissues, among hematopoietic cell lineages this ecto-enzyme is restricted to immature B-lineage cells where its expression is upregulated by interleukin-7 and viral transformation, BP-1/6C3/EAP thus serves as a valuable marker of progression along the B-cell differentiation pathway, but a corresponding biological role has not yet been established.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 532-533 (Dec. 2006), p. 289-292 
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Ceramic coating materials own some advantages, for example high-rigidity, goodabradability and good performance under high temperature. At the same time, ceramic coatingmaterials are also difficult-to-machine materials. High machining precision and efficiency can beobtained in grinding WC-Co coating by cup wheel. The affection of grinding temperature is veryimportant for grinding processing. But there is no research on grinding temperature of WC-Cocoating by cup wheel. So in this paper, grinding temperature by cup wheel is researched on theory,the new concept, which is effectiveness width of arc moving heat source, is presented, andtheoretical formula of grinding temperature is also built. Then experimental research on grindingtemperature of WC-Co coating by cup wheel is done by use of thermocouple temperaturemeasurement technology. The experimental results show the validity and effectivity of thetheoretical formula. The affection of grinding parameters to grinding temperature is researched also
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 532-533 (Dec. 2006), p. 885-888 
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In traditional NC curve grinding, the grinding wheel’s rotary surface is generally not on thegrinding point’s normal direction, which will bring the distortion of grinding wheel and decrease themachining precision. This paper presents a new technology, which is called the non-interferencenormal tracking for NC curve grinding process. By controlling the worktable to rotate in the x-y plane,the superposition between the rotary surface of the grinding wheel and the normal vector of theworkpiece’s contour is realized, and the interference between the wheel’s body and the workpiececould be avoided at the same time. A mathematic model is established and an algorithm to calculatethe worktable’s rotary angle is proposed. Finally, the algorithm is applied in a new-type digital curvegrinder successfully. The results show that the method is reliable and effective
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Molecular and cellular biochemistry 189 (1998), S. 9-17 
    ISSN: 1573-4919
    Keywords: sarcoplasmic reticulum ; calcium uptake ; ryanodine ; thapsigargin ; cyclopiazonic acid ; heart
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract Thapsigargin is a natural product that specifically inhibits all known SERCA calcium pumps with high affinity. We investigated the effects of thapsigargin on cardiac sarcoplasmic reticulum (SR) by measuring the oxalate-supported calcium uptake rate in the unfractionated homogenate and in the isolated SR fraction. The uptake rate in both the isolated SR and unfractionated homogenate are stimulated about two-fold by preincubation with high concentrations of ryanodine, which closes the SR efflux channel. Thapsigargin stoichiometrically and completely inhibited the calcium uptake rate in the isolated SR, both in the presence and absence of SR channel blockade. In contrast, thapsigargin nearly completely inhibited the homogenate calcium uptake only in the absence of SR channel blockade; in the presence of blockade, about 20% of the uptake activity was insensitive to thapsigargin. This result unmasks a thapsigargin-insensitive, ryanodine-sensitive component of calcium uptake in the heart. This activity is in an oxalate-permeable pool and is inhibited by cyclopiazonic acid, another inhibitor of the SERCA calcium pumps. There was no TG-insensitive activity in the rat EDL muscle homogenate. The absence of thapsigargin-insensitive uptake activity in the isolated SR can be attributed to its inactivation during the isolation of the SR. The oxalate permeability and ryanodine sensitivity suggest that the TG-insensitive calcium uptake activity is closely related to the classical SR. The different thapsigargin sensitivities suggests the existence of two kinds of intracellular calcium pumps in the heart.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    ISSN: 0748-8025
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: The generalized cell mapping method used in solving non-linear dynamical systems is also a powerful means of determining the state volume in which strange attractors reside. Several methods of refining the size of cells are proposed in this paper. With the aid of these methods it is possible to describe the shape of a strange attractor in however much detail is required. Any part of the cell state space can be enlarged by the suggested zoom technique when the finte structure of this strange attractor is going to be studied. By using the limiting probability distribution calculated from the persistent group, the statistical meaning of the attractor is revealed. Results of examples which were computed on an IBM PC computer show the validity and efficiency of the methods.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Entomology 51 (2006), S. 1-24 
    ISSN: 0066-4170
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Notes: Insulin-like peptides (ILPs) exist in insects and are encoded by multigene families that are expressed in the brain and other tissues. Upon secretion, these peptides likely serve as hormones, neurotransmitters, and growth factors, but to date, few direct functions have been demonstrated. In Drosophila melanogaster, molecular genetic studies have revealed elements of a conserved insulin signaling pathway, and as in other animal models, it appears to play a key role in metabolism, growth, reproduction, and aging. This review offers (a) an integrated summary of the efforts to characterize the distribution of ILPs in insects and to define this pathway and its functions in Drosophila and (b) a few considerations for future studies of ILP endocrinology in insects.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 74 (1999), S. 1794-1796 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We discuss the design and fabrication of an all-dielectric thin-film polarizer that is compatible with existing planar technologies. This polarizer consists of a stack of quarter-wave biaxial layers. Each quarter-wave layer is formed by reactive electron-beam evaporation, using a bideposition technique that causes a columnar structure to grow perpendicular to the substrate, produces large normal-incidence linear birefringence, and avoids thickness wedging that is inherent in tilted-columnar biaxial layers. p-polarized light that is incident on the polarizer encounters an index-matched stack and is transmitted, whereas s-polarized light is rejected by a coexisting high-reflectance stack. A fabrication figure-of-merit of ten film periods per decade in the extinction ratio has been achieved in practice for a titanium oxide/tantalum oxide polarizer. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 24-25 (Sept. 2007), p. 283-288 
    ISSN: 1662-8985
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This paper presented a new technology, which was the online wheel wear evaluation ingrinding WC-Co ceramic coating by using wavelet packet decomposition. On the basis of themeasurement methods, theory of online wear evaluation of wheel was introduced. And the selectionprinciple of characteristic signals was brought forward, the grinding acceleration signal was the bestchoice among many characteristic signals. The time domain signal analysis method of wavelet packetdecomposition was analyzed. Lastly, experiments on the wear of wheel were performed, and theexperimental results showed the validity of the method
    Type of Medium: Electronic Resource
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