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
    Integrated micromachined magnetic field sensor with on-chip support circuitry (1994)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 64 (1994), S. 1576-1578 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: This letter presents an integrated magnetic field sensor that has been fabricated in a standard complementary metal-oxide semiconductor process. Along with the sensor, on-chip circuitry has been realized to amplify the resulting Hall voltage signal. Furthermore, to increase device sensitivity, the sensor has been subjected to a post-process etching step. The integrated sensor exhibits a ten times higher output signal compared with the output signal of the sensor alone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.111844
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Micromachined vertical hall magnetic field sensor in standard complementary metal oxide semiconductor technology (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 60 (1992), S. 3188-3190 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A novel vertical Hall magnetic field sensor which incorporates two important microsensor features is presented. First, the device is fabricated using a standard complementary metal oxide semiconductor (or CMOS) process and therefore possesses all characteristics inherent with integrated circuit manufacturing. Second, the magnetic field sensor is subjected to a post-processing step which involves CMOS-compatible micromachining techniques. This combination of micromachining and CMOS processing led to the superior results for a micromachined sensor when compared with a non-micromachined magnetic field sensor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.106738
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    A 3-D vertical hall magnetic-field sensor in CMOS technology
    Amsterdam : Elsevier
    Sensors and Actuators A: Physical 34 (1992), S. 9-14 
    Details
    ISSN: 0924-4247
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Electrical Engineering, Measurement and Control Technology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0924-4247(92)80133-N
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    3-D Magnetic field sensor realized as a lateral magnetotransistor in cmos technology
    Amsterdam : Elsevier
    Sensors and Actuators A: Physical 22 (1989), S. 770-775 
    Details
    ISSN: 0924-4247
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Electrical Engineering, Measurement and Control Technology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0924-4247(89)80075-5
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Separation of Bulk Carbon Dioxide-Hydrogen Mixtures by Selective Surface Flow Membrane (1998)
    Springer
    Adsorption 4 (1998), S. 355-360 
    Details
    ISSN: 1572-8757
    Keywords: selective surface flow ; nanoporous carbon membrane ; gas separation ; carbon dioxide ; hydrogen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract The separation performance of carbon dioxide-hydrogen mixtures by a nanoporous carbon membrane called selective surface flow membrane is described. The membrane selectively permeates CO2 from H2 and a H2 enriched gas is produced at the feed gas pressure. Extensive experimental data for the separation using feed gas pressures from 0.24 to 1.13 MPa and CO2 compositions from 5 to 75 (mol%) in H2 are reported. The data can be empirically correlated using a simple equation with a single adjustable-parameter. The adjustable parameter is found to be a linear function of the feed gas CO2 partial pressure. The membrane separates CO2-H2 mixture very efficiently even at a low total feed gas pressure (∼0.4 MPa). The membrane area required for a given separation decreases drastically with increasing feed gas pressure in the range of 0.24–0.92 MPa and then it becomes insensitive to the feed gas pressure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008802320863
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Total unsaturated compounds and polycyclic aromatic hydrocarbons in molluscs collected from waters around Newfoundland (1993)
    Springer
    Archives of environmental contamination and toxicology 24 (1993), S. 249-257 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract Baseline concentrations of total unsaturated compounds extracted from six species of molluscs, collected from waters around Newfoundland and Labrador were determined by ultraviolet/fluorescence spectroscopy (uv/f, chrysene equivalents, IOC recommendation). Extracts of muscle tissue from scallops,Placopecten magellanicus, clams,Mya arenaria, whelks,Buccinum undatum and propeller clams,Cyrtoderia siliqua had negligible hydrocarbon concentrations compared to the corresponding visceral mass. The pattern of concentration (GC-MS) of the 16 PAH priority pollutants (EPA recommendation) was similar in the visceral mass of these species and in whole mussels (Mytilus edulis) and periwinkles (Nucella lapillus). When the 16 PAH were detected (〉5 ng/g, dry weight), fluoranthene dominated (〈200 ng/g), followed by phenanthrene-anthracene (〈50 ng/g). Extracts of the visceral mass of scallops appeared to contain a relatively larger amount of uv/f absorbing hydrocarbons; therefore, a further investigation was undertaken. A C-25 unsaturated hydrocarbon of molecular weight 346 was identified as the major component of the extraction mixture. Overall, hydrocarbon levels were very low in comparison to other geographical regions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01141355
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Microzooplankton herbivory on the Grand Bank (Newfoundland, Canada): A seasonal study (1990)
    Springer
    Marine biology 107 (1990), S. 321-328 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Grazing impact of microzooplankton on phytoplankton was investigated on the Grand Bank, Newfoundland, Canada, in April, July and October 1984, using a seawater dilution method. In April a large proportion of chlorophylla was in the microplankton size fraction (〉 20µm) while in mid-summer and fall most was in the nanoplankton size fraction (〈 20µm). Diatoms were the dominant phytoplankters in April, while undetermined flagellates and coccolithophores were abundant in other seasons. Major grazers were oligotrichous ciliates in all seasons. Instantaneous grazing rates on nanophytoplankton, as measured by changes in chlorophylla, varied from 0.12 to 0.43 d−1 and those on microphytoplankton from 0.19 to 0.68 d−1. Grazing rates did not change over 24 and 48 h intervals. This level of grazing corresponded to a daily loss of about 20 and 30% of standing stock of chlorophylla and about 50 and 70% loss of potential production in the two size fractions respectively. Taxon-specific grazing rates, calculated from microscopic enumeration, showed that small diatoms were grazed heavily, and their growth was controlled by grazing in late spring. In late summer and fall, undetermined flagellates and coccolithophores were also grazed at high rates but their growth rates were higher than the grazing rates, and therefore, were not controlled by microzooplankton. In general, microzooplankton grazed on whatever appropriate sized food was dominant in the experimental water. Their potential ability to control the growth of certain food species may be one of the causes determining the species composition of phytoplankton communities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01319832
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    On the quantization of identical particles (1994)
    Springer
    Theoretical and mathematical physics 98 (1994), S. 55-60 
    Details
    ISSN: 1573-9333
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract We consider the quantization of identical particles. We suggest an a priori argument for identification of the classical configuration space. In two spatial dimensions, for two particles, this yields the (by now) familiar cone with deficit angle of π, with the vertex removed. We find two fundamental parameters which characterize the quantum theory. The first, θ, is associated to the multiple connectedness of the cone, while the other, α, is associated to the question of unitarity. θ describes the statistics of the particles and gives rise to anyons. α specifies the boundary conditions to be imposed on the wave functions at the vertex of the cone. We show by explicit example that α can be regarded as a vestige of short distance interactions between the particles, leaving θ as the truly, obligatory, appurtenance of the quantum mechanics of identical particles is two spatial dimensions. We also analyze the symmetries of the quantum Hamiltonian and find a dynamical SO(2, 1) symmetry, acting on the space of Hilbert spaces with different boundary conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01015124
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Comments on the use of a deep tank in planktological research (1977)
    Springer
    Helgoland marine research 30 (1977), S. 105-117 
    Details
    ISSN: 1438-3888
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The Dalhousie University Aquatron tower tank (10 m deep, 3.66 m in diameter, with viewing ports at regular intervals down its side) can be operated in a continuous flow mode or as a closed system and has programmable illumination providing up to 10% of maximum summer illumination at the surface. Such systems have several drawbacks. Perhaps most serious is the lack of an adequate control. In the continuous flow mode the system is subject to the same type of sampling error encountered in the use of any other sampling device in a patchy environment. Temperature regulation and mixing were a problem with the tank in the static mode. As a result considerable stratification of properties occurred. Irradiance seemed to have too much directionality for normal diel migration patterns to develop in the zooplanktonic community. On the other hand, the system would seem very useful for short-term studies of behaviour and community interaction. For example, the pteropodSpiratella retroversa has been observed to regulate its buoyancy almost instantly. Typically animals remain motionless or slowly sinking (5–20 cm min−1) for 1 to 5 minutes, swim up for 10 to 60s, and then return to “resting” and feeding. Mixed zooplankton populations, including such notoriously delicate animals asSagitta elegans, can also be maintained and behaviour studied. Despite a variable temperature regime, the structure of the zooplankton community remained intact for more than three months.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02207829
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Causal Structure of Vacuum Solutions to Conformal(Weyl) Gravity (1999)
    Springer
    General relativity and gravitation 31 (1999), S. 1031-1047 
    Details
    ISSN: 1572-9532
    Keywords: CONFORMAL GRAVITY ; PENROSE DIAGRAMS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using Penrose diagrams the causal structure ofthe static spherically symmetric vacuum solution toconformal (Weyl) gravity is investigated. A strikingaspect of the solution is an unexpected physicalsingularity at r = 0 caused by a linear term in the metric.We explain how to calculate the deflection of light incoordinates where the metric is manifestly conformal toflat i.e. in coordinates where light movesin straight lines.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1026749032217
    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...