Library

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
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 100 (1993), S. 0 
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Objective To study the fibrinolytic pathways and their relationship with the contact system in women using combined oral contraceptives (COCs).Design Serial plasma samples were collected from 18 women before treatment with COCs containing 30 μg oestrogen during treatment cycles 3 and 6, and 2 weeks after stopping treatment. Fibrinolysis was measured before and after dextran sulphate mediated contact activation using fibrin plates.Results Fibrinolysis increased significantly during cycles 3 and 6 (from 77% to 100% and 113%, respectively, P〈0.01) and showed a further increase after dextran sulphate activation (from 134% to 158% and 167%, respectively, P〈0.01). Tissue-plasminogen activator, urokinase-plasminogen activator and plasminogen activator inhibitor did not change significantly. There were significant elevations of Factor XII (from 0.92 μ/ml to 1.43 u/ml, P〈0.01) and prekallikrein (0.94 u/ml to 1.10 u/ml, P〈0.05) in cycle 3, which both remained high at cycle 6 (P〈0.01) and decreased after stopping the COC. Alpha-2-macroglobulin and C1-esterase inhibitor showed no significant change, but alpha-1-antitrypsin increased from 0.85 u/ml to 1.11 u/ml by cycle 3 (P〈0.01), and returned to near normal levels after stopping the COC.Conclusions The increase in fibrinolysis may be due to increased levels of Factor XII and prekallikrein without a corresponding increase in their natural inhibitors (C1-esterase inhibitor and alpha-2-macroglobulin). A parallel increase in the intrinsic pathway of coagulation may be limited by elevated alpha-1-antitrypsin at the level of activated Factor XI. The increase in fibrinolysis caused by oral contraceptives may balance any potential thrombotic risk due to increased fibrinogen or vitamin K dependent coagulation factors.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 43 (1978), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Sunflower pectins extracted from a 1:1 mixture of heads and stalks contained 98.5% galacturonic acid of molecular weight 122,200 with ester and acetyl contents of 29.4 and 1.4%, respectively. Gel firmness and strength were evaluated over the ranges of pH 3.0–4.7,15–30 mg Ca++/g pectin, 0.75–1.25% pectin and 10–50% sucrose in the gel formulation. Conditions of pH 4.3, 22.5 mg Ca++/g pectin, 1% pectin and 30% sucrose were optimal for gel firmness and strength. The sunflower pectin gel was particularly sensitive to pH and calcium concentration which had marked influences on pectin solubility, pregelation, brittleness and granularity. A high proportion of free carboxyl groups (69.1%), and possibly nonrandom distribution of demethoxylated groups on the pectin molecules, appeared responsible for the high sensitivity of sunflower pectins to ionic conditions in the gel formulation.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 471-475 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The Fourier components of the ferromagnetic hysteresis of polycrystalline gadolinium and terbium have been measured in low ac magnetic fields (0.1–15 A m−1) using synchronous detection. The field dependences and magnitudes of the various harmonics cannot be described by the Rayleigh hysteresis law. It is shown that the dominant term in the absorptive component of the first harmonic is associated with a magnetic aftereffect. At the lowest fields (H(approximately-less-than)1 A m−1) there are indications that magnetic hysteresis vanishes.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 10 (1977), S. 18-20 
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: The cooling of single-crystal samples to helium temperatures within a four-circle neutron diffractometer has been achieved by a novel continuous-flow system. The system relies solely on helium for its cooling power with two flow circuits being used. The first delivers liquid to a reservoir cryostat of capacity 1–4 l located close to the Eulerian cradle of the diffractometer and the second draws the refrigerant from this cryostat via a flexible transfer tube into the sample region of a compact cooling unit mounted off the cradle. This arrangement allows unhindered motion of the diffractometer circles for sample temperature operation in the range 3.9–300 K. The system requires a total helium flow of 1.0 l h−1 to maintain a temperature of 20±0.1 K, decreasing to 0.5 l h−1 at higher temperatures.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Springer
    General relativity and gravitation 8 (1977), S. 987-1001 
    ISSN: 1572-9532
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The curvature tensor of space-time can be described most concisely by giving the components of the Weyl and Ricci tensors relative to a complex null tetrad. The Newman-Penrose equations provide a simple and direct algorithm for calculating these components. This paper describes a computer program, written in the symbolic manipulation language CAMAL, which performs this calculation. Comparisons are made with the classical tensorial method of calculation, and some applications are discussed.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 17 (1998), S. 1791-1793 
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 23 (1988), S. 3480-3484 
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Interest is focused on the segregation and clustering behaviour of iron atoms in fcc Cu100−x−yAuxFey, alloys (x=6 to 50.7 at%, y=0.2 to 1.0 at%) of three different metallurgical states: as-rolled, fast-quenched and melt-spun. The gold concentration was varied to assess the effect of change in lattice parameter. Mössbauer spectroscopy has been used to examine iron clusters and phases in samples as functions of annealing temperature and time. The development of f c c γ-Fe, segregates with increasing annealing time at temperatures around 410° C has been monitored and the Néel temperature of the antiferromagnetic γ-Fe precipitates as well as their particle size determined, the latter by transmission electron microscopy. The increase in isomer shift with increasing gold concentration is accounted for mainly by changes in atomic volume.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Hyperfine interactions 28 (1986), S. 993-996 
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A series ofCuFe alloys containing 5, 10 and 16 at% Fe has been prepared using standard ribbon spinning techniques. It is found that samples containing significant fractions (∼ 5%) of Fe in the form of r-Fe can be obtained readily on quenching from the (r + liquid) phase, applied field spectra (0–5.2 T) on antiferromagnetic r-Fe at 4. 2 K indicate that the anisotropy energy is small and that spins tilt from the minimum energy configuration (spin axes perpendicular to Bappl) for Bappl ≥ 2.5T.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Hyperfine interactions 28 (1986), S. 989-991 
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Zero field Mössbauer spectra (4.2–40 K) have been obtained onAuFe alloys containing 5 and 10 at %Fe in differing metallurgical states. Graphs of the reduced magnetic hyperfine field versus reduced temperature have been compared With Brillouin curves. This comparison shows that the heat treated 5 at %Fe sample is essentially a homogeneous spin glass whereas the behaviour of the heat treated 10 at %Fe sample and alloys in an as rolled (atomically clustered) state can be better described by the additional presence of magnetic clusters of spins.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Hyperfine interactions 28 (1986), S. 997-1000 
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The intermetallic compound Zr2Ni has been found to take up hydrogen on charging at room temperature. Zr2(NiFe) H4.7 and Zr2(NiFe) H4.5 show the same structure (CuAl2 type) as the uncharged compound but with an expanded lattice. Analysis of room temperature spectra in zero and applied fields indicates that the57Fe atoms occupy Ni sites in Zr2(Ni 57Fe). Volume expansion effects account for about one third of the increase in isomer shift (∼ +0.58 mms−1) observed on hydrogenation. The distribution of hydrogen atoms around the probe37Fe atoms also causes a decrease of ∼0.23 mms−1 in the mean value for the quadrupole splitting compared Rith uncharged Zr2Ni.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...