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  • 1
    Electronic Resource
    Electronic Resource
    Magnetization and susceptibility of coupled ferromagnetic trilayers calculated with a Green's function type theory (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 6692-6694 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The effect of the interlayer exchange interaction Jinter in coupled Co/Cu/Ni trilayers is studied theoretically, as motivated by recent experiments. In these systems, Jinter induces a considerable Ni magnetization for temperatures above the Curie temperature TC,Ni of the Ni film. We will show that this strong effect can only be understood if magnetic fluctuations in these 2D-like systems are taken into account. A mean field estimate, neglecting these fluctuations, yields a ten times smaller increase of the Ni magnetization. The induced magnetization increases for both a ferromagnetic (Jinter〉0) and an antiferromagnetic (Jinter〈0) interlayer coupling. The Ni susceptibility, exhibiting a resonance-like peak at T(approximately-greater-than)TC,Ni, looks different for these two cases. The calculations are performed with the help of a Heisenberg Hamiltonian and a Green's function approach. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.372810
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  • 2
    Electronic Resource
    Electronic Resource
    Magnetic recording medium with improved temporal stability (2001)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 78 (2001), S. 2190-2192 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The current effort to fabricate nonvolatile magnetic recording media with a high areal density is deteriorated by the increasing temporal instability of the stored information. If the stored energy per magnetic particle competes with the thermal energy, spontaneous magnetic reversal processes may occur. Deposition of the magnetic particles on top of an antiferromagnetic substrate will increase its energy barrier due to the exchange coupling between the two subsystems. For this, the magnetic moments of the antiferromagnet in the vicinity of the magnetic particle have to deviate from their undisturbed arrangement. This disturbance vanishes within a few lattice constants. In the framework of a classical spin model, we calculate the spin arrangements and the resulting energy barriers for typical systems. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1362282
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  • 3
    Electronic Resource
    Electronic Resource
    Proprioceptive sensitivity and performance in anterior cruciate ligament-deficient knee joints (2000)
    Copenhagen : Munksgaard International Publishers
    Scandinavian journal of medicine & science in sports 10 (2000), S. 0 
    Details
    ISSN: 1600-0838
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Sports Science
    Notes: We studied the performance and proprioception of the knee joint in a group of non-reconstructed anterior cruciate ligament (ACL)-deficient (n=20) patients and compared them with a group of ACL-reconstructed patients (n=18) and a group of healthy controls (n=20). Each patient was scored according to Lysholm and Tegner and was then asked to subjectively evaluate the performance of the injured knee and the degree of retropatellar discomfort. The knee joint laxity was measured. The performance was assessed based on the performance in a triple jump test and a one-leg one-step leap test. The proprioception in the knee was measured as the threshold when passive movement was detected and as the ability to reproduce a flexion angle from a start position of 60° of flexion or from full extension of the knee. All tests were performed on both legs. The scoring systems and the subjective evaluation showed significant differences between the reconstructed and the non-reconstructed patients. No significant difference in knee joint laxity was found between the two groups. In the triple jump test and the one-step leap test, both groups performed significantly worse on the leg with the injured knee joint than on the non-injured leg. The proprioceptive tests showed decreased ability to recognize and reproduce a prior angle from a start position of 60°. The threshold to detection of passive movement with the injured knee was significantly increased in both groups of patients. No difference was found between the dominant and non-dominant knee in the control group. When reproduction of the same angles started from full extension, the groups did not differ. These data show that decreased performance and changes in the proprioception of the knee joint accompany ACL rupture.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1034/j.1600-0838.2000.010002085.x
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  • 4
    Electronic Resource
    Electronic Resource
    Deposition of spray liquid on the soil below cereal crops after applications during the growing season (2003)
    Oxford, UK : Blackwell Science Ltd
    Weed research 43 (2003), S. 0 
    Details
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The aim of this study was to investigate how big a proportion of the spray liquid applied in a typical application was deposited on the soil surface below the crop. From an agronomical point of view this part of the spray is an undesirable loss of foliar acting pesticides during application and it also constitutes a primary source of leaching and surface run-off. The investigation was carried out during 1998–2001 in winter wheat and in spring barley. Applications were carried out at approximate intervals of 10 days during the whole growing season in the two cereal crops. The results showed that a high proportion of the spray liquid reaches the soil below the crop during applications at early growth stages corresponding to the growth stages where weed control on farms is carried out. At later growth stages soil deposition declined and reached values below 5% of the applied dose in winter wheat after inflorescence emergence (50–59 BBCH). The spring barley crops remained more open and minimum soil deposit values were approximately 15% of the applied dose at growth stages (50–59 BBCH). During ripening soil deposition values increased again as crop cover decreased.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3180.2003.00354.x
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  • 5
    Electronic Resource
    Electronic Resource
    Effects of reduced time on pasture caused by prolonged walking on behaviour and production of Mpwapwa Zebu cattle (2002)
    Oxford, UK : Blackwell Science Ltd
    Grass and forage science 57 (2002), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: In many African countries, cattle are often allowed to graze only during the daytime and the daily walk to pasture limits time for foraging. Two groups of cattle were allowed access to pasture for 9 h or 5 h associated with a daily walk of 0·5 h or 4·5 h respectively. Each treatment period lasted for 14 days in a cross-over design. Observations of behaviour were carried out for 8 days in each treatment period. When only 5 h were allowed at pasture, the animals grazed less (0·61 vs. 0·66 of time) compared with the first 5 h of the 9 h treatment. The average daily milk yield was 323 g (0·078) higher when 9 h were allowed on pasture (P 〈 0·05 during the second week of treatments). There were no differences in milk yield after the end of the treatments. The daily liveweight gain was 250 g higher when the animals were on pasture for 9 h. These differences could be due to the limited time on pasture or to energy requirements for the walk to pasture. It is concluded that increasing the walking time and reducing time on pasture may compromise animal welfare and performance under the experimental conditions, i.e. on poor quality pastures in a warm humid climate where the main period at pasture is in the middle of the day.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2494.2002.00307.x
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  • 6
    Electronic Resource
    Electronic Resource
    Electroencephalogram recordings from the olfactory bulb of juvenile (0 year) Atlantic cod in response to amino acids (2004)
    Oxford, UK; Malden, USA : Blackwell Science Ltd
    Journal of fish biology 65 (2004), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Olfactory sensitivity of juvenile (0 year) Atlantic cod Gadus morhua to 20 L-amino acids was studied by recording electroencephalograms (EEG) from the olfactory bulb. Leucine, methionine, asparagine, glutamine, alanine and threonine were highly stimulatory; proline, phenylalanine, aspartic acid and tryptophan were the least stimulatory. Threshold concentrations determined for four amino acids were 10−8 M for alanine, 10−7 M for arginine and leucine and 10−6 M for glutamic acid.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.0022-1112.2004.00574.x
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  • 7
    Electronic Resource
    Electronic Resource
    Identifying responders to acid suppression in dyspepsia using a random starting day trial (2000)
    Oxford UK : Blackwell Science Ltd
    Alimentary pharmacology & therapeutics 14 (2000), S. 0 
    Details
    ISSN: 1365-2036
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Functional dyspepsia is a heterogeneous condition and a uniform response to drug treatment is not likely. This may be the reason for the general failure of acid suppression in clinical trials in these patients. It may be more rewarding to identify true responders to drug treatment by a single subject trial.〈section xml:id="abs1-2"〉〈title type="main"〉Aim:To develop and to test a novel single subject trial design (random starting day trial) in dyspeptic patients.〈section xml:id="abs1-3"〉〈title type="main"〉Patients and methods:A total of 301 dyspeptic patients entered a 16-day trial. All patients received placebo for the first 4 days and switched to omeprazole at a randomized and blinded day between day 5 and day 14. Response was defined as a sustained ≥ 50% decrease in symptom score occurring in relation to drug shifting.〈section xml:id="abs1-4"〉〈title type="main"〉Results:Spontaneous response varied between 0.3% and 10.6% per day, uniformly distributed over time. Overall, 53–61% of patients with organic dyspepsia had a symptom response in relation to shifting to active treatment, compared to only 23% of patients with functional dyspepsia. The only predictor of response was symptoms suggesting gastro-oesophageal reflux.〈section xml:id="abs1-5"〉〈title type="main"〉Conclusions:A random starting day trial may be a valuable tool to identify response to acid suppression in dyspeptic patients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2036.2000.00866.x
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  • 8
    Electronic Resource
    Electronic Resource
    A dose escalating study of topotecan preceding cisplatin in previously untreated patients with small-cell lung cancer (2000)
    Springer
    Annals of oncology 11 (2000), S. 829-835 
    Details
    ISSN: 1569-8041
    Keywords: cisplatin ; combination chemotherapy ; phase I ; phase II ; small-cell lung cancer ; topotecan
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background:The aim was to define the MTD of topotecan (TPT) givenbefore cisplatin in patients with previously untreated SCLC. Patients and methods:Alternating cycles A and B to a total of 6cycles were given. Cycle A: TPT days 1–5 and cisplatin (50mg/m2) day 5. Cycle B consisted of teniposide, carboplatin,vincristine, and cisplatin. TPT was escalated at doses 0.75, 1.0, 1.25, and1.5 mg/m2. DLT was defined for the first cycle as grade 4neutropenia with fever or when lasting 〉7 days, or grade 4thrombocytopenia. Results:Fifteen patients with limited disease and six patientswith extensive disease were included. No episodes of DLT were recorded in thefirst cycles A and consequently 1.5 mg/m2 was defined as MTD. At1.5 mg/m2 (11 patients, 30 cycles), four and three episodes ofgrade 4 thrombocytopenia and neutropenia lasting more than seven days occurredin subsequent cycles A. Thrombocytopenia and anaemia were cumulative as morecycles were administrated. Non-hematological toxicity was mild. The responserate was 86% (95% confidence interval (95% CI):64%–97%) with 33% (95% CI:15%–57%) achieving CR. Conclusions:1.5 mg/m2 TPT can be delivered safely with50 mg/m2 cisplatin on day 5 in patients with previously untreatedSCLC.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008393512479
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  • 9
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    Oxepinamides A-C and fumiquinazolines H-I: bioactive metabolites from a marine isolate of a fungus of the genus Acremonium (2000)
    In:  EPIC3Chemistry - A European Journal, 6, pp. 1355-1360
    Details
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , peerRev
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    PAPER (OA)
  • 10
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    Isolation of planctomycetes from Aplysina sponges (2003)
    Inter Research
    In:  Aquatic Microbial Ecology, 33 . pp. 239-245.
    Details
    Publication Date: 2015-08-27
    Description: There is mounting molecular evidence that bacteria belonging to the phylum Planctomycetes are abundant in marine sponges including members of the genus Aplysina. In an attempt to culture planctomycete bacteria from Aplysina sponges, 116 bacterial strains were isolated on selective oligotrophic media. Screening of the strain collection by fluorescence in situ hybridization with the planctomycete-specific probe Pla46 yielded 3 positive candidates. Nearly complete sequencing of the respective 16S rRNA genes revealed that the isolates were affiliated with 2 distinct clusters of the genus Pirellula: 1 isolate was obtained from a Mediterranean sponge, 1 from a Caribbean sponge and a third from Caribbean seawater. To our knowledge this is the first report of cultured Planctomycetes from marine sponges. The isolates grew slowly on oligotrophic media and failed to grow on nutrient-rich media. Pirellula sp. Strain 797 was pink-pigmented while the other 2 isolates, 16 and 81, were non-pigmented. Transmission electron microscopy revealed a pear- or droplet-shaped cell morphology that is characteristic of the genus Pirellula. The application of strain-specific oligonucleotide probes to sponge tissue cryosections showed that the isolates contribute only a minor fraction to the total microbial community that is associated with Aplysina spp. sponges
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.3354/ame033239
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    OceanRep: Article in a Scientific Journal - peer-reviewed
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