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  • 1
    Publication Date: 2024-03-13
    Description: The PERCIVAL detector is a CMOS imager designed for the soft X‐ray regime at photon sources. Although still in its final development phase, it has recently seen its first user experiments: ptychography at a free‐electron laser, holographic imaging at a storage ring and preliminary tests on X‐ray photon correlation spectroscopy. The detector performed remarkably well in terms of spatial resolution achievable in the sample plane, owing to its small pixel size, large active area and very large dynamic range; but also in terms of its frame rate, which is significantly faster than traditional CCDs. In particular, it is the combination of these features which makes PERCIVAL an attractive option for soft X‐ray science.
    Keywords: ddc:548 ; X‐ray detectors ; soft X‐rays ; ptychography ; holographic imaging ; XPCS ; detectors
    Language: English
    Type: doc-type:article
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  • 2
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of food science & technology 9 (1974), S. 0 
    ISSN: 1365-2621
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: A detailed study was made of the relationship between the tenderness of beef and the extent of its early post mortem length change, observations covering the range from more than twice to less than one half the initial excised length. The ‘peak’ of toughness previously shown to occur at about 35–40% shortening was more accurately defined, and a secondary, much smaller peak was detected in muscles which had been held in a 25–30%extended state during rigor onset. These results strongly support the view that ultimate actomyosin configuration is a major determinant of meat tenderness, since the complex pattern of tenderness variation with length change can be explained entirely in terms of the varying degree of overlap of actin and myosin filaments.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of food science & technology 9 (1974), S. 0 
    ISSN: 1365-2621
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: In an attempt to explain the paradoxical tenderizing, observed when muscle shortening exceeds about 40% of the initial excised length, the fine structure of highly cold-shortened muscle has been studied by light and electron microscopy. Tissue at the ‘peak’ of toughness is uniformly shortened and shows no sign of structural weakness or damage, but with further shortening super-contraction and node formation take place in an increasing proportion of the sarcomeres. Widespread fibre fracturing is seen in the internodal zones when the length change has exceeded about 50%. This disruption appears sufficient to account for the declining toughness which accompanies supra-physiological shortening.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Thirty healthy patients were randomised to receive either a single bolus dose of rocuronium 0.6mg.kg−1 or vecuronium 0.1 mg.kg−1 during halothane anaesthesia. Onset time, duration 25, duration 75 and train-of-four 70 were measured. The onset of neuromuscular blockade following rocuronium was more rapid than vecuronium (p = 0.0001). All other pharmacodynamic parameters were similar. During the first minute following injection of the neuromuscular blocking agent, the heart rate increased by 36% in the rocuronium group but remained stable in those patients who received vecuronium (p = 0.0008). No adverse effects were noted in either group.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Anaesthesia 59 (2004), S. 0 
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Directly measured subcutaneous tissue oxygen tension reflects the adequacy of regional tissue oxygenation and influences wound infection and healing. We tested the hypothesis that off-pump coronary artery bypass would increase subcutaneous tissue oxygen tension by minimizing cardiopulmonary bypass-induced systemic inflammation. Ten consecutive patients scheduled for off-pump coronary artery bypass were compared with 10 undergoing conventional cardiopulmonary bypass. All patients had a tissue oxygen sensor implanted longitudinally into the subcutaneous tissue of the leg in the saphenous vein harvest wound. Data were collected from closure of the saphenous vein wound for 20 h postoperatively. Although more off-pump patients had only one coronary artery grafted, postoperative subcutaneous tissue oxygen tension was significantly higher in off-pump patients throughout the 20-h study. Absolute mean (SD) differences ranged from 2.3 kPa in the first 2 h [14.4 (2.3) vs. 12.1 (2.4) kPa in off-pump and cardiopulmonary bypass, respectively, p = 0.04] to 4.6 kPa at 8–10 h [14.0 (3.5) vs. 9.3 (2.7) kPa, p = 0.007]. In contrast, there were no significant differences in arterial oxygen tension values over this period. Mean arterial pressure and haemoglobin were transiently higher in off-pump patients at 8 h only. We conclude that postoperative subcutaneous tissue oxygen tension was higher for 20 h after off-pump compared with conventional cardiopulmonary bypass.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 36 (1971), 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: SUMMARY The muscles of stress-susceptible animals exhibit an extremely rapid rate of glycolysis when subjected to either excision or exsanguination anoxia. The adaptation of the whole-body perfusion technique to the intact animal makes it possible to study the influence of a wide variety of reagents while maintaining the structural integrity of the musculature. This paper outlines the perfusion technique as applied in this laboratory to adult pigs, and in addition describes a biopsy procedure which permits the use of one longissimus muscle as an untreated control for the other, thereby overcoming the problem of wide inter-animal variability. Results are presented of experiments designed to validate the perfusion and biopsy routines, and an account is given of preliminary investigations of the effects of added calcium and magnesium ions.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 41 (1976), 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: Bovine sternomandibularis muscles were cooked rapidly at various stages of rigor development. The pre-rigor tissue shortened considerably more than that in which rigor was established, but its cooking loss was less; it was also significantly more tender, particularly if cooked within about 3 hr of slaughter. Changes in pH during cooking were small. At all stages of rigor onset, the samples cooked in a microwave oven were more tender than those cooked by boiling, and in the pre-rigor material weight losses were smaller when microwave heating was used. The results suggest the possible use of pre-rigor meat in the preparation of pre-cooked, ready-to-eat, meat-based foods.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Industrial and engineering chemistry 4 (1965), S. 129-133 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Earth and Planetary Sciences 17 (1989), S. 439-472 
    ISSN: 0084-6597
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
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