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  • 1
    Electronic Resource
    Electronic Resource
    Fluoride salts as supersonic nozzle materials for hot fluorine (1994)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 65 (1994), S. 3587-3588 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: An intense supersonic beam of atomic fluorine has been generated using nozzles fabricated from single-crystal CaF2 and MgF2. The latter material has been tested up to 1000 °C with no observable damage. This is (approximately-greater-than)250 °C hotter than previously achieved, increasing the atomic beam intensity by (approximately-greater-than)5×.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1144542
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  • 2
    Electronic Resource
    Electronic Resource
    Residue depletion studies on danofloxacin in the chicken (1994)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 42 (1994), S. 289-294 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf00038a012
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  • 3
    Electronic Resource
    Electronic Resource
    The Development of a Flexible Modular MEd (1994)
    Bingley : Emerald
    International journal of educational management 8 (1994), S. 35-39 
    Details
    ISSN: 0951-354X
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Education
    Notes: Attempts to trace the history and development of the Master of EducationDegree at the University of Bath. Highlights the comparatively smalldifferences which exist between the Bath MEd and those from otherinstitutions, namely: its greater flexibility in allowing students to"pay as they earn" and take as long as they wish in building up theirportfolios of modules; the three modes of studying the modules, i.e.taught, distance learning and school-based tuition; the linking oftaught and school-based modules; and the introduction of a Summer Schoolfor outstation students. These features have enabled the University ofBath to offer the course, on a part-time basis, to teachers livingconsiderable distances away, particularly those living and workingoverseas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/09513549410049321
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  • 4
    Electronic Resource
    Electronic Resource
    Becoming strangers: the changing family caregiving relationship in Alzheimer's disease (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of advanced nursing 20 (1994), S. 0 
    Details
    ISSN: 1365-2648
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Alzheimer-type dementia (AD) is an insidious pervasive debilitating disorder that destroys the affected person's capacity for self-care In this grounded theory study, we explored the reciprocal process of becoming strangers in which eastern Canadian family caregivers and care recipients with AD interact on a continuum from intimacy to alienation through dimensions of dawning, holding on and letting go The findings illuminate the experiences of family members who struggle on a daily basis with their commitment to the person they knew and their increasing detachment from the stranger that person has become With the increasing emphasis on home care, these findings offer insights for individual care and health policy development
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2648.1994.tb02378.x
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  • 5
    Electronic Resource
    Electronic Resource
    Haemorrhagic pituitary tumours (1994)
    Springer
    Neuroradiology 36 (1994), S. 111-114 
    Details
    ISSN: 1432-1920
    Keywords: Pituitary tumour ; Haemorrhage ; Magnetic resonance imaging ; Bromocriptine medication
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In a group of 69 patients with pituitary tumours, 12 were found to have evidence of intratumoral haemorrhage on MRI, characterized by high signal intensity on short TR/TE sequences. This was verified in all but 1 patient. The majority of the bleedings occurred in macroadenomas. Five (42%) were prolactinomas and 4 (33%) were non-functioning adenomas. There were 2 GH- and 1 ACTH-secreting tumours. All 5 patients with prolactinomas were on bromocriptine medication. Two of the patients had a clinical picture of pituitary apoplexy. The haemorrhage was not large enough to prompt surgery in any of the patients. However, surgical verification of the diagnosis was obtained in 5 cases, while 6 patients were examined with follow-up MRI.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588072
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  • 6
    Electronic Resource
    Electronic Resource
    Multiple intracranial arteriovenous malformations: a case report (1994)
    Springer
    Neuroradiology 36 (1994), S. 157-159 
    Details
    ISSN: 1432-1920
    Keywords: AVM ; Stereotaxic irradiation ; Angiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Multiple intracranial arteriovenous malformations are rare. There are a few cases in the literature with up to three malformations in one patient. A child with seven separate cerebral malformations is now described. There was no history of haemorrhage, but only of febrile seizures. The malformations were discovered at CT and verified at angiography. Six were selected for stereotaxic irradiation with the multicobalt unit. The seventh was considered too big for irradiation and suitable for surgery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588088
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  • 7
    Electronic Resource
    Electronic Resource
    Meristem activity and biomass production as response mechanisms in two forest herbs (1994)
    Springer
    Oecologia 100 (1994), S. 29-37 
    Details
    ISSN: 1432-1939
    Keywords: Development ; Seasonal growth patterns ; Nutrient and light responses ; Actaea spicata ; Geranium sylvaticum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Actaea spicata and Geranium sylvaticum are deciduous rosette herbs, frequently coexisting in nutrient-rich forests of boreal Sweden. A. spicata is restricted to this habitat whereas G. sylvaticum has a wider ecological amplitude. To explore the different distributions of these species we studied the growth mechanisms by which they responded to nutrient and light supply. Plants raised from seeds were grown under four combinations of light and nutrient supplies and growth was followed for 20 weeks. Growth responses were measured as biomass accumulation and meristem activity, i.e. leaf development by shoot meristems. Biomass accumulation and meristem activity were affected by nutrient and light treatments. However, A. spicata responded more to nutrients, whereas G. sylvaticum responded more to light, and low resource supply shortened the time during which shoot meristems of A. spicata developed leaves without a corresponding effect on biomass accumulation. In G. sylvaticum, the periods of leaf development and biomass accumulation were the same, but a relationship between high development rates and peak allocation of biomass to shoot meristems indicated a storage function of these during leaf development. We conclude that the inflexible growth of A. spicata, mainly affected by nutrient supply, makes it less competitive in open habitats and restricts it to shaded, nutrient-rich habitats. G. sylvaticum should be more successful in habitats subjected to unpredictable disturbances, due to a flexible growth morphology and a dynamic function of meristems that buffers against variation in nutrient supply and facilitates positive light responses. Meristematic data should be included in interspecific comparisons on growth responses to different resource supplies. Unless species have the same growth mechanism, it is not satisfactory to study biomass-related traits alone, as internal constraints concerning plant development might confuse the interpretation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00317127
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  • 8
    Electronic Resource
    Electronic Resource
    The effect and transmission of one isolate of the rust Puccinia minussensis on five clones of Lactuca sibirica (1994)
    Springer
    Oecologia 97 (1994), S. 407-411 
    Details
    ISSN: 1432-1939
    Keywords: Systemic rust ; Clonal plant Epidemiology ; Host response ; Transmission
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In a greenhouse experiment, one isolate of the systemic rust fungus Puccinia minussensis was applied to the host clone from which it was collected and to four other clones of the host Lactuca sibirica. The plants were grown in fertilized potting compost (N+) to promote growth and in peat (N-) to hamper growth, for three growing periods during one year. The results show that the expression of host plant resistance could not be determined visually, but there were differences in effects on the clones. The rust isolate was found to produce a significantly higher percentage of diseased shoots on clone A (the clone it was taken from). Furthermore, the rust also had the strongest effect on both biomass and shoot production on clone A compared to the other four clones. The data suggest that the rust isolate is highly adapted to the clone from which it originated. We suggest that selection in this system has not favoured a benign pathogen and that similar patterns are likely to occur for plants that (i) rarely establish by seeds; (ii) have strong lateral growth; and (iii) may persist for long periods once established.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00317332
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  • 9
    Electronic Resource
    Electronic Resource
    Distribution of cells in soft tissue and fluid space around hollow and solid implants in the rat (1994)
    Springer
    Journal of materials science 5 (1994), S. 269-278 
    Details
    ISSN: 1573-4838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: The development of the tissue surrounding an implanted material is anticipated to be regulated by the biological factors in the interface as well as the physicochemical properties of the implant material. In the present study light microscopic morphometry and transmission electron microscopy were used to evaluate the distribution of cells adjacent to the implant surface of different implant designs (hollow and solid implants) and materials (titanium and polytetrafluoroethylene). An increased number of leukocytes, predominantly PMN, was retrieved from the exudate inside hollow implants 1 and 9 days after surgery. In contrast, the increased cellularity in the soft tissue around the hollow implants was mainly due to an increased number of monocytes/macrophages and fibroblasts. The presence of a fluid space around both hollow and solid implants was revealed by the use of an electropolishing technique and ground sections. In the fluid space around solid titanium the concentration of leukocytes and the proportion of PMN decreased between 1 and 7 days. After 1 day the majority of leukocytes were freely suspended in the fluid and were rarely directly apposed to the implant surface. A majority of the monocytes/macrophages present in the fluid space after 7 days were attached to the fibrin matrix at the border between the fluid space and the reorganized tissue. Our studies demonstrate that hollow implants promote the influx and a persistence of PMN in the interior of the implant in comparison with the tissue surrounding the hollow and solid implants. Furthermore, during the first week after implantation inflammatory cells are not preferentially distributed directly on the titanium implant surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00122396
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  • 10
    Electronic Resource
    Electronic Resource
    Fluorapatite-coated implants in experimental arthritis: the response of rabbit trabecular bone (1994)
    Springer
    Journal of materials science 5 (1994), S. 59-66 
    Details
    ISSN: 1573-4838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Fluorapatite-coated implants have been studied for the first time under non-optimal tissue conditions and have shown promising results. The influence of arthritis on the tissue response to implants coated with fluorapatite (FA) was studied in an arthritis model. Immune complex-induced arthritis was elicited in the right knee-joint of eight rabbits while the contralateral joint served as control. Ti-6Al-4V cylinders, plasma-spray coated with FA were implanted in the patellar groove (PG) and medial femoral condyle (MC) in each knee for 6 weeks. Histology showed a close bone-to-implant contact at the lateral surface of the implants without any intervening soft tissue or inflammatory cells. Histomorphometry revealed no differences in bone apposition between control and arthritic joints, but the MC-implants showed more bone apposition than the PG-implants. Parts of the implant surface were not covered by bone, but were in contact with bone marrow. The FA coating on the implant sides did not show signs of resorption in the control and arthritic joints, but the coating on the upper surface of the implants was partially resorbed in both the control and arthritic joints. The arrangement and composition of the regenerating tissue in this location was profoundly influenced by the inflammatory process in the arthritic joints. In a previous study, using the same arthritis model, an impaired bone formation was found around commercially pure titanium implants in arthritic joints. In the present study, the unimpaired bone formation around FA-implants in the arthritic joints indicates that an FA coating adds advantageous properties to metal implants used in tissues influenced by an on-going inflammation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00121692
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