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P Altmann K Eklund E Georgiades B Rudelstorfer 《Canadian Metallurgical Quarterly》1976,36(11):914-919
The paper refers to 126 patients on whom a plastic diaphragma operation was performed at the 1st Department of Obstet. and Gynec. of the University of Vienna. Based on the results one year after the operation, the success chances are shown and set into relation to several preexistent factors, such as severity of the incontinence, weight, parity, age and conduct of life. An increasing of the two first mentioned factors led to a significant deterioration of results. The influence of an incontinence remains incontested, yet a higher parity does not lead to significantly poorer operation results. As to the factor "age", there were no significant differences in our material. Conduct of life and additional stress in women employed in an occupation are being discussed. Furthermore it was possible to confirm the postoperative space of time needed until restoration of an undisturbed bladder function as a relatively reliable prognostic hint to the expected success of the operation. For this confirmation an objective examination method (sphincterotonometry) was used. 相似文献
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This study takes inventory of available evidence on response repetition (RR) effects in task switching, in particular the evidence for RR cost when the task switches. The review reveals that relatively few task-switching studies in which RR effects were addressed have shown statistical support for RR cost, and that almost all are affected by 1 of 2 potential artifacts, either a response bias caused by disallowing stimulus repetitions or the effect of including stimulus repetitions in data analysis. New results with these factors controlled support an episodic retrieval model in which features of the retrieved trace, including the stimulus but also the task, task cue, and response, facilitate or interfere with performance depending on whether they match or mismatch the current processing context. (PsycINFO Database Record (c) 2011 APA, all rights reserved) 相似文献
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<正>如今,绿色屋面在建筑物设计中代表着一种重要元素,越来越受到人们的青睐。这是因为绿色屋面可以使屋面材料免受大风、火灾以及外界气候条件如紫外线辐射、极端温度的影响,从而有可能延长屋面防水系统的预期寿命。绿色屋面还可以延缓雨水进入排水系统,可以吸收二氧化 相似文献
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R Parry D Plowman HT Delves NB Roberts JD Birchall JP Bellia A Davenport R Ahmad I Fahal P Altmann 《Canadian Metallurgical Quarterly》1998,13(7):1759-1762
BACKGROUND: Aluminium toxicity in dialysis patients is well described. Aluminium has a close chemical affinity with silicon. Silicon may have a role in protection against aluminium toxicity. METHODS: We measured serum aluminium and silicon levels from haemodialysis patients from four different centres. RESULTS: Though no relationship was seen across all centres combined, in one centre there was a reciprocal relationship in patients on home haemodialysis (who did not require reverse osmosis). Median (range) aluminium levels were higher, 2.2 (0.4-9.6) micromol/l when serum silicon was less than 150 micromol/l, and lower, 1.1 (0.2-2.8) micromol/l when serum silicon levels were greater than 150 micromol/l (P = 0.03). CONCLUSIONS: In patients treated by haemodialysis without reverse osmosis high serum silicon concentrations were associated with lower serum aluminium concentrations than those with low serum silicon. Further work needs to confirm a preventative role for silicon in the accumulation and subsequent toxicity of aluminium in dialysis patients. 相似文献
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DNA repair is an important factor in the abolition or manifestation of mutations. Since intrinsic somatic mutations may be related to the occurrence of autoimmunity, DNA repair was investigated by measuring unscheduled DNA synthesis in lymphocytes of rheumatoid arthritis patients by autoradiography. Likewise, unscheduled DNA synthesis was investigated in mycoplasma- and Freund's adjuvant-induced arthritis in rats. Both in human rheumatoid arthritis and experimentally-induced arthritis the capacity for repairing lesions in DNA induced by gamma-irradiation of cells was reduced, while an increased rate of thymidine-incorporation into DNA was found after UV-irradiation. The results are discussed in relation to endonucleases of viral or mycoplasmal origin. 相似文献
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A new method for computing eigenmodes of a laser resonator by the use of finite element analysis is presented. For this purpose, the scalar wave equation (delta + k2)E(x, y, z) = 0 is transformed into a solvable three-dimensional eigenvalue problem by the separation of the propagation factor exp(-ikz) from the phasor amplitude E(x, y, z) of the time-harmonic electrical field. For standing wave resonators, the beam inside the cavity is represented by a two-wave ansatz. For cavities with parabolic optical elements, the new approach has successfully been verified by the use of the Gaussian mode algorithm. For a diode-pumped solid-state laser with a thermally lensing crystal inside the cavity, the expected deviation between Gaussian approximation and numerical solution could be demonstrated clearly. 相似文献