Spectrophotometry of the Chromosphere.: (Plates 7, 8, 9.)

9 8 7

buckling of viscoelastic composite plates using the finite strip method

در سال های اخیر، تقاضای استفاده از تئوری خطی ویسکوالاستیسیته بیشتر شده است. با افزایش استفاده از کامپوزیت های پیشرفته در صنایع هوایی و همچنین استفاده روزافزون از مواد پلیمری، اهمیت روش های دقیق طراحی و تحلیل چنین ساختارهایی بیشتر شده است. این مواد جدید از خودشان رفتارهای مکانیکی ارائه می دهند که با تئوری های الاستیسیته و ویسکوزیته، نمی توان آن ها را توصیف کرد. این مواد، خواص ویسکوالاستیک دارند....

n g , 1 4 : 8 7 2 - 8 8 9 , 1 9 9 3 ESTIMATING WAVEFORM RELAXATION CONVERGENCEB

Critical limitations of the waveform relaxation method concern the unsolved problems of estimating convergence and controlling the iteration. In this paper, waveform relaxation is applied to a linear, second-order model system and is studied in the Laplace domain. By placing the iteration in a weighted space, computable estimates for a window of rapid convergence are developed. Numerical experi...

Isoflurane inhibits the neurotransmitter release machinery 7 8 9 10

43 44 Despite their importance, the mechanism of action of general anesthetics is still 45 poorly understood. Facilitation of inhibitory GABAA receptors plays an important role in 46 anesthesia but other targets have also been linked to anesthetic actions. Anesthetics are 47 known to suppress excitatory synaptic transmission, but it has been difficult to determine 48 whether they act on the neu...

p - - ? a 03 7 & 01 \ 9 F - 9 bo 8 + 8 - - - 27 Advanced Photon Source ' ! " ?

White-beam slits are precision high-heat-load devices used on beamlines of the Advanced Photon Source (APS) to trim and shape the incoming x-rays beam before the beam is transmitted to other optical components. At the APS, the insertion devices that generate the x-ray are very powerful. For example, the heat flux associated with an x-ray beam generated by Undulator A will be on the order of 207...