Current limit, viii

Section VIII Volatile Acidity Recommended limits current BATF standards Prohibited above BATF limits... 

The high temperatures and low pressures needed for this endothermic reaction are conditions conducive to deactivation due to coke deposition through the Boudouard reaction and the decomposition of CH4 [12]. Current research has focused on Group VIII metals [13] on a variety of supports. Most of the work has been on Rh and Ni supported on AI2O3, Ti02, Si02, and MgO [1, 8, 14-17] with some interest in Pt and Pd [5, 10, 18-19]. High activity and low carbon deposition have been observed on Rh catalysts [20-23], but the limited supply of this metal when compared to others reduces the potential for it to be commercially feasible [6]. Many studies have been done on Ni [24-28] which show that the support has a profound effect on the activity and deactivation of the catalyst. Severe deactivation due to carbonaceous deposits was found to... 

The paper is organized as follows. Section II contains a discussion of band bounds in disordered materials, distinguishing between band edges and band limits. Section III introduces the mobility-edge concept. Section IV introduces the current version of the simplest band model of an amorphous semiconductor. Section V contains a discussion of the band-edge features in the electronic structure of a disordered material and classifies them according to the degree to which they can be represented as universal. In Section VI the effects of electron-phonon interaction are discussed. In Section VII there is a brief dicussion of fast processes such as the optical absorption and in Section VIII of slow processes such as the dc transport properties. We conclude in Section IX with an overall summary of the present status of the theory. 

Compliance with the design rules of ASME Code Section VIII of 1949 and subsequent verification of the stress analysis and comparison with the current ASME Section III Class 1 design allowable stresses ensure that the tank stresses are within allowable limits and provide adequate safety margins. In another stress evaluation performed by Quadrex Corporation, ASME Section VIII, Division 2 rules and allowable stresses were used, and the stresses in the tank and the expansion ring were found to satisfy the applicable criteria. 

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