A review of integration strategies for solid oxide fuel cells

Due to increasing oil and gas demand, the depletion of fossil resources, serious global warming, efficient energy systems and new energy conversion processes are urgently needed. Fuel cells and hybrid systems have emerged as advanced thermodynamic systems with great promise in achieving high energy/power efficiency with reduced environmental loads. In particular, due to the synergistic effect of using integrated solid oxide fuel cell (SOFC) and classical thermodynamic cycle technologies, the efficiency of the integrated system can be significantly improved. This paper reviews different concepts/strategies for SOFC-based integration systems, which are timely transformational energy-related technologies available to overcome the threats posed by climate change and energy security.     

典型工业网络系统实验平台的设计

基于工业以太网技术及现场总线技术,设计并建立了一个典型的工业网络系统实验平台,阐述了系统总体设计思想、工程架构,以及具体的软硬件实现方案.详细描述了基于OPC技术的工业以太网与现场总线PROFIBUS通信连接设计、现场总线PROFIBUS与AS-i网络互联设计,阐述了该系统平台的科研及实验功能,其具体工程实现技术也可以很容易地应用于实际的现场总线控制系统设计实践中.     

Kinetic studies of sulfuric acid decomposition over Al–Fe2O3 catalyst in the sulfur-iodine cycle for hydrogen production

The decomposition of H₂SO₄ to produce SO₂ is the reaction with the highest energy demand in the sulfur-iodine cycle and it shows a large kinetic barrier. In the present study, alumina supported iron (III) oxide has been chosen for a detailed kinetic study. Experiments were carried out in the temperature range of 1023 K–1173 K using space hour velocities in the range of 0.146–0.731 kmol/kg-h in a quartz tube double stage continuous flow fixed bed reactor with 98% sulfuric acid feed over alumina supported Fe₂O₃ catalyst, nitrogen as inert carrier gas. From the homogeneous kinetic analysis, the apparent activation energy (E_A) was found to be 138.6 kJ/mol. This high activation energy indicates that the experiments were conducted in a kinetic controlled regime. The catalyst was well characterized by XRD, BET, TPR/TPO, SEM and FT-IR before and after reaction.     

Award for Distinguished Scientific Contributions: Michael M. Merzenich.

Michael M. Merzenich received the 2001 Award for Distinguished Scientific Contributions. His accomplishments include (1) clarifying our understanding of the traditional 'S-I' cortex by demonstrating that each of its four cytoarchitectonic areas contains a separate representation of the body; (2) providing the first demonstrations of plasticity in the adult primate brain following peripheral nerve injury, altering the landscape of behavioral neuroscience; (3) being the first to suggest that this injury-induced plasticity relies on mechanisms that are responsible for normal learning-related changes in the somatosensory system, spawning a search for the mechanisms if plasticity in the adult brain that is now arguably the central focus of neuroscience; and (4) taking the principles derived from his work on plasticity and applying them to help improve speech reception and recognition in children with speech-processing difficulties. (PsycINFO Database Record (c) 2011 APA, all rights reserved)