A new technology of CO2 supplementary for microalgae cultivation on large scale – A spraying absorption tower coupled with an outdoor open runway pond
Contributors: Chun-Dan Zhang, Wei Li, Yun-Hai Shi, Yuan-Guang Li, Jian-Ke Huang, Hong-Xia Li
... An effective CO2 supply system of a spraying absorption tower combined with an outdoor ORWP (open raceway pond) for microalgae photoautotrophic cultivation is developed in this paper. The microalgae yield, productivity and CO2 fixation efficiency were investigated, and compared with those of bubbling method. The maximum yield and productivity of biomass were achieved 0.927gL−1 and 0.114gL−1day−1, respectively. The fixation efficiency of CO2 by microalgae with the spraying tower reached 50%, whereas only 11.17% for bubbling method. Pure CO2 can be used in the spraying absorption tower, and the flow rate was only about one third of the bubbling cultivation. It shows that this new method of quantifiable control CO2 supply can meet the requirements of the growth of microalgae cultivation on large-scale.
The effect of Nigella sativa Linn. seed on memory, attention and cognition in healthy human volunteers
Contributors: Muhammad Shahdaat Bin Sayeed, Md. Asaduzzaman, Helal Morshed, Md. Monir Hossain, Mohammad Fahim Kadir, Md. Rezowanur Rahman
... Experimental evidences have demonstrated that Nigella sativa Linn. seed (NS) has positive modulation effects on aged rats with memory impairments, prevents against hippocampal pyramidal cell loss and enhances consolidation of recall capability of stored information and spatial memory in rats. NS has neuroprotective, nephroprotective, lung protective, cardioprotective, hepatoprotective activities as established by previous studies on animals. Several clinical trials with NS on human have also demonstrated beneficial effect.
Contributors: Leonid B. Datsevich
... In previous papers [L.B. Datsevich, Appl. Catal. A 250 (2003) 125–141; L.B. Datsevich, Catal. Today 79–80 (2003) 341–348; L.B. Datsevich, Appl. Catal. A 247/1 (2003) 101–111] devoted to the oscillatory motion of liquid in catalyst pores in gas–liquid reactions with gas and/or heat production, some directions of catalyst and process development have been discussed. It has been supposed that modification of the pore structure of catalysts can provoke oscillations in pores, leading to an acceleration of internal mass transfer and to an increase in the overall reaction rate. The present paper deals with a confirmation of this theoretical conclusion. It shows that an unsophisticated change in the pore structure can intensify the process of 1-octene hydrogenation to n-octane on a Ni tablet catalyst up to three times.