نتایج جستجو برای: membrane materials
تعداد نتایج: 812920 فیلتر نتایج به سال:
We show theoretically that networks of membrane memcapacitive systems-capacitors with memory made out of membrane materials-can be used to perform a complete set of logic gates in a massively parallel way by simply changing the external input amplitudes, but not the topology of the network. This polymorphism is an important characteristic of memcomputing (computing with memories) that closely r...
Background: Application of membrane technology to wastewater treatment has expanded over the last decades due to increasingly stringent legislation, greater opportunities for water reuse/recycling processes and continuing advancement in membrane technology. Objectives: In the present study, a bench-scale submerged microfiltration membrane bioreactor (MBR) was used to assess the treatment of tex...
Background & Aims: Aluminum has many harmful effects on biochemical and physiological structures even behavioral disorders. Materials & Methods: The rabbits were classified into treatment and control groups. 12.5mg/kg aluminum chloride was injected to treatment group animals and simultaneously the same dose of deionized water to control group animals in anesthesia state for 7 weeks, intraper...
Membrane processes are today one of the key technologies for industrial gas separations and show growing interest for future use in sustainable production systems. Besides materials development, dedicated engineering methods are of major importance for the rigorous and most efficient design of membrane units and systems. Starting from approaches based on simplified hypotheses developed in the 5...
Background and Objective: Though amniotic membrane has recently been introduced as a natural tissue with anti-cancer properties, there are inadequate studies about involved mechanisms. In this study, the effect of amniotic membrane culture supernatant on viability of cancer cells via applying different doses was evaluated. Apoptosis as a possible mechanism of inducing cancer cell death by amnio...
Background and Objective: Human amniotic membrane, which is the innermost layer of placenta, contains beta defensins and elafin, which both have antibacterial properties. These antibacterial activities depend on the conditions and environmental factors. The purpose of this study was to evaluate the effect of environmental factors on human amniotic membrane antibacterial properties against Klebs...
Polymer membranes are attractive for molecular-scale separations such as hydrogen purification because of inherently low energy requirements. However, membrane materials with outstanding hydrogen separation performance in feed streams containing high-pressure carbon dioxide and impurities such as hydrogen sulfide and water are not available. We report highly permeable, reverse-selective membran...
Long-term stability is a key property of enzyme membranes that can be used for biosensors, bioreactors, and bio-fuel cells. This review discusses factors that decrease the stability, and provides two examples of enzyme membranes, a polyion complex membrane and a cellulose membrane, with which stability loss can be avoided. By using these materials, long-term stability was improved. These suppor...
A review is given of the development of the concept of an artificial tympanic membrane. Starting with homologous tympanic membranes we compared biodegradable collagen materials (homologous and heterologous) and biodegradable synthetic materials, poly-glycolic acid, poly-lactic acid and poly-alpha-amino acids. As a non-degradable material microporous PTFE and bisphenol-A poly (carbonate) were in...
Increasing population and industrial growth, combined with climate change, led to global water problems. This review paper summarizes the next-generation hybrid graphene-based membrane materials th...
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