Iron is one of the most stubborn impurities in quartz minerals, and iron content partly determines various applications quartz. can exist forms fluid inclusions, lattice impurities. The removal consequent purification minerals are key processes to obtaining high-quality methods including conventional pre-treatment, magnetic separation, acid leaching, microbiological, roasting, flotation, as wel...

The role of the filamentous hemagglutinin (FHA) and the lymphocytosis-promoting factor hemagglutinin (LPF) in pertussis pathogenesis and immunity is the subject of active investigation. To be certain of their role as protective antigens, the hemagglutinins must be pure and free of each other. This report describes procedures to separate and purify FHA and LPF from the culture supernatant of sta...

Phase separation is a simple, efficient, and cheap method to purify and concentrate detergent-solubilized membrane proteins. In spite of this, phase separation is not widely used or even known among membrane protein scientists, and ready-to-use protocols are available for only relatively few detergent/membrane protein combinations. Here, we summarize the physical and chemical parameters that in...

Yoichiro Ito introduced countercurrent chromatography (CCC) in 1966, reporting the separation of blood plasma cells with a sealed helical tube. Since then, CCC has been a fertile ground for instrumental and technical innovation. The key innovation of CCC was to use centrifugal forces to retain the stationary liquid phase in the column in such a way that it is able to interact dynamically with t...

Owing to recent developments in molecular biology and biotechnology, we have seen rapid growth in the development of industrial processes to produce valuable substances by microbial means. The idea is not new to the fermentation technologist because they are the means for producing beverages, antibiotics, and many other complex organic materials for commercial use. There are some inherent engin...

There is an urgent need for accessible purification and separation strategies of atomically precise metal clusters in order to promote the study of their fundamental properties. Although the separation of mixtures of atomically precise gold clusters Au25L18, where L are thiolates, has been demonstrated by advanced separation techniques, we present here the first separation of metal clusters by ...

The respiratory protection against chemical warfare agents (CWA) has become a worldwide security concern in light of the many recent international threats utilising CWA. Till date the carbon filtration was adequate to protect the soldiers from the threats of CWA. With the advent of further advancements in the CWA a new threat is looming large that is known as the carbon breakers. pressure swing...

The silica boron sulfuric acid nanoparticles (SBSANs) as an efficient heterogeneous solid acid catalyst with both Brønsted and Lewis acidic sites catalyzed the preparation of bis-4-hydroxycoumarin derivatives using reaction of aldehydes and 4-hydroxycoumarin under mild and solvent-free condition at room temperature. This new and efficient methodology has advantages in comparison with currently ...

The need of establishment biohydrogen purification techniques is due the fact that production will be completely transformed into industrial scale soon or later. For process development to commercially feasible, all involved, including should low cost, practical and efficient; particularly when technically challenging. In any case, carbon dioxide other gaseous impurities are usually evolved dur...