Membrane bioreactor systems can enhance anaerobic lactic acid fermentation by reducing product inhibition, thus increasing productivity. In batch fermentations, the bioconversion of glucose is strongly inhibited in the presence of more than 100 g·L-1 lactic acid and is only possible when the product is simultaneously removed, which can be achieved by ceramic membrane filtration. The crossflow v...

ZnO nanoparticle was successfully prepared by microwave irradiation method in various oxygen/nitrogen ratio atmospheres. In the present method, steel wool was used as a heat generator by microwave irradiation. The highest heating rate of ~200°C/sec for the reaction was achieved under the highest oxygen concentration, 80%, whereas the lowest hating rate was ~40°C/sec. The product prepared in a l...

The identification of technologically innovating firms is related to the development of indicators of their innovation activity. In this study, we carry out a review of indicators of firms’ technological innovation activity and then classify them according to whether they are based on inputs or outputs of the innovation process, and to the sources of the information they consider, whether prima...

BACKGROUND The optimal type of bearing for hip arthroplasty remains a matter of debate. Ceramic-on-polyethylene (CoP) bearings are frequently used in younger and more active patients to reduce wear and increase biocompatibility compared to Metal-on-Polyethylene (MoP) bearings. However, in comparison to metal heads, the fracture risk of ceramic heads is higher. In addition, ceramic head fracture...

Ceramic wool was prepared by the melt-spinning method, and diameter main factor severely affecting performance of final product which difficult to check online. The current study discusses approximate simulation fiber formation presents a fast precision measuring method predict ceramic using an improved Back-Propagation (BP) neural network. Particle Swarm Optimizer (PSO) employed optimize netwo...

The ability to develop a reliable bond between a ceramic restoration and the tooth is a key element in the clinical success with CAD/CAM direct ceramic restorations. Composite resin luting agents are currently the preferred material of choice for adhesively bonding ceramic restorations. They provide several advantages, such as a durable and strong bond to the tooth and ceramic, good color match...

This article describes the improvement of a model of collaborative design for the ceramic industry. A new stakeholder playing a crucial role is now included in the design process, i.e. the customer. Specifically, we present a pilot validation study for the framework that aims to analyse how the environment, experiences and reference criteria of different types of the customers (commercial deale...

BACKGROUND An increasing demand for esthetic restorations has resulted in an increased use of all-ceramic restorations, such as zirconium. However, one of the challenges the orthodontist must be willing to face is how to increase bond strength between the brackets and various ceramic restorations.Bond strength can beaffected bybracket type, by the material that bracketsaremade of, and their bas...

The ceramic-insulated cathode leads have been subjected to cyclic heating to a maximum temperature in excess of 7000C. Two such tests have been made, the metal-ceramic seal failing on the first lead, while a coppermolybdenum soldered joint failed on the second lead after six cycles. The design of the cathode lead has been changed to eliminAte this joint. Some experiments have been performed wit...

Classification systems for all-ceramic materials are useful for communication and educational purposes and warrant continuous revisions and updates to incorporate new materials. This article proposes a classification system for ceramic and ceramic-like restorative materials in an attempt to systematize and include a new class of materials. This new classification system categorizes ceramic rest...