A new support for the immobilization of β-d-galactosidase from Kluyveromyces lactis was developed, consisting mesoporous silica/titania with a chitosan coating. This presents high available surface area and adequate pore size optimizing efficiency enzyme and, furthermore, maintaining its activity. The obtained supported biocatalyst applied in hydrolytic activity tests o-NPG, showing 1223 Ug−1, ...

Abstruct-Cons:ler a communication channel that consists of several subchannels transmitting simultaneously and asynchronously. As an example of this scheme, we can consider a board with several chips. The subchannels represent wires connecting between the chips where differences in the lengths of the wires might result in asynchronous reception. In current technology, the receiver acknowledges ...

As the number of Wireless Sensor Networks (WSNs) applications is anticipated to grow substantially in coming years, new and radical strategies for effectively managing such networks will be needed. One possibility involves endowing the network with an autonomic capability to dynamically adapt itself to the prevailing network operating conditions, even while communications sessions are active. T...

This manual has been prepared by or for the Government and, except to the extent indicated below, is public property and not subject to copyright. Reprint or republication of this manual should include a credit substantially as Table 3-1 Safety integrity levels – low demand operation and table 3-2 Safety integrity levels – continuous operation are reprinted with permission from the Internationa...

This paper traces the origins and evolution of the Network Time Protocol (NTP) over two decades of continuous operation. The technology has been continuously improved from hundreds of milliseconds in the rowdy Internet of the early 1980s to tens of nanoseconds in the Internet of the new century. It includes a blend of history lessons, technology milestones and series of experiments that shape, ...

Due to depleting fossil fuels and a rapid increase in the fuel prices globally, the search for alternative energy sources is becoming more and more significant. One of such energy source is the wind energy which can be harnessed with the use of wind turbines. The fundamental principle of wind turbines is to convert the wind energy into first mechanical and then into electrical form. The relativ...