초록 ▼

A method and apparatus for treating a fluid. A method for treating a fluid may include combining two or more separate streams into a common stream and then splitting the common stream into a new set of separate streams wherein the separate streams may possess different properties. The separate strea

A method and apparatus for treating a fluid. A method for treating a fluid may include combining two or more separate streams into a common stream and then splitting the common stream into a new set of separate streams wherein the separate streams may possess different properties. The separate streams may be combined to produce a gradient, such as a concentration gradient or shear gradient. The apparatus of the invention may provide a network of fluidic channels that may be used to manipulate a fluid to produce, for example, a gradient or a series of solutions containing a substance at varying concentrations.

대표청구항 ▼

A method and apparatus for treating a fluid. A method for treating a fluid may include combining two or more separate streams into a common stream and then splitting the common stream into a new set of separate streams wherein the separate streams may possess different properties. The separate strea

A method and apparatus for treating a fluid. A method for treating a fluid may include combining two or more separate streams into a common stream and then splitting the common stream into a new set of separate streams wherein the separate streams may possess different properties. The separate streams may be combined to produce a gradient, such as a concentration gradient or shear gradient. The apparatus of the invention may provide a network of fluidic channels that may be used to manipulate a fluid to produce, for example, a gradient or a series of solutions containing a substance at varying concentrations. a pressure of≤100 torr and at reaction temperatures ranging from 90° C. to 140° C. Starch phosphates exhibiting different properties are obtained by reacting at different reaction temperatures, are distinguished by a good biodegradability, and are resistant to hydrolysis under normal conditions. diate frequency has a mean value enslaved to a predetermined value equal to the product of said pilot frequency and said first integer number. 5. The receiver according to claim 2, wherein said automatic frequency control stage includes: a first frequency divider for providing, in response to said fourth signal at said intermediate frequency, a seventh electric signal at a first frequency equal to said intermediate frequency divided by a first integer number; a second frequency divider for providing, in response to said sixth signal at said pilot frequency, a ninth electric signal at a second frequency equal to said pilot frequency divided by a second integer number; a phase and frequency comparator for providing, in response to said seventh signal at said first frequency and to said ninth signal at said second frequency, an eighth electric signal representative of the difference between said first and second frequencies; and a loop filter for providing, in response to said eighth signal, said control signal representative of the difference between said first and second frequencies, so that said intermediate frequency has a mean value enslaved to a predetermined value equal to the product of said pilot frequency and said first integer number divided by said second integer number. 6. The receiver according to claim 1, wherein said locked loop further includes a frequency locked loop filter arranged to receive said fifth signal and to provide in response a tenth electric signal to said oscillator, so as to reduce deviation of said fourth signal. 7. The receiver according to claim 1, wherein said mixer unit includes, connected in series, a mixer, an intermediate frequency filter and an amplifier/limiter. 8. The receiver according to claim 1, wherein said pilot frequency is equal to 19 kHz.