1. A system for in-vitro measurement of blood glucose concentration in a human, comprising:
a base station comprising,
a base power source to supply power to components of the base station;
an implantable sensor for generating measurement signals that are correlated to a blood glucose concentration to be measured;
a pre-amplifier for amplifying the measurement signals;
a signal processor for processing the measurement signals to produce compressed measuring data that is compressed at least ten-times compared to the measurement signals,
base memory for storing compressed measurement data;
a transmitter for wireless transmission of the compressed measurement data; and,
a display device comprising,
a display device power source that has greater capacity than the base power source to supply power to components of the display device;
a user input for inputting data into the display device;
a receiver for receiving the wireless transmission of the compressed measurement data from the base unit,
a microprocessor for processing the compressed measurement data to determine the blood glucose concentration;
a display for displaying blood glucose concentration.
2. The system as in claim 1 wherein the measurement signals are compressed through the selected sampling of the measurement signals.
3. The system as in claim 1 wherein the measurement signals are compressed through statistical techniques.
4. The system as in claim 3 wherein the statistical technique selects more than one measurement signal and determines the median of the more than one measurement signal.
5. The system as in claim 4 wherein the median of the more than one measurement signal is calculated by determining a slope of a line connecting each pair of measurement signals and calculating a median value of each slope of the line connecting each pair of measurement signals.
6. The system as in claim 5 wherein the median of the more than one measurement signal for each time interval is calculated from the median value of each slope of the line connecting each pair of measurement signals.
7. The system as in claim 1 wherein display device further comprises a blood glucose meter.
8. A base station for in-vitro measurement of blood glucose concentration in a human, comprising:
a base power source to supply power to components of the base station;
an implantable sensor for generating measurement signals that are correlated to a blood glucose concentration to be measured;
a pre-amplifier for amplifying the measurement signals;
a signal processor for processing the measurement signals to produce compressed measuring data that is compressed by at least a factor of ten compared to the measurement signals by selected sampling of the measurement signals and statistical processing of the measurement signals;
base memory for storing compressed measurement data; and,
a transmitter for wireless transmission of the compressed measurement data.
9. The base station as in claim 8 wherein the statistical processing of the measurement signals selects more than one measurement signal and determines the median of the more than one measurement signal.
10. The base station as in claim 9 wherein the median of the more than one measurement signal is calculated by determining a slope of a line connecting each pair of measurement signals and calculating a median value of each slope of the line connecting each pair of measurement signals.
11. The base station as in claim 10 wherein the median other more than one measurement signal for each time interval is calculated from the median value of each slope of the line connecting each pair of measurement signals.
12. A base station for in-vitro measurement of blood glucose concentration in a human, comprising:
a base power source to supply power to components of the base station;
an implantable sensor for generating measurement signals that are correlated to a blood glucose concentration to be measured;
a pre-amplifier for amplifying the measurement signals;
means for signal processing for processing the measurement signals to produce compressed measuring data;
base memory for storing compressed measurement data; and,
a transmitter for wireless transmission of the compressed measurement data.
13. A method of compressing data from in-vitro measurement of an analyte concentration in a human, comprising:
forming pairs of measurement signals from raw data generated for a lime interval;
determining a slope of a line connecting each pair of measurement signals;
calculating a median value of each slope of the line connecting each pair of measurement signals; and,
calculating a compressed data value for each time interval from the median value of each slope of the line connecting each pair of measurement signals and the compressed data value of a preceding time interval.
14. The method as in claim 13, further comprising,
disregarding raw data that are a substantial deviation from other raw data.
15. The method as in claim 13, further comprising,
determining raw data consecutively over constant time intervals using time marks including a date and a time.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for enhanced oil recovery from a carbonate reservoir, comprising the steps of:
injecting an aqueous solution of a low pH polyamino carboxylic acid chelating agent into the core of the reservoir to generate the production of carbon dioxide in situ; and
subsequently injecting a fluid into the core to complete recovery of oil from the reservoir, the fluid being selected from the group consisting of seawater, a solution of a high pH chelating agent, and a low salinity fluid.
2. The method for enhanced oil recovery according to claim 1, wherein the aqueous solution comprises an aqueous solution of H2Na2-ethylenediaminetetraacetic acid having a pH of about 4.5.
3. The method for enhanced oil recovery according to claim 1, wherein the aqueous solution comprises an aqueous solution of H3-hydroxyethyl ethylenediamine triacetic acid having a pH of about 2.5.
4. The method for enhanced oil recovery according to claim 1, wherein the aqueous solution comprises an aqueous solution of H2NaHEDTA having a pH of about 4.
5. The method for enhanced oil recovery according to claim 1, wherein the aqueous solution has a concentration of about 5 wt %.
6. The method for enhanced oil recovery according to claim 1, wherein said step of injecting the aqueous solution further comprises injecting the aqueous solution of a low pH polyamino carboxylic acid chelating agent at a temperature of about 100\xb0 C. and at an injection rate of 0.25 mLmin.
7. The method for enhanced oil recovery according to claim 1, further comprising the step of flooding the core of the carbonate reservoir with seawater prior to said step of injecting the aqueous solution of the low pH polyamino carboxylic acid chelating agent into the core.