44 results about "Autoregulation" patented technology

The present invention provides compositions and methods for programming mammalian cells to perform desired functions. In particular, the present invention provides compositions and methods for programming stem cells to differentiate into a desired cell type. A quorum sensing systems that regulates the expression of cell fate regulators is introduced into mammalian host cells, such as stem cells. The quorum sensing systems generally comprises vectors that express the components of a bacterial quorum sensing pathway, including proteins which catalyze the synthesis of an autoinducer and a gene encoding a regulatory partner of the autoinducer, and vectors in which genes encoding cell fate regulators are operably linked to a promoter induced by the autoinducer / regulatory partner complex. The system can also comprise vectors in which genes encoding additional cell fate regulators are operably linked to a promoter that is induced by a factor synthesized in response to a first stage of differentiation, so that a second stage of differentiation is triggered.

A method and apparatus for monitoring a subject's autoregulation function state is provided. The method includes: a) continuously sensing a tissue region of the subject with a tissue oximeter, the sensing producing first signals, and determining frequency domain tissue oxygen parameter values; b) continuously measuring a blood pressure level of the subject using a blood pressure sensing device, the measuring producing second signals, and determining frequency domain blood pressure values; c) determining a coherence value indicative of the subject's autoregulation state in each of a plurality of different frequency bands; and d) determining a peak coherence value indicative of the subject's autoregulation state based on the determined coherence value from each of the plurality of differentfrequency bands.

The invention relates to a sewage treatment plant based on mechanical recompression technique, which comprises a separator, an evaporation heat exchanger, a circulating pump, a feed pump, a vacuum pump, a compressor and a condensate pump. The sewage treatment plant is also provided with a control system, wherein the control system comprises a PLC (programmable logic controller) control station; the PLC control station is connected with a touch screen and an I / O expansion module through control lines; and the I / O expansion module is respectively connected with a steam regulating valve, the circulating pump, the compressor, the condensate pump, a feed regulating valve of the feed pump and a vacuum regulating valve of the vacuum pump through signal lines. The sewage treatment plant has the advantages of reasonable structural design and high operability, and can effectively implement sewage treatment. The sewage treatment plant can automatically regulate the motor frequency and feed rate according to the evaporation capacity, thereby implementing unmanned control state in deed and automatic control, and achieving the goals of energy saving and emission reduction by dynamic equilibrium, frequency autoregulation and other techniques.

A method for outputting cerebral blood flow auto-regulation index, a storage medium and ultrasonic equipment. The method comprises : collecting cerebral blood flow data and continuous blood pressure data of multiple channels, wherein sampling points of the channels are synchronous; separately selecting the cerebral blood flow data and the continuous blood pressure data of each channel according to a preset data quantity, so as to obtain sample data segments of each channel; and synchronously analyzing the sample data segments of each channel, and displaying analysis results of each channel on a display interface by groups. The method achieves the purpose of real-time and synchronous displaying of multiple groups of cerebral blood flow auto-regulation indexes in a transcranial Doppler system, and makes the use convenient for users.

The invention discloses a method and system for assessing the automatic adjustment ability of cerebral blood flow, relating to the medical field, comprising the following steps: using an ultrasonic external counterpulsation device to perform two external counterpulsation operations on an individual, and applying the external counterpulsation operation twice. During the implementation of the external counterpulsation operation, continuous blood pressure monitoring and cerebral blood flow velocity monitoring are carried out on the individual; using the blood pressure effect separation method, the cerebral blood flow velocity change value and the blood pressure data change value are obtained; using the transfer function method Analyzing and obtaining the relationship between the change value of the cerebral blood flow velocity and the change value of the blood pressure data; according to the relationship between the change value of the cerebral blood flow velocity and the change value of the blood pressure data, evaluating the cerebral blood flow autoregulation ability of the individual . Through the implementation of the present invention, the interference of factors other than blood pressure that affect the change of cerebral blood flow velocity can be eliminated, and the accuracy of evaluation of cerebral blood flow autoregulation ability can be improved.