Abstract: The present application discloses a carrier wave distortion compensation method for an MWD mud continuous wave system, comprising: in the downhole, modulating the carrier wave according to the transmission data to obtain a mud continuous wave signal to be transmitted; transmitting the mud continuous wave signal to the ground via a mud channel; denoising the received pressure signal on the ground to obtain a denoised mud continuous wave signal; performing subsequent processing on the denoised mud continuous wave signal to obtain the final transmission data; and performing downhole distortion compensation before modulating the carrier wave or performing ground distortion compensation on the denoised mud continuous wave signal before performing subsequent processing. The present application reduces the bit error rate of the MWD mud continuous wave system by performing waveform distortion compensation prior to downhole modulation or during performing signal processing on the ground.

Abstract: Disclosed is a synchronization method for an MWD mud pulse telemetry system. The method comprises: determining a synchronous training sequence on the basis of a frame structure of downhole sent data; constructing a correlation between the down-hole sending synchronous training sequence waveform and the uphole synchronous training sequence local waveform by means of the irrelevance of the trigonometric function; and performing correlation calculation on the synchronous training codeword waveform, which is received uphole and is subjected to the first modulation, and the synchronous training sequence local waveform, which is subjected to the second modulation, so as to obtain a correlation curve, and finding a synchronous position by means of the correlation curve.

Abstract: The present application discloses a carrier wave distortion compensation method for an MWD mud continuous wave system, comprising: in the downhole, modulating the carrier wave according to the transmission data to obtain a mud continuous wave signal to be transmitted; transmitting the mud continuous wave signal to the ground via a mud channel; denoising the received pressure signal on the ground to obtain a denoised mud continuous wave signal; performing subsequent processing on the denoised mud continuous wave signal to obtain the final transmission data; and performing downhole distortion compensation before modulating the carrier wave or performing ground distortion compensation on the denoised mud continuous wave signal before performing subsequent processing. The present application reduces the bit error rate of the MWD mud continuous wave system by performing waveform distortion compensation prior to downhole modulation or during performing signal processing on the ground.

Abstract: Compositions and methods involving microspheres composed of mesenchymal cells such as dermal papilla cells (DPCs) and extracellular matrix, epithelial cell such as keratinocyte are disclosed. It has been discovered that by balancing the proportion of DPCs and extracellular matrix in the DPC-matrix mixture, and by incubating a particular range of small volume of the DPCmatrix mixture, DPC-matrix microspheres can be formed that have useful properties. Most significantly, the resulting DPC-matrix microspheres are particularly suited to be used to produce bioengineered hair follicles that have features of native hair follicles.

Abstract: Disclosed is a synchronization method for an MWD mud pulse telemetry system. The method comprises: determining a synchronous training sequence on the basis of a frame structure of downhole sent data; constructing a correlation between the down-hole sending synchronous training sequence waveform and the uphole synchronous training sequence local waveform by means of the irrelevance of the trigonometric function; and performing correlation calculation on the synchronous training codeword waveform, which is received uphole and is subjected to the first modulation, and the synchronous training sequence local waveform, which is subjected to the second modulation, so as to obtain a correlation curve, and finding a synchronous position by means of the correlation curve.

Abstract: The present disclosure relates to a system and a method for displaying a prompt message. The method includes displaying a first prompt message in an entry box on a user interface of an electronic terminal; determining there is an input instruction in the entry box; replacing the first prompt message with a second prompt message; and changing display status of the first prompt message.

Abstract: The present disclosure relates to a system and a method for displaying a prompt message. The method includes displaying a first prompt message in an entry box on a user interface of an electronic terminal; determining there is an input instruction in the entry box; replacing the first prompt message with a second prompt message; and changing display status of the first prompt message.

Abstract: Embodiments are directed to receiving, by a device comprising a processor, an indication that an air conditioning unit should turn on, commanding, by the device, a valve to open a specified extent based on the received indication, and subsequent to the valve opening to the specified extent, powering-on a piece of equipment that has an impact on refrigerant flow in the air conditioning unit.

Abstract: The present disclosure relates to a system and a method for displaying a prompt message. The method includes displaying a first prompt message in an entry box on a user interface of an electronic terminal; determining there is an input instruction in the entry box; replacing the first prompt message with a second prompt message; and changing display status of the first prompt message.

Abstract: Embodiments are directed to receiving, by a device comprising a processor, an indication that an air conditioning unit should turn on, commanding, by the device, a valve to open a specified extent based on the received indication, and subsequent to the valve opening to the specified extent, powering-on a piece of equipment that has an impact on refrigerant flow in the air conditioning unit.

Abstract: A technique includes providing a mathematical model of reactant production by a reactant processor of a fuel cell system. The technique also includes during a time period in which the fuel cell system is continuously operating, adapting the model based on feedback received from the fuel cell system and controlling the fuel cell system using an indication of the reactant production from the model.

Abstract: In a fuel cell system, a reactor oxidizes excess fuel from an exhaust of a fuel cell. Based on at least fuel flow to the reactor and a temperature associated with the reactor, a change to be made to the oxidant flow to the reactor is determined. A setting of at least one oxidant flow control element is adjusted in response to the determined change.

Abstract: A technique that is usable with a fuel cell system that provides power to a load and is directed toward learning an optimal reactant stoichiometric ratio(s) for starting up the fuel cell system. In accordance with the technique, data representative of a plurality of reactant flows, each of which corresponds to an output power level provided by a fuel cell stack is stored in a memory. Upon startup of the system, a particular reactant flow is provided to the fuel cell stack based on the stored data. A new reactant flow that corresponds to current output power level being provided by the fuel cell stack is learned by adjusting the reactant flow until the fuel cell system is operating at a desired performance level. The stored data is then adapted based on the learned new reactant flow and the adapted data replaces the data that was previously stored in the memory. In this manner, a more exact starting reactant stoichiometric ratio(s) may be determined while the fuel cell system is in operation.

Abstract: Input parameters regarding operation of a fuel cell system are received, where the input parameters include, as examples, a setting of a valve, a setting of a blower, and a temperature in a reformer. The input parameters are applied to a model. Based on applying the input parameters to the model, an indication regarding source fuel flow in the fuel cell system is produced.

Abstract: A technique that is useable with a fuel cell system includes adjusting operating parameters of a fuel cell system to obtain an optimal reactant stoichiometric ratio and thereby maximize the operating efficiency and/or performance of the system. An initial starting point for the reactant stoichiometric ratio is determined based on the output power provided by a fuel cell stack. Thereafter, the optimal reactant stoichiometric ratio is obtained by adjusting the reactant stoichiometric ratio based upon the observed system operating parameters and their response to the adjustment. In this manner, an optimal reactant stoichiometric ratio is reached and maintained while the fuel cell system is in operation, thus, maximizing the system's efficiency and performance.

Abstract: A technique that is usable with a fuel cell stack includes detecting an unhealthy condition of the stack, such as carbon monoxide poisoning, flooding, or fuel starvation, and implementing a recovery action to correct the detected condition. The technique further includes observing the response of the stack to the recovery action to distinguish between unhealthy conditions that have the same indications. In the event that multiple unhealthy conditions are present concurrently, the technique also includes determining an appropriate sequence of recovery actions to correct each of the unhealthy conditions.

Abstract: A technique that is usable with a fuel cell stack includes determining a cell voltage profile of the fuel cell stack and determining an average cell voltage of the fuel cell stack. The technique includes detecting carbon monoxide poisoning of the fuel cell stack based on the cell voltage profile and the average cell voltage.