6 results about "Respiratory quotient" patented technology

The application provides a clinical marker screening method and system after metabolic response typing and application. Specifically, according to the change of metabolic indexes of normal weight people and overweight / obese people before and after meals, three clusters based on respiratory quotient (RQ) are found; the fasting fat oxidation capacity, postprandial metabolic response and postprandial blood glucose response of people belonging to different clusters also have different dynamic change patterns. In addition, key biomarkers distinguishing the three clusters are also found; the prediction model constructed by using the key biomarkers can accurately divide the subjects into three RQ clusters and can be used for predicting the results of weight loss intervention and life intervention guidance. The system constructed according to the clinical markers of the application has high sensitivity and accuracy, the indexes used are easy to obtain, and has good clinical application prospect.

The invention provides a key marker combination for individualized diet intervention decision and application thereof. Specifically, three clusters based on a respiratory quotient (RQ) are found according to metabolic index change conditions before and after meals of people with normal body weight and overweight / obese people. In addition, key biomarkers for distinguishing the three clusters are also found; a prediction model constructed by using the key biomarkers can accurately divide subjects into three RQ clusters, and can be used for predicting a weight loss intervention result, so that the prediction model can be used as a reference for providing an individualized diet or exercise intervention decision. A system constructed according to the key marker is high in sensitivity and accuracy, used indexes are easy to obtain, and the key marker has a good clinical application prospect.

The invention relates to an evaporator defrosting method and device, a refrigeration house refrigerating system and a readable storage medium, and the method comprises the steps that a breathing quotient corresponding to a storage object in a target area and the environment humidity and the environment temperature corresponding to the target area are obtained, and the target area is the area where an evaporator is used for refrigeration; based on the respiration quotient and the environment humidity, the carbonation degree of the frost layer is determined, and based on the environment temperature, the temperature fluctuation rate in the target area is determined; based on the carbonation degree and the temperature fluctuation rate of the frost layer, a target defrosting strategy is determined, and the target defrosting strategy is a defrosting strategy matched with the carbonation degree and the temperature fluctuation rate of the frost layer in multiple defrosting strategies; and according to the target defrosting strategy, the evaporator is defrosted. In this way, the defrosting strategy can be dynamically adjusted based on the carbonation degree of the frost layer and the temperature fluctuation rate in the target area, the defrosting process can give consideration to system energy consumption and energy efficiency at the same time, and the refrigeration storage refrigerating system has the energy-saving effect.

The invention discloses a nutrition metabolism parameter real-time calculation system and method based on multi-mode measurement, and belongs to the technical field of medical health, the system collects respiratory gas through a high-speed vacuum sampling pump at the frequency of 200-500 times per second, and the oxygen consumption and the carbon dioxide emission are obtained through treatment with an accurate dilution method; three testing modes of a mask method, a face tent dilution ventilation method and a breathing machine direct connection method are supported; a self-adaptive variable coefficient control algorithm is established, when the variable coefficient is smaller than 5%, the test time is 10-15 minutes, and when the variable coefficient is larger than or equal to 5%, the test time is prolonged to 25 minutes or above; calculating resting energy consumption, respiration quotient and metabolic state based on an improved Weir formula; the urine nitrogen consumption is predicted through a gas-per-mouth correlation model, the error is controlled within 2%, and the method is high in measurement precision, wide in application range and convenient to operate, and provides a reliable basis for clinical precise nutrition support.

This invention provides a method and system for dynamic clustering and metabolic response typing based on respiratory quotient (RQ) in relation to nutritional challenges. Specifically, based on changes in metabolic indicators before and after meals in normal-weight and overweight / obese individuals, three types of RQ clusters are identified. The typing model constructed using these three clustering features can effectively classify the metabolic response of the population, thereby further predicting weight loss outcomes after weight loss intervention and also applicable to personalized lifestyle guidance. The typing method and system of this invention have high sensitivity and accuracy, and the indicators used are readily available, showing promising clinical application prospects.

FIELD: medical equipment.SUBSTANCE: device for measuring energy exchange by indirect calorimetry in animals includes a measuring chamber (1), a carbon dioxide absorber (4) and a peristaltic pump (2) for drawing air from the measuring chamber and pumping it into a sensor unit (3). The sensor unit includes a pressure sensor, a temperature sensor, oxygen concentration sensors and carbon dioxide concentration sensors. The sensor unit is connected to a carbon dioxide absorber, which is connected to a measuring chamber. The pressure sensor is connected via a feedback system to the oxygen generator (5), which is connected to the measuring chamber. The oxygen generator, peristaltic pump and sensor unit are connected to a microcontroller (6) to send data from the sensors, as well as automatically calculated values of absorbed oxygen, released carbon dioxide and respiratory quotient as an indicator of energy exchange, to the computer for recording in a file at selected intervals.EFFECT: dynamic assessment of factors influencing the physiology of an animal, with automated calculation of the volume of carbon dioxide released, the volume of oxygen absorbed by the animal per unit of time, and the calculation of the respiratory quotient.1 cl, 4 dwg, 1 tbl