Abstract: Provided are a Cinnamomum burmannii monoterpene synthase CbTPS1, an amino acid sequence thereof, a nucleic acid molecule encoding the protein, an use thereof in preparing the monoterpene synthase, and a method for preparing dextrorotatory borneol by using the Cinnamomum burmannii monoterpene synthase CbTPS1.

Abstract: Provided are a Blumea balsamifera monoterpene synthase BbTPS3 and related biological materials thereof and use thereof. BbTPS3 is: A1) a protein having the amino acid sequence shown in SEQ ID NO: 2; A2) a fusion protein obtained by linking protein-tags at the N-terminus or/and the C-terminus of the protein shown in SEQ ID NO: 2; and A3) a protein having at least 90% identity and the same function as the protein shown in A1), which is obtained by performing substitution and/or deletion and/or addition of one or more amino acid residues on the amino acid sequence shown in SEQ ID NO: 2. BbTPS3 can catalyze GPP to form l-borneol, and can be used to regulate and produce plant monoterpene compounds and cultivate Blumea balsamifera (L.) DC.

Abstract: Disclosed is a graded early warning system for rollover of heavy-duty truck based on time-varying interactive Kalman filtering and early warning method thereof. The system includes an infrared speed measuring module, a gyroscope, a humidity signal acquisition sensor, a bluetooth data transmission module and a main control chip. The infrared speed measuring module, the gyroscope, the humidity signal acquisition sensor are respectively connected with input ends of the main control chip through control lines. A video output end of the main control chip is connected with a liquid crystal display through video signal line. The main control chip is wirelessly connected with a mobile phone through the bluetooth data transmission module.

Abstract: This disclosure describes a sensor for detecting vibrations, particularly low-frequency vibrations. The sensor is of a cascaded gapped cantilever construction and may include a single sensing beam extending from a base to a proof mass across the plurality of gaps, a mechanical beam opposite the piezoelectric beam. The sensor may be included in a system including a housing, a support, and electronic components for converting and measuring signal. The sensor may be mounted to an item of furniture, such as a bed or a sofa, and measure physiological data including ballistocardiogram and respiratory data of a subject positioned on the furniture.

Abstract: Disclosed is a graded early warning system for rollover of heavy-duty truck based on time-varying interactive Kalman filtering and early warning method thereof. The system includes an infrared speed measuring module, a gyroscope, a humidity signal acquisition sensor, a bluetooth data transmission module and a main control chip. The infrared speed measuring module, the gyroscope, the humidity signal acquisition sensor are respectively connected with input ends of the main control chip through control lines. A video output end of the main control chip is connected with a liquid crystal display through video signal line. The main control chip is wirelessly connected with a mobile phone through the bluetooth data transmission module.

Abstract: This disclosure describes a sensor for detecting vibrations, particularly low-frequency vibrations. The sensor is of a cascaded gapped cantilever construction and may include a single sensing beam extending from a base to a proof mass across the plurality of gaps, a mechanical beam opposite the piezoelectric beam. The sensor may be included in a system including a housing, a support, and electronic components for converting and measuring signal. The sensor may be mounted to an item of furniture, such as a bed or a sofa, and measure physiological data including ballistocardiogram and respiratory data of a subject positioned on the furniture.

Abstract: A resonant sensor is provided. The resonant sensor may have a structure including a base portion, a mass portion, and a mechanical beam connecting the base portion to the mass portion. In addition, the structure may include a first sensing beam formed from a sensing material responsive to mechanical strain where a gap is formed between the sensing beam and the mechanical beam.