The paper presents a technical solution which provides energy saving at full speed, as well as duplication of screw propeller and main propulsion system incase it＇s out of order. The description of the corresponding ...The paper presents a technical solution which provides energy saving at full speed, as well as duplication of screw propeller and main propulsion system incase it＇s out of order. The description of the corresponding device, designed for transport refrigerator ship, is shown as well as its location on board. Value of energy saving from the use of contra propeller is estimated. The results of the assessment required power to move the ship at low speed by the action of the contra propeller operating in the reactive mode are demonstrated. It is shown, that the ship equipped with the proposed device will get the additional class notation related to the redundancy or duplication of the propulsion system of Russian Maritime Register of Shipping.展开更多
Objective： According to the theory of traditional Chinese medicine, the effect of cervical stimulation on autonomic nervous system activity in humans was investigated. Methods： Healthy young male volunteers were sel...Objective： According to the theory of traditional Chinese medicine, the effect of cervical stimulation on autonomic nervous system activity in humans was investigated. Methods： Healthy young male volunteers were selected as subjects of the trial. The upper cervical spine （C2-5） was stimulated bilaterally with spinal manipulation, and changes in heart rate and heart rate variability were calculated as measures of effects on autonomic nervous system tone. Results： Thirty healthy young male volunteers were tested. It was found that heart rate decreased （R-R interval prolonged） significantly. SDNN and total power spectrum increased significantly, indicating an increase in sympathetic tone. Conclusion： Cervical manipulation can regulate the autonomic nervous system tone in healthy young men, and it suggests a possibility of treating cardiovascular diseases such as arrhythmia with cervical manipulation.展开更多
文摘The paper presents a technical solution which provides energy saving at full speed, as well as duplication of screw propeller and main propulsion system incase it＇s out of order. The description of the corresponding device, designed for transport refrigerator ship, is shown as well as its location on board. Value of energy saving from the use of contra propeller is estimated. The results of the assessment required power to move the ship at low speed by the action of the contra propeller operating in the reactive mode are demonstrated. It is shown, that the ship equipped with the proposed device will get the additional class notation related to the redundancy or duplication of the propulsion system of Russian Maritime Register of Shipping.
文摘Objective： According to the theory of traditional Chinese medicine, the effect of cervical stimulation on autonomic nervous system activity in humans was investigated. Methods： Healthy young male volunteers were selected as subjects of the trial. The upper cervical spine （C2-5） was stimulated bilaterally with spinal manipulation, and changes in heart rate and heart rate variability were calculated as measures of effects on autonomic nervous system tone. Results： Thirty healthy young male volunteers were tested. It was found that heart rate decreased （R-R interval prolonged） significantly. SDNN and total power spectrum increased significantly, indicating an increase in sympathetic tone. Conclusion： Cervical manipulation can regulate the autonomic nervous system tone in healthy young men, and it suggests a possibility of treating cardiovascular diseases such as arrhythmia with cervical manipulation.
