Currently, many research from domestic and foreign on improving anti-rollover performance of vehicle mainly focus on the electronic control of auxiliary equip- ment, do not make full use of suspension layout to optimi...Currently, many research from domestic and foreign on improving anti-rollover performance of vehicle mainly focus on the electronic control of auxiliary equip- ment, do not make full use of suspension layout to optimize anti-rollover performance of vehicle. This investigation into anti-rollover propensity improvement concentrates on the vehicle parameters greatly influencing on anti-rollover propensity of vehicle. A simulation based on fishhook procedure is used to perform design trials and evaluations aimed at ensuring an optimal balance between vehicle＇s design parameters and various engineering capacities, the anti-rollover propensity is optimized at the detailed design stage of a new SUV model. Firstly a four-DOF theoretical kinematic model is established, then a complete multi-body dynamics model built in ADAMS/car based on the whole vehicle parameters is correlated to the objective handing and stability test results of a mule car. Secondly, in fish- hook test simulations, the Design of Experiments method is used to quantify the effect of the vehicle parameters on the anti-rollover performance. By means of the simulation, the roll center height of front suspension should be more than 30 mm, that of rear suspension less than 150 mm, and the HCG less than 620 mm for the SUV. The ratio of front to rear suspension roll stiffness should be ranged from 1.4 to1.6 for the SUV. As a result, at the detailed design stage of product, the anti-rollover performance of vehicle can be improved by optimizing chassis and integrated vehicle parameters.展开更多
ENT practitioners encounter different types of nasal foreign bodies in their daily practices. A variety of nasal foreign bodies have been described in literature. Here we present a case of an entangled fish hook in th...ENT practitioners encounter different types of nasal foreign bodies in their daily practices. A variety of nasal foreign bodies have been described in literature. Here we present a case of an entangled fish hook in the nose of a 30-year-old fisherman.展开更多
Objective To observe the clinical efficacy of acupuncture at the superficial fascia for cervical type of cervical spondylosis. Methods Acupuncture at the superficial fascia was carried out for 48 patients with cervica...Objective To observe the clinical efficacy of acupuncture at the superficial fascia for cervical type of cervical spondylosis. Methods Acupuncture at the superficial fascia was carried out for 48 patients with cervical type of cervical spondylosis by selecting the tender points on both sides of the cervical vertebral body and on the neck and shoulders. The treatment was conducted for once a day and treatment for 5 times was considered as 1 course of treatment. Two days were free from treatment between courses, and 3 courses were needed in total. The scores of McGill pain questionnaire [MPQ, including three indexes： Pain rating index （PRI）, Visual analogue scale （VAS） and Present pain intensity （PPI） ] of patients before and after treatment were compared, therapeutic effct of cervical type of cervical spondylosis was evaluated. Results According to the comparison before and after treatment, the scores of PRI （29.44±9.26 vs13.15±7.04）, VAS （5.63±2.73 vs 1.23±1.15）, and PPI （3.00±1.24 vs 0.38±0.49） of patients with cervical type of cervical spondylosis reduced significantly （all P〈0.05）, indicating that the differences were statistically significant. Among 48 cases, cured 40 cases （83.33%）, markedly effective 4 cases （8.34%）, effective 3 cases （6.25%）, ineffective i case （2.08%）. The total effective rate was 97.92% （47/48）. Conclusion The curative effect of acupuncture at the superficial fascia for cervical type of cervical spondylosis was satisfactory.展开更多
基金Supported by Guangdong Provincial Technology-Planning Project of China(Grant Nos.2014B010106002,2013B10402006,2015B010137002)
文摘Currently, many research from domestic and foreign on improving anti-rollover performance of vehicle mainly focus on the electronic control of auxiliary equip- ment, do not make full use of suspension layout to optimize anti-rollover performance of vehicle. This investigation into anti-rollover propensity improvement concentrates on the vehicle parameters greatly influencing on anti-rollover propensity of vehicle. A simulation based on fishhook procedure is used to perform design trials and evaluations aimed at ensuring an optimal balance between vehicle＇s design parameters and various engineering capacities, the anti-rollover propensity is optimized at the detailed design stage of a new SUV model. Firstly a four-DOF theoretical kinematic model is established, then a complete multi-body dynamics model built in ADAMS/car based on the whole vehicle parameters is correlated to the objective handing and stability test results of a mule car. Secondly, in fish- hook test simulations, the Design of Experiments method is used to quantify the effect of the vehicle parameters on the anti-rollover performance. By means of the simulation, the roll center height of front suspension should be more than 30 mm, that of rear suspension less than 150 mm, and the HCG less than 620 mm for the SUV. The ratio of front to rear suspension roll stiffness should be ranged from 1.4 to1.6 for the SUV. As a result, at the detailed design stage of product, the anti-rollover performance of vehicle can be improved by optimizing chassis and integrated vehicle parameters.
文摘ENT practitioners encounter different types of nasal foreign bodies in their daily practices. A variety of nasal foreign bodies have been described in literature. Here we present a case of an entangled fish hook in the nose of a 30-year-old fisherman.
基金Supported by Project of Academic School Studio of Zheng’s Acupuncture Manipulation in GansuState Administration of Traditional Chinese Medicine of the People’s Republic of China:2305135901
文摘Objective To observe the clinical efficacy of acupuncture at the superficial fascia for cervical type of cervical spondylosis. Methods Acupuncture at the superficial fascia was carried out for 48 patients with cervical type of cervical spondylosis by selecting the tender points on both sides of the cervical vertebral body and on the neck and shoulders. The treatment was conducted for once a day and treatment for 5 times was considered as 1 course of treatment. Two days were free from treatment between courses, and 3 courses were needed in total. The scores of McGill pain questionnaire [MPQ, including three indexes： Pain rating index （PRI）, Visual analogue scale （VAS） and Present pain intensity （PPI） ] of patients before and after treatment were compared, therapeutic effct of cervical type of cervical spondylosis was evaluated. Results According to the comparison before and after treatment, the scores of PRI （29.44±9.26 vs13.15±7.04）, VAS （5.63±2.73 vs 1.23±1.15）, and PPI （3.00±1.24 vs 0.38±0.49） of patients with cervical type of cervical spondylosis reduced significantly （all P〈0.05）, indicating that the differences were statistically significant. Among 48 cases, cured 40 cases （83.33%）, markedly effective 4 cases （8.34%）, effective 3 cases （6.25%）, ineffective i case （2.08%）. The total effective rate was 97.92% （47/48）. Conclusion The curative effect of acupuncture at the superficial fascia for cervical type of cervical spondylosis was satisfactory.
