Objective: To develop a kind self active resistance movement training equipment for cervical spine, so as to restore the dynamic balance of the front and back muscle strength of the cervical spine in order to correct ...Objective: To develop a kind self active resistance movement training equipment for cervical spine, so as to restore the dynamic balance of the front and back muscle strength of the cervical spine in order to correct the abnormal physiological radian of the cervical spine, thereby relieving the clinical symptoms. Methods: The air spring with adjustable strength was used to provide the power of resistance active movement, and the neurological training cervical audio-visual synthesis training software was used to automatically guide patients to perform resistance active movement training of the cervical spine. Thirty two patients with cervical spondylosis were enrolled for treatment, and SPSS26 was used to statistically analyze the VAS, Lovett muscle strength, head and neck range of motion and C2-3 vertebral body curvature before and after the treatment. Result: There were significant differences in posterior cervical muscle strength (Lovett), dizziness, shoulder and neck pain (VAS) and C2-3 vertebral curvature before and after training in 32 patients (p˂0.001). Conclusion: The application of neurological training cervical vertebra self rehabilitation training instrument can effectively relieve clinical symptoms, restore head and neck range of motion, improve nape muscle strength, restore the dynamic balance of front and rear cervical muscle strength, and also can correct the abnormal physiological radian of the cervical vertebra.展开更多
<div style="text-align:justify;"> In this paper, we report a single-mode Fabry-Pérot long wave infrared quantum cascade lasers based on the double phonon resonance active region design. For room t...<div style="text-align:justify;"> In this paper, we report a single-mode Fabry-Pérot long wave infrared quantum cascade lasers based on the double phonon resonance active region design. For room temperature CW operation, the wafer with 35 stages was processed into buried heterostructure lasers. For a 4 mm long and 13 μm wide laser with high-reflectivity (HR) coating on the rear facet, continuous wave output power of 43 mW at 288 K and 5 mW at 303 K is obtained with threshold current densities of 2.17 and 2.7 kA/cm2. The lasing wavelength is around 10.5 μm. Single mode emission was observed for this particular device over the whole investigated current and temperature range. </div>展开更多
This paper presents the results of numerical investigation of the current pulses characteristics in SF_(6)/CF_(4)mixtures for the negative point-plane corona discharge.The pressure and the temperature of gas mixtures ...This paper presents the results of numerical investigation of the current pulses characteristics in SF_(6)/CF_(4)mixtures for the negative point-plane corona discharge.The pressure and the temperature of gas mixtures are 0.4 MPa and 300 K,respectively.The CF_(4)content varies from20%to 80%.The 2D axisymmetric geometry with point-plane electrodes is investigated,and the three drift-diffusion equations are solved to predict the characteristics of the negative corona discharge.In addition,Poisson’s equation is coupled with the above three continuity equations to calculate the electric field.In order to calculate the electron impact coefficients,including the Townsend ionization and attachment coefficients,as well as the mobilities and diffusion coefficients for electrons,the two-term Boltzmann equation is solved.The characteristics of three ionic species at five stages of the first current pulse in 60%SF_(6)-40%CF_(4)and20%SF_(6)-80%CF_(4)mixtures are selected to discuss the development mechanism of current pulses.Moreover,the reduced electric field strengths at the corresponding time instants are presented to help understand the discharge process.The current waveform and the total number of three species are compared in all the cases to analyze the effects of the CF_(4)content on the discharge.The reduced electric field strength is also helpful in understanding the effects of CF_(4)content.When the CF_(4)content increases to 80%,the discharge is more intensive and the pulse frequency also increases.展开更多
目的:探讨恩替卡韦联合苦参素对HBe Ag阳性慢性乙型肝炎(chronic hepatitis B,CHB)患者Th1/Th2失平衡的影响。方法:将216例HBe Ag阳性CHB患者随机分为治疗组和对照组。治疗组112例给予恩替卡韦联合苦参素治疗,对照组104例给予恩替卡韦治...目的:探讨恩替卡韦联合苦参素对HBe Ag阳性慢性乙型肝炎(chronic hepatitis B,CHB)患者Th1/Th2失平衡的影响。方法:将216例HBe Ag阳性CHB患者随机分为治疗组和对照组。治疗组112例给予恩替卡韦联合苦参素治疗,对照组104例给予恩替卡韦治疗,疗程48周。治疗48周后,应用ELISA检测患者外周血Th1型细胞因子(IFN-γ、IL-2)和Th2型细胞因子(IL-4、IL-10)的表达水平,应用实时定量PCR检测患者外周血Th1细胞特征性转录因子(T-bet)和Th2细胞特征性转录因子(GATA3)mRNA的表达水平。结果:治疗48周后,治疗组IFN-γ、IL-2的表达水平较对照组明显升高[(68.32±9.67)pg/m L vs(35.24±7.49)pg/m L,(216.81±31.55)pg/m L vs(115.63±29.13)pg/m L;t1=27.96,t2=24.43;P1、P2均<0.01];而治疗组IL-4、IL-10的表达水平较对照组明显降低[(18.79±5.83)pg/m L vs(22.58±5.32)pg/m L,(133.75±29.21)pg/m L vs(143.17±32.96)pg/m L;t3=4.98,t4=2.23;P3<0.01,P4<0.05]。治疗组IFN-γ与IL-4比值IFN-γ/IL-4较对照组明显增大(3.59±0.76 vs 1.61±0.53,t=22.05,P<0.01)。治疗48周后,治疗组T-bet mRNA的表达水平较对照组明显升高(1.52±0.41 vs 0.83±0.29,t=14.18,P<0.01);而治疗组GATA3 mRNA的表达水平较对照组明显降低(0.96±0.24 vs 1.05±0.37,t=2.14,P<0.05)。治疗组T-bet mRNA与GATA3 mRNA比值T-bet/GATA3较对照组明显增大(1.60±0.39 vs 0.81±0.32,t=16.20,P<0.01)。结论:恩替卡韦联合苦参素可以促进HBe Ag阳性CHB患者Th1型细胞因子的分泌,抑制Th2型细胞因子的分泌,促使HBe Ag阳性CHB患者外周血Th细胞向Th1细胞分化,使其Th1/Th2失平衡得到改善。展开更多
基金financially supported by the National Key R&D Program of China (2022YFA1503400)the National Natural Science Foundation of China (21991091)+2 种基金the Key Projects of Shandong Key R&D plan (2019JZZY010506)Taishan Scholar Foundation (tspd20210308)the Petro China Research and Development Projects (2020A-1816 and 2020A-1817)。
文摘Objective: To develop a kind self active resistance movement training equipment for cervical spine, so as to restore the dynamic balance of the front and back muscle strength of the cervical spine in order to correct the abnormal physiological radian of the cervical spine, thereby relieving the clinical symptoms. Methods: The air spring with adjustable strength was used to provide the power of resistance active movement, and the neurological training cervical audio-visual synthesis training software was used to automatically guide patients to perform resistance active movement training of the cervical spine. Thirty two patients with cervical spondylosis were enrolled for treatment, and SPSS26 was used to statistically analyze the VAS, Lovett muscle strength, head and neck range of motion and C2-3 vertebral body curvature before and after the treatment. Result: There were significant differences in posterior cervical muscle strength (Lovett), dizziness, shoulder and neck pain (VAS) and C2-3 vertebral curvature before and after training in 32 patients (p˂0.001). Conclusion: The application of neurological training cervical vertebra self rehabilitation training instrument can effectively relieve clinical symptoms, restore head and neck range of motion, improve nape muscle strength, restore the dynamic balance of front and rear cervical muscle strength, and also can correct the abnormal physiological radian of the cervical vertebra.
文摘<div style="text-align:justify;"> In this paper, we report a single-mode Fabry-Pérot long wave infrared quantum cascade lasers based on the double phonon resonance active region design. For room temperature CW operation, the wafer with 35 stages was processed into buried heterostructure lasers. For a 4 mm long and 13 μm wide laser with high-reflectivity (HR) coating on the rear facet, continuous wave output power of 43 mW at 288 K and 5 mW at 303 K is obtained with threshold current densities of 2.17 and 2.7 kA/cm2. The lasing wavelength is around 10.5 μm. Single mode emission was observed for this particular device over the whole investigated current and temperature range. </div>
基金Natural Science Foundation of Shaanxi Provincial Department of Education(No.21JK0792)National Natural Science Foundation of China(No.51521065)+1 种基金National Key Basic Research Program of China(973 Program)(No.2015CB251001)the Natural Sciences and Engineering Research Council of Canada(NSERC).
文摘This paper presents the results of numerical investigation of the current pulses characteristics in SF_(6)/CF_(4)mixtures for the negative point-plane corona discharge.The pressure and the temperature of gas mixtures are 0.4 MPa and 300 K,respectively.The CF_(4)content varies from20%to 80%.The 2D axisymmetric geometry with point-plane electrodes is investigated,and the three drift-diffusion equations are solved to predict the characteristics of the negative corona discharge.In addition,Poisson’s equation is coupled with the above three continuity equations to calculate the electric field.In order to calculate the electron impact coefficients,including the Townsend ionization and attachment coefficients,as well as the mobilities and diffusion coefficients for electrons,the two-term Boltzmann equation is solved.The characteristics of three ionic species at five stages of the first current pulse in 60%SF_(6)-40%CF_(4)and20%SF_(6)-80%CF_(4)mixtures are selected to discuss the development mechanism of current pulses.Moreover,the reduced electric field strengths at the corresponding time instants are presented to help understand the discharge process.The current waveform and the total number of three species are compared in all the cases to analyze the effects of the CF_(4)content on the discharge.The reduced electric field strength is also helpful in understanding the effects of CF_(4)content.When the CF_(4)content increases to 80%,the discharge is more intensive and the pulse frequency also increases.
文摘目的:探讨恩替卡韦联合苦参素对HBe Ag阳性慢性乙型肝炎(chronic hepatitis B,CHB)患者Th1/Th2失平衡的影响。方法:将216例HBe Ag阳性CHB患者随机分为治疗组和对照组。治疗组112例给予恩替卡韦联合苦参素治疗,对照组104例给予恩替卡韦治疗,疗程48周。治疗48周后,应用ELISA检测患者外周血Th1型细胞因子(IFN-γ、IL-2)和Th2型细胞因子(IL-4、IL-10)的表达水平,应用实时定量PCR检测患者外周血Th1细胞特征性转录因子(T-bet)和Th2细胞特征性转录因子(GATA3)mRNA的表达水平。结果:治疗48周后,治疗组IFN-γ、IL-2的表达水平较对照组明显升高[(68.32±9.67)pg/m L vs(35.24±7.49)pg/m L,(216.81±31.55)pg/m L vs(115.63±29.13)pg/m L;t1=27.96,t2=24.43;P1、P2均<0.01];而治疗组IL-4、IL-10的表达水平较对照组明显降低[(18.79±5.83)pg/m L vs(22.58±5.32)pg/m L,(133.75±29.21)pg/m L vs(143.17±32.96)pg/m L;t3=4.98,t4=2.23;P3<0.01,P4<0.05]。治疗组IFN-γ与IL-4比值IFN-γ/IL-4较对照组明显增大(3.59±0.76 vs 1.61±0.53,t=22.05,P<0.01)。治疗48周后,治疗组T-bet mRNA的表达水平较对照组明显升高(1.52±0.41 vs 0.83±0.29,t=14.18,P<0.01);而治疗组GATA3 mRNA的表达水平较对照组明显降低(0.96±0.24 vs 1.05±0.37,t=2.14,P<0.05)。治疗组T-bet mRNA与GATA3 mRNA比值T-bet/GATA3较对照组明显增大(1.60±0.39 vs 0.81±0.32,t=16.20,P<0.01)。结论:恩替卡韦联合苦参素可以促进HBe Ag阳性CHB患者Th1型细胞因子的分泌,抑制Th2型细胞因子的分泌,促使HBe Ag阳性CHB患者外周血Th细胞向Th1细胞分化,使其Th1/Th2失平衡得到改善。
