The stress-strain curves of confined concrete were obtained based on tests of seven cross-shaped columns confined by stirrups under axial load. The experiment results showed that the strength and deformation of confin...The stress-strain curves of confined concrete were obtained based on tests of seven cross-shaped columns confined by stirrups under axial load. The experiment results showed that the strength and deformation of confined concrete can be enhanced effectively by stirrups for cross-shaped columns. Compared with the non-confined concrete, when the stirrup characteristic value is in the range of 0.046-0.230, the confined concrete compressive strengths has an increase of 8%-43%, and the strain corresponding to the peak stress of confined concrete has an increase of 25%-195%. According to the test results, the effects of stirrup characteristic and stirrup spacing on the compressive strength and strain of confined concrete were analysed. It is shown that the compressive strength of confined concrete has a linear relationship with the product of stirrup characteristic value and stirrup effective restraint coefficient, and the strain corresponding to the peak stress of confined concrete has a nonlinear relationship with the product of stirrup characteristic value and stirrup effective restraint coefficient. The stress-strain curve equation of confined concrete was proposed for cross-shaped columns, and the calculated curves are in good agreement with the experimental curves.展开更多
Objective:Objective:To observe the therapeutic effect of cross-shaped moxibustion on the conception vessel and belt vessel for dysmenorrhea due to qi and blood deficiency.Methods:Taking Shenque(神阙CV8)as the center,u...Objective:Objective:To observe the therapeutic effect of cross-shaped moxibustion on the conception vessel and belt vessel for dysmenorrhea due to qi and blood deficiency.Methods:Taking Shenque(神阙CV8)as the center,up to Zhongwan(中脘CV12),down to Zhongji(中极CV3),and both sides to Daimai(带脉GB26),the above mentioned were treated area.The patient’s umbilicus was filled with the herbal powder for moxibustion and the powder was also scattered in a straight line along the treated area.The two sheets of mulberry paper were put in a cross way on the herbal powder for moxibustion,and the cross-shaped moxibustion box was put on the paper.The ginger paste was put into the box to a height of 3 cm and pressed tightly with a tongue depressor,the margin of the ginger paste should be clinged to the moxibustion box.The moxa cones were put end to end in the groove on the median of the ginger paste and ignited orderly.When the cones were burnt completely,the new cones were used and ignited.Three cones were adopted in succession in each treatment.The treatment was given once a week,and three treatments as one course,the therapeutic effect was evaluated after two courses of treatment.Results:There were 16 cases cured,5 cases effective and 2 cases non-effective in all.The total effective rate was 91.3%.Conclusion:Coss-shaped moxibustion on the conception vessel and belt vessel has sound effect for dysmenorrhea due to qi and blood deficiency.展开更多
Objective:To explore the effect of Qi cross-shaped moxibustion on the recovery of gastrointestinal function in elderly hip fracture patients after surgery.Methods:62 elderly hip fracture surgery patients were selected...Objective:To explore the effect of Qi cross-shaped moxibustion on the recovery of gastrointestinal function in elderly hip fracture patients after surgery.Methods:62 elderly hip fracture surgery patients were selected as the base analysis sample,enrolled in January 2023-May 2024,and divided into an observation group(n=31)and a control group(n=31)using the digital table random draw scheme.The patients in the control group underwent conventional dietary intervention,and the patients in the observation group underwent Qi cross-shaped moxibustion intervention,comparing the gastrointestinal function recovery time and quality of life scores(PAC-QOL)of patients with constipation between the two groups.Results:The gastrointestinal function recovery time of the observation group was lower than that of the control group(P<0.05);the PAC-QOL score of the observation group was lower than that of the control group after the intervention(P<0.05).Conclusion:Qi cross-shaped moxibustion can shorten the recovery time of gastrointestinal function and improve the quality of life of elderly hip fracture patients after surgery,and it has the value of promotion and application.展开更多
A phillipsite as one of oceanic authigenic zeolites gradually forms from alteration of volcanic glass under low temperature and pressure. In this paper physical property and chemical and mineralogical compositions ofs...A phillipsite as one of oceanic authigenic zeolites gradually forms from alteration of volcanic glass under low temperature and pressure. In this paper physical property and chemical and mineralogical compositions ofsome zeolite grains collected from the study area in the North Pacific Ocean are first comprehensively studied, andthey are defined as phillipsite. Then, statistics of grain percentage of the phillipsite widely-distributed at 35 sitesin the study area in the deep-sea sediments were made ; it has been found that they mainly occur in the two sediments: red clay and calcareous ooze, and are rich in the former. Finally, the authors preliminarily discuss the formation process of the phillipsite on the basis of this study results, together with the view points of predecessors.展开更多
A compact patch antenna is designed, which is with structures of cross-shape slot, Complementary Split Ring Resonator(CSRR), and loaded transmission line. To implement the compactness in size, these structures are etc...A compact patch antenna is designed, which is with structures of cross-shape slot, Complementary Split Ring Resonator(CSRR), and loaded transmission line. To implement the compactness in size, these structures are etched on the ground plane, then the input impedance has been improved. The CSRR is employed to improve impedance matching between the source and radiation patch, and the cross-shape slot on the radiation patch is utilized to increase the bandwidth. The design is validated by comparison of realistic field simulation with measurement results of an antenna prototype. The presented antenna is much smaller in size than conventional antennas with CSRR, showing good performances at the resonant frequency. The experimental results accord well with simulated results.展开更多
基金Supported by National Natural Science Foundation of China (No. 50878141)
文摘The stress-strain curves of confined concrete were obtained based on tests of seven cross-shaped columns confined by stirrups under axial load. The experiment results showed that the strength and deformation of confined concrete can be enhanced effectively by stirrups for cross-shaped columns. Compared with the non-confined concrete, when the stirrup characteristic value is in the range of 0.046-0.230, the confined concrete compressive strengths has an increase of 8%-43%, and the strain corresponding to the peak stress of confined concrete has an increase of 25%-195%. According to the test results, the effects of stirrup characteristic and stirrup spacing on the compressive strength and strain of confined concrete were analysed. It is shown that the compressive strength of confined concrete has a linear relationship with the product of stirrup characteristic value and stirrup effective restraint coefficient, and the strain corresponding to the peak stress of confined concrete has a nonlinear relationship with the product of stirrup characteristic value and stirrup effective restraint coefficient. The stress-strain curve equation of confined concrete was proposed for cross-shaped columns, and the calculated curves are in good agreement with the experimental curves.
文摘Objective:Objective:To observe the therapeutic effect of cross-shaped moxibustion on the conception vessel and belt vessel for dysmenorrhea due to qi and blood deficiency.Methods:Taking Shenque(神阙CV8)as the center,up to Zhongwan(中脘CV12),down to Zhongji(中极CV3),and both sides to Daimai(带脉GB26),the above mentioned were treated area.The patient’s umbilicus was filled with the herbal powder for moxibustion and the powder was also scattered in a straight line along the treated area.The two sheets of mulberry paper were put in a cross way on the herbal powder for moxibustion,and the cross-shaped moxibustion box was put on the paper.The ginger paste was put into the box to a height of 3 cm and pressed tightly with a tongue depressor,the margin of the ginger paste should be clinged to the moxibustion box.The moxa cones were put end to end in the groove on the median of the ginger paste and ignited orderly.When the cones were burnt completely,the new cones were used and ignited.Three cones were adopted in succession in each treatment.The treatment was given once a week,and three treatments as one course,the therapeutic effect was evaluated after two courses of treatment.Results:There were 16 cases cured,5 cases effective and 2 cases non-effective in all.The total effective rate was 91.3%.Conclusion:Coss-shaped moxibustion on the conception vessel and belt vessel has sound effect for dysmenorrhea due to qi and blood deficiency.
文摘Objective:To explore the effect of Qi cross-shaped moxibustion on the recovery of gastrointestinal function in elderly hip fracture patients after surgery.Methods:62 elderly hip fracture surgery patients were selected as the base analysis sample,enrolled in January 2023-May 2024,and divided into an observation group(n=31)and a control group(n=31)using the digital table random draw scheme.The patients in the control group underwent conventional dietary intervention,and the patients in the observation group underwent Qi cross-shaped moxibustion intervention,comparing the gastrointestinal function recovery time and quality of life scores(PAC-QOL)of patients with constipation between the two groups.Results:The gastrointestinal function recovery time of the observation group was lower than that of the control group(P<0.05);the PAC-QOL score of the observation group was lower than that of the control group after the intervention(P<0.05).Conclusion:Qi cross-shaped moxibustion can shorten the recovery time of gastrointestinal function and improve the quality of life of elderly hip fracture patients after surgery,and it has the value of promotion and application.
文摘A phillipsite as one of oceanic authigenic zeolites gradually forms from alteration of volcanic glass under low temperature and pressure. In this paper physical property and chemical and mineralogical compositions ofsome zeolite grains collected from the study area in the North Pacific Ocean are first comprehensively studied, andthey are defined as phillipsite. Then, statistics of grain percentage of the phillipsite widely-distributed at 35 sitesin the study area in the deep-sea sediments were made ; it has been found that they mainly occur in the two sediments: red clay and calcareous ooze, and are rich in the former. Finally, the authors preliminarily discuss the formation process of the phillipsite on the basis of this study results, together with the view points of predecessors.
基金Hebei Provincial Education Department Youth Fund(QN2017114)。
文摘A compact patch antenna is designed, which is with structures of cross-shape slot, Complementary Split Ring Resonator(CSRR), and loaded transmission line. To implement the compactness in size, these structures are etched on the ground plane, then the input impedance has been improved. The CSRR is employed to improve impedance matching between the source and radiation patch, and the cross-shape slot on the radiation patch is utilized to increase the bandwidth. The design is validated by comparison of realistic field simulation with measurement results of an antenna prototype. The presented antenna is much smaller in size than conventional antennas with CSRR, showing good performances at the resonant frequency. The experimental results accord well with simulated results.
