Objectives: To explore the relationship between adiponectin (APN) and bone mineral density in this Zhuang ethnic group, thus providing a basis underpinning the prevention and treatment of osteoporosis (OP). Methods: Z...Objectives: To explore the relationship between adiponectin (APN) and bone mineral density in this Zhuang ethnic group, thus providing a basis underpinning the prevention and treatment of osteoporosis (OP). Methods: Zhuang women over 50 years old in Guangxi Zhuang Autonomous Region were included in the study. The broadband ultrasound attenuation (BUA) was adopted as the reference to calculate the T value. Quantitative ultrasonic bone density was measured on the right. Body composition measuring instrument was used to measure weight, fat, and muscle mass. Plasma APN level was detected by ELISA and blood lipids were detected by enzymatic method. Results: Plasma APN level was found with significant differences in the normal bone mineral density group, bone mineral density reduction group, and osteoporosis group (P β = −0.176, P = 0.001) when the partial correlation coefficient of APN is −0.210. Elevated APN was an independent risk factor for bone mineral density reduction (OR = 1.191, 95%CI: 1.004 - 1.407, P = 0.04) and OP (OR = 1.1337, 95%CI: 1.137 - 1.572, P Conclusion: Increased APN in postmenopausal women of Zhuang is an independent risk factor for OP. The application of APN in the OP screening and prevention of middle-aged and ageing Zhuang women still needs further research.展开更多
Two-dimensional van der Waals magnetic materials have demonstrated great potential for new-generation high-performance and versatile spintronic devices.Among them,magnetic tunnel junctions(MTJs)based on A-type antifer...Two-dimensional van der Waals magnetic materials have demonstrated great potential for new-generation high-performance and versatile spintronic devices.Among them,magnetic tunnel junctions(MTJs)based on A-type antiferromagnets,such as CrI_(3),possess record-high tunneling magnetoresistance(TMR)because of the spin filter effect of each insulating unit ferromagnetic layer.However,the relatively low working temperature and the instability of the chromium halides hinder applications of this system.Using a different technical scheme,we fabricated the MTJs based on an air-stable A-type antiferromagnet,CrSBr,and observed a giant TMR of up to 47000%at 5 K.Meanwhile,because of a relatively high Néel temperature of CrSBr,a sizable TMR of about 50%was observed at 130 K,which makes a big step towards spintronic devices at room temperature.Our results reveal the potential of realizing magnetic information storage in CrSBr-based spin-filter MTJs.展开更多
Objective: To explore the correlation between muscle strength, muscle mass and bone mineral density (BMD) in Zhuang female population, body composition analysis and grip strength, and to analyze the possible influenci...Objective: To explore the correlation between muscle strength, muscle mass and bone mineral density (BMD) in Zhuang female population, body composition analysis and grip strength, and to analyze the possible influencing factors of BMD. Methods: 182 postmenopausal women were selected from Guangxi Province of China. Broadband ultrasound attenuation (BUA) was used to evaluate BMD. Grip dynamometer to assess muscle strength. Height, weight and muscle mass of each part were measured by body composition measuring instrument. Body mass index (BMI), skeletal muscle mass index (SMI) and limb skeletal muscle mass (SM) were calculated according to the measurement results. Results: BUA, grip strength and SMI in postmenopausal women of Zhuang nationality showed a decreasing trend with age (p p p r = 0.305, p Conclusion: With the increase of age, the decline rate of muscle strength of postmenopausal Zhuang women in Guangxi is slower than that of BMD and muscle mass. SM can better reflect the BMD level of the body than SMI, and the LSM is the main influencing factor of BMD.展开更多
文摘Objectives: To explore the relationship between adiponectin (APN) and bone mineral density in this Zhuang ethnic group, thus providing a basis underpinning the prevention and treatment of osteoporosis (OP). Methods: Zhuang women over 50 years old in Guangxi Zhuang Autonomous Region were included in the study. The broadband ultrasound attenuation (BUA) was adopted as the reference to calculate the T value. Quantitative ultrasonic bone density was measured on the right. Body composition measuring instrument was used to measure weight, fat, and muscle mass. Plasma APN level was detected by ELISA and blood lipids were detected by enzymatic method. Results: Plasma APN level was found with significant differences in the normal bone mineral density group, bone mineral density reduction group, and osteoporosis group (P β = −0.176, P = 0.001) when the partial correlation coefficient of APN is −0.210. Elevated APN was an independent risk factor for bone mineral density reduction (OR = 1.191, 95%CI: 1.004 - 1.407, P = 0.04) and OP (OR = 1.1337, 95%CI: 1.137 - 1.572, P Conclusion: Increased APN in postmenopausal women of Zhuang is an independent risk factor for OP. The application of APN in the OP screening and prevention of middle-aged and ageing Zhuang women still needs further research.
基金the National Key Research and Development Program of China(Grant No.2021YFB3601300)the National Natural Science Foundation of China(Grants Nos.52161160334,52271237,12274437,12134017,and 12174426)+2 种基金the Science Center of the National Science Foundation of China(Grant No.52088101)the Beijing Natural Science Foundation(Grant No.Z190009)the K.C.Wong Education Foundation(Grant No.GJTD2019-14)。
文摘Two-dimensional van der Waals magnetic materials have demonstrated great potential for new-generation high-performance and versatile spintronic devices.Among them,magnetic tunnel junctions(MTJs)based on A-type antiferromagnets,such as CrI_(3),possess record-high tunneling magnetoresistance(TMR)because of the spin filter effect of each insulating unit ferromagnetic layer.However,the relatively low working temperature and the instability of the chromium halides hinder applications of this system.Using a different technical scheme,we fabricated the MTJs based on an air-stable A-type antiferromagnet,CrSBr,and observed a giant TMR of up to 47000%at 5 K.Meanwhile,because of a relatively high Néel temperature of CrSBr,a sizable TMR of about 50%was observed at 130 K,which makes a big step towards spintronic devices at room temperature.Our results reveal the potential of realizing magnetic information storage in CrSBr-based spin-filter MTJs.
文摘Objective: To explore the correlation between muscle strength, muscle mass and bone mineral density (BMD) in Zhuang female population, body composition analysis and grip strength, and to analyze the possible influencing factors of BMD. Methods: 182 postmenopausal women were selected from Guangxi Province of China. Broadband ultrasound attenuation (BUA) was used to evaluate BMD. Grip dynamometer to assess muscle strength. Height, weight and muscle mass of each part were measured by body composition measuring instrument. Body mass index (BMI), skeletal muscle mass index (SMI) and limb skeletal muscle mass (SM) were calculated according to the measurement results. Results: BUA, grip strength and SMI in postmenopausal women of Zhuang nationality showed a decreasing trend with age (p p p r = 0.305, p Conclusion: With the increase of age, the decline rate of muscle strength of postmenopausal Zhuang women in Guangxi is slower than that of BMD and muscle mass. SM can better reflect the BMD level of the body than SMI, and the LSM is the main influencing factor of BMD.
