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低强度抗阻结合血流限制训练12周青年人体成分、肌肉力量及动脉弹性功能

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中国组织工程研究 2025年第12期29卷 2521-2527页

作者：贾月新田赛赛祁晓红张素芹江苏卫生健康职业学院江苏省南京市210000

背景:高强度抗阻训练能有效提高肌肉力量,但动脉硬化风险较高;高强度抗阻训练结合有氧运动可有效降低动脉硬化水平;低强度抗阻结合血流限制训练不需要高负荷力量刺激肌肉,或许是提高肌肉力量、保持动脉弹性的科学训练方法。目的:探讨12... 详细信息

背景:高强度抗阻训练能有效提高肌肉力量,但动脉硬化风险较高;高强度抗阻训练结合有氧运动可有效降低动脉硬化水平;低强度抗阻结合血流限制训练不需要高负荷力量刺激肌肉,或许是提高肌肉力量、保持动脉弹性的科学训练方法。目的:探讨12周的低强度抗阻训练结合血流限制训练对青年人体成分、肌肉力量及动脉弹性功能的影响,为制定个性化训练方案提供理论支撑。方法:随机招募55名大学生并通过抽签的方式随机分为高强度抗阻训练组、高强度抗阻结合有氧运动组及低强度抗阻结合血流限制训练组,分别进行为期12周的高强度抗阻训练、高强度抗阻训练结合有氧运动、低强度抗阻训练结合血流限制训练,训练结束后进行身体成分、肌肉力量及动脉弹性功能测试。结果与结论:12周的训练干预后,高强度抗阻训练组、低强度抗阻结合血流限制训练组的瘦体质量显著增加(P<0.05),3组的最大重复次数(1RM)和膝关节等速肌力均显著增加(P<0.05),高强度抗阻结合有氧运动组、低强度抗阻结合血流限制训练组的动脉弹性功能显著改善(P<0.05)。结果表明:12周的高强度抗阻训练、低强度抗阻训练结合血流限制训练能显著改善身体成分;3种训练方式均能增加肌肉力量;12周的高强度抗阻训练结合有氧运动、低强度抗阻训练结合血流限制训练均能改善动脉弹性功能,且低强度抗阻训练结合血流限制训练的效果优于高强度抗阻训练结合有氧运动。因此,建议将低强度抗阻训练结合血流限制训练作为首选训练方式,以改善动脉弹性,降低动脉硬化的风险。

关键词：高强度抗阻训练有氧运动血流限制训练体成分肌肉力量动脉弹性功能

Occupancy of rooms in urban residential buildings by users in cold areas of China

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Building Simulation 2023年第3期16卷 483-497页

作者： qi dong Zikai Ma Cheng Sun School of Architecture Harbin Institute of TechnologyHarbin 150006China Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology Ministry of Industry and Information TechnologyHarbin 150006China

Occupancy is used to represent the movements and locations of users among various zones of buildings,and it is the basis of all other daily energy consumption *** study investigated eight families in cold areas of China based on occupancy measurements obtained in four main rooms,i.e.,living room,bedroom,kitchen,and *** particular,we analyzed the duration of user occupancy and hourly mean occupancy,and characterized their regular and random *** to the results,we developed an event-based occupancy model using an inhomogeneous Markov chain,where the rooms were modeled and daily events were divided into three categories according to their *** established a new method for conversion between event characteristic parameters and a transition probability matrix,as well as an overlap avoidance method for active *** model was then validated using real *** results showed that the model performed well in terms of two evaluation *** model should improve the accuracy of simulations of occupancy.

关键词： event occupancy urban residential building simulation cold areas of China

α-Glucosidase Inhibitory Activities of Lutein and Zeaxanthin Purified from Green Alga Chlorella ellipsoidea

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Journal of Ocean University of China 2018年第4期17卷 983-989页

作者： qi jia KIM Sang Moo CAS Key Laboratory of Microbial Physiological and Metabolic Engineering Institute of MicrobiologyChinese Academy of Sciences Department of Marine Food Science and Technology Gangneung-Wonju National University

α-Glucosidase inhibitors are used therapeutically to treat type-2 diabetes mellitus. Through a bioassay-guided fractionation technique, three carotenoids,(all-E)-lutein,(all-E)-zeaxanthin and(9-Z)-zeaxanthin, were purified from the green alga Chlorella ellipsoidea, in which(all-E)-lutein and(9-Z)-zeaxanthin had potent α-glucosidase inhibitory activity. IC_(50) values of(all-E)-lutein and(9-Z)-zeaxanthin were 70 and 53.5 μmol L^(-1) against Saccharomyces cerevisiae α-glucosidase, respectively, with non-competitive inhibition. In addition, IC_(50) values of(9-Z)-zeaxanthin against Bacillus stearothermophilus and rat-intestinal α-glucosidase were 805.1 and 671.2 μmol L^(-1), respectively. The K_i values of(all-E)-lutein and(9-Z)-zeaxanthin against S. cerevisiae α-glucosidase were 78.1 and 16.5 μmol L^(-1), respectively. Therefore, C. ellipsoidea carotenoids might be utilized as a novel candidate to prevent type-2 diabetes mellitus related disorders in food and medical industry.

关键词： type-2 diabetes mellitus α-glucosidase inhibitor carotenoids Chlorella ellipsoidea

The Nonlinear Singularly Perturbed Nonlocal Reaction Diffusion Systems

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Acta Mathematicae Applicatae Sinica 2008年第4期24卷 553-562页

作者： jia-qi Mo Xiu Chen Department of Mathematics Anhui Normal University Wuhu 241000 China Department of Mathematics and Physics Hefei University Hefei 230601 China

In this paper the singularly perturbed initial boundary value problems for a nonlocal reaction diffusion system are considered. Using the iteration method and the comparison theorem, the existence and asymptotic behav... 详细信息

关键词： Reaction diffusion system singular perturbation initial boundary value problem

Design of a 20-Gsps 12-bit time-interleaved analog-to-digital conversion system

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Nuclear Science and Techniques 2021年第3期32卷 30-40页

作者： Ruo-Shi dong Lei Zhao jia-Jun qin Wen-Tao Zhong Yi-Chun Fan Shu-Bin Liu qi An State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China

The time-interleaved analog-to-digital conversion(TIADC)technique is an effective method for increasing the sampling rate in a waveform digitization *** this study,a 20-Gsps TIADC system was designed.A wide-bandwidth performance was achieved by optimizing the analog circuits,and a sufficient effective number of bits(ENOB)performance guaranteed using the perfect reconstruction algorithm for mismatch error *** proposed system was verified by tests,and the results indicated that a-3 dB bandwidth of 6 GHz and the ENOB performance of 8.7 bits at 1 GHz and 7.6 bits at6 GHz were successfully achieved.

关键词： Time-interleaved technique High-speed A/D conversion High bandwidth Mismatch error correction

Numerical studies on issues of Re-independence for indoor airflow and pollutant dispersion within an isolated building

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Building Simulation 2022年第7期15卷 1259-1276页

作者： Peng-Yi Cui Wei-qiu Chen jia-qi Wang Jin-Hao Zhang Yuan-dong Huang Wen-Quan Tao College of Environment and Architecture University of Shanghai for Science and TechnologyShanghaiChina Key Laboratory of Thermo-Fluid Science and Engineering of MOE School of Energy and Power EngineeringXi'an Jiaotong UniversityXi’anChina

This study conducted the numerical models validated by wind-tunnel experiments to investigate the issues of Re-independence of indoor airflow and pollutant dispersion within an isolated *** window Reynolds number(Re_(w))was specified to characterize the indoor flow and *** indicators of RRC(ratio of relative change)or DR(K_DR)(difference ratio of dimensionless concentration)<5%were applied to quantitatively determine the critical Rew for indoor flow and turbulent *** results show that the critical Re(Re_(crit)) value is position-dependent,and Re_(crit) at the most unfavorable position should be suggested as the optimal value within the whole areas of *** Re(H,orit)=27,000 is recommended for the outdoor flows;while Re_(w,crit)=15,000 is determined for the indoor flows due to the lower part below the window showing the most *** suggested Re_(w,crit)(=15,000)for indoor airflow and cross ventilation is independence of the window ***,taking K_DR≤5% as the indicator,the suggested Re_(w,crit) for ensuring indoor pollutant diffusion enter the independence regime should also be 15,000,indicating that indoor passive diffusion is completely determined by the flow *** contours of dimensionless velocity(U/U_(0))and concentration(K)against the increasing Re(w) further confirmed this critical *** study further reveals the Re-independence issues for indoor flow and dispersion to ensure the reliability of the data obtained by reduced-scale numerical or wind-tunnel models.

关键词： CFD simulation Re-independence similarity criterion indoor ventilation pollutant dispersion

Challenges in Treatment of Primary Sjogren’s Syndrome and Opportunities for Chinese Medicine

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Chinese Journal of Integrative Medicine 2020年第7期26卷 483-485页

作者： HOU jia-qi XUE Luan Department of Rheumatology and Immunology Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghai(200437)China

Primary Sjogren’s syndrome is a chronic autoimmune disease that can lead to systemic *** present,immunomodulatory agents have not shown good efocacy,many patients in China seek Chinese medicine *** medicine can comprehensively improve the symptoms of patients through Chinese pattern diagnosis and individualized *** researches are providing scientioc bases for the therapeutic effect of Chinese *** Chinese medicine treatment can be integrated into the conventional management of primary Sjogren’s syndrome.

关键词： primary Sjogren's syndrome immunomodulatory agents Chinese medicine

Co-orbital transition of 2016 HO_(3)

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Astrodynamics 2023年第1期7卷 3-14页

作者： Yi qi dong qiao School of Aerospace Engineering Beijing Institute of Technology5 South Zhongguancun StreetBeijing 100081China

In this paper,we investigate the orbital behavior of the transition between the quasisatellite(QS)and horseshoe(HS)motions of 2016 *** on the phase space structure in the Sun-Earth circular restricted three-body problem,we find that the surface of 2016 HO in the torus space is a compound surface formed by QS and HS *** co-orbital motion is therefore a QS-HS transition.2016 HO3 is currently located in a QS state,and its locus clings to the QS portion in the isosurface in agreement with the semi-analytical *** provide a criterion to separate the QS and HS stages in the transition and obtain accurate incoming and outgoing epochs of the QS *** then propose an approximate curve to describe the locus of 2016 HO3 in the w-e *** asteroids(VAs)near 2016 HO in the isosurface were created to study the infuence of the initial state of the QS-HS *** find that the duration of the QS state is mainly influenced by the loci in the w-e *** VAs with large QS durations usually have longer loci across the QS region than those with shorter *** addition,although some VAs are close to 2016 HO3 in the w-e projection,their co-orbital behaviors are significantly different from that of the *** indicates that the QS-HS transition of 2016 HO3 is sensitive to the(w,e)position.

关键词： Asteroid 469219 Kamo'oalewa(2016 HO_(3)) co-orbital motion transition torus space semi-analytical method

Aggregation structures of organic conjugated molecules on their optoelectronic properties

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Chinese Chemical Letters 2016年第8期27卷 1350-1356,1469页

作者： jia-dong Zhou Wen-qiang Zhang Lin-Lin Liu Zeng-qi Xie Yu-Guang Ma Institute of Polymer Optoelectronic Materials & Devices State Key Laboratory of Luminescent Materials & DevicesSouth China University of Technology

The intimate connection between stacking modes and optoelectronic properties of organic conjugated materials has been discussed from the viewpoints of developing microscopic models and further understanding of their functions and potential *** particular,three basal dimer configurations（cofacial configuration,staggered configuration,and crossed configuration） and their respective optical（including radiative and non-radiative） and electrical properties are expatiated in ***,we put forward the perspective on achieving the promising laser material that features high fluorescence quantum yield and charge mobility.

关键词： Fluorescence efficiency Mobility Aggregation Transition dipole