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【目的】探讨旋转恒定磁场(RPMF)治疗激素性股骨头坏死的疗效和病理机理。【方法】制备新西兰兔股骨头坏死动物模型,予旋转恒定磁场(铋铁硼永磁体以8Hz频率旋转、形成其上方20cm直径60cm的半球形磁场、表面强度在0.32～0.60T之间)处理4周和8周(A1、A2组),使用组织切片和X线片以及显微CT观察股骨头内部结构变化,同时监测其血液黏稠度、胆固醇、甘油三酯以及髋关节腔压力等的变化,和相应阳性假处理4周、8周组(B1组\B2组)、空白对照(C组)进行统计学分析和比较。【结果】经旋转恒定磁场(RPMF)处理后,动物模型的股骨头骨小梁形态结构显著改善,尤以显微CT表现明显,髋关节腔压力、血液流变学及血脂检测值改善具有显著统计学意义(PEta2A*B>Eta2B)。【结论】磁场可以针对股骨头坏死主要环节高脂血症、血液黏稠度增加、关节腔压力增高等发挥调节作用,有效治疗激素性股骨头坏死,尤其是早期病变;显微CT在诊断激素性股骨头坏死方面具有灵敏性和直观的优越性。

Copyright of World Nuclear Geoscience is the property of World Nuclear Geoscience Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

It was analyzed that the landscape style of Lanpu as the first batch of historical gardens in Guangzhou by this paper, and its Lingnan gardening art features are particularly distinctive, which are mainly reflected in the gardening elements are rich and varied: Lanpu has a total of 15 existing featured buildings, including pavilions, boats, corridors, pavilions, and other buildings of 5 types; the rockery has 4 types of rockeries: water view rockeries, swimmable rockeries, ornamental rockeries, and molded stone rockeries; Lanpu’ s garden paths are mainly covered by stone materials (green slate, granite, pebbles), brick materials (concrete bricks, burnt bricks), and embedded grass pavement of 3 types; the plant landscape has 4 levels, with remarkable tropical flavor. Flexible and dynamic spatial layout: the continuity and coherence of the separated spaces form the spatial sequence of “starting, bearing, turning and closing” and the sparse, dense and appropriate spatial pattern. Exquisite and delicate gardening techniques: according to the landscape characteristics of the area, the traditional gardening techniques of framing, pairing, borrowing and sandwiching are skillfully applied. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Beijing University of Technology is the property of Journal of Beijing University of Technology, Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Rock & Mineral Analysis is the property of Editorial Board of Rock & Mineral Analysis and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Psychological Science is the property of Psychological Science Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Chinese Journal of Oncology Prevention & Treatment is the property of Editorial Department of Chinese Journal of Oncology Prevention & Treatment and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Journal of Clinical Nursing in Practice is the property of Journal of Clinical Nursing in Practice (Editorial Board, Shanghai Jiao Tong University Press) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Progress in Modern Biomedicine is the property of Publishing House of Progress in Modern Biomedicine and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

目的 探究主动脉夹层(AD)患者术后血压波动性及其相关影响因素。方法 选取2021年4 月至2022年6月该院收治的82例 AD 手术患者, 采用心电监护仪监测患者住院期间的每小时血压情况, 以患 者住院期间的收缩压标准差评估其血压波动性, 并收集相关资料, 分析 AD 患者术后血压波动性及其相关影响 因素。结果 82例 AD手术患者的收缩压波动性为(11.73±1.18)mm Hg(1mm Hg=0.133kPa), 血压波动 性较高。性别、年龄、饮酒史、吸烟史、入院首诊收缩压与 AD 患者术后血压波动性有关(P<0.05); 体重指数、 夹层分型、血压测量频次、血压持续测量时间与 AD患者术后血压波动性无关(P>0.05)。经线性回归分析显 示, 女性、年龄大于60岁、有饮酒史、吸烟史、入院首诊收缩压大于或等于140mm Hg是 AD 患者术后血压波 动性较高的危险因素(P<0.05)。结论 AD 患者术后血压波动性较高, 这与患者为女性, 高龄, 有饮酒史、吸 烟史, 入院首诊收缩压较高等因素有关, 临床可据此采取措施来降低患者术后血压波动性。 [ABSTRACT FROM AUTHOR]

Copyright of Lubrication Engineering (0254-0150) is the property of Editorial Office of LUBRICATION ENGINEERING and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Shanghai Jiao Tong University (1006-2467) is the property of Journal of Shanghai Jiao Tong University Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Southwest China Journal of Agricultural Sciences is the property of Editorial Department of Southwest China Journal of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Hydrogeology & Engineering Geology / Shuiwendizhi Gongchengdizhi is the property of Hydrogeology & Engineering Geology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Progress in Modern Biomedicine is the property of Publishing House of Progress in Modern Biomedicine and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Cancer Biotherapy is the property of Editorial Office of Chinese Journal of Cancer Biotherapy and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Mechanical & Electronic Control Engineering is the property of Omniscient Pte. Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Clinical Nursing in Practice is the property of Journal of Clinical Nursing in Practice (Editorial Board, Shanghai Jiao Tong University Press) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To investigate the effects and mechanism of Schizandrin B (SchB) on the proliferation and osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs) under high glucose (HG) conditions. Methods Rat BMSCs were isolated and screened for experimental concentrations of SchB. BMSCs were divided into normal (NC) group, high glucose (HG) group, HG+l0 µmol/L SchB group, HG+20 µmol/L SchB group, HG +40 µmol/L SchB group, and HG+40 µmol/L SchB + AMPK inhibitor Compound C (CC) group. Cell viability was detected with CCK-8 method. Alkaline phosphatase (ALP) activity assay and Alizarin red staining were performed to evaluate the osteogenic differentiation ability of BMSCs. qRT-PCR was used to detect the expression of osteogenic differentiation-related genes (RUNX2, CO11a1, OCN, BMP2) in BMSCs. The number of autophagosomes was observed with transmission electron microscopy (TEM). Western blotting was used to detect the expression of autophagy (LC3A/B, Beclin-1, P62) and AMPK/mTOR signaling pathway-related proteins. Results HG environment inhibited the proliferation and osteogenic differentiation of BMSCs, reduced the number of autophagosomes, Beclin-1 protein level and LC3II/LC3I, p-AMPK/ AMPK ratio, increased P62 protein level and p-mTOR/mTOR ratio (all P< 0.05), and inhibited autophagy mediated by AMPK/mTOR pathway. SchB promoted the proliferation and osteogenic differentiation of BMSCs under HG condition, increased the number of autophagosomes, Beclin-1 protein level and LC3II/LC3I, p-AMPK/ AMPK ratio, decreased P62 protein level and p-mTOR/mTOR ratio (all P<0.05), and activated AMPK/mTOR pathway-mediated autophagy. CC blocked the promoting effects of SchB on BMSCs proliferation, osteogenic differentiation, and autophagy under HG condition. Conclusion SchB may promote the proliferation and osteogenic differentiation of BMSCs under HG condition by activating AMPK/mTORmediated autophagy. [ABSTRACT FROM AUTHOR]

Copyright of World Regional Studies is the property of World Regional Studies Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Lubrication Engineering (0254-0150) is the property of Editorial Office of LUBRICATION ENGINEERING and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Geological Hazard & Control is the property of China Institute of Geological Environmental Monitoring (CIGEM) Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Journal of Test & Measurement Technology is the property of Publishing Center of North University of China and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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For a class of degenerate wave equation model in the moving boundary domain, the finite difference method is used to discretize it. The second-order central difference formula is used for the numerical discretization form in the time direction, the second-order central difference formula and the fourth-order difference scheme obtained by the undetermined coefficient method are used for the numerical discretization scheme in the space direction. The Taylor expansion formula is used to give the numerical calculation process at the first time layer and the fixed boundary. If the numerical discretization form in the spatial direction is the second-order central difference formula, the triangular grid and the corresponding numerical discretization form are used to deal with the moving boundary. If the numerical discretization scheme in the spatial direction is the fourth-order difference formula, the corresponding numerical discretization scheme are used to deal with the moving boundary. The numerical experimental results verify the effectiveness of the two numerical schemes in solving such problems, and the spatial fourth-order accuracy difference scheme is more accurate than the spatial second-order accuracy difference scheme. [ABSTRACT FROM AUTHOR]

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Copyright of Journal of Clinical Nursing in Practice is the property of Journal of Clinical Nursing in Practice (Editorial Board, Shanghai Jiao Tong University Press) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Keteleeria calcarea is a precious tree species in the mid-subtropical karst area, this species has a narrow distribution range and very few seedlings in wild populations, which severely limits the natural renewal of the population. In order to explore the causes for the endangerment of this species and provide reference for its protection and utilization, the cones and seeds morphological characteristics of K. calcarea were measured, and the effects of temperatures, light conditions, soil water contents, substrates, storage temperatures and time, and different geographical provenances on seed germination were studied. The results were as follows: (1) The average seed setting rate of K. calcarea cone was 7.45%±6.54%, the seed wing length was (2.27±0.32) cm, the average seed length was (1.55±0.15) cm (excluding seed wing), the average width was (0.62±0.05) cm, the average thickness was (0.46±0.04) cm, and the average 1 000-seed weight was (214.81±14.76) g, the average water content of dried seeds was 15.28%±1.66%. (2) The optimum temperature for seed germination was 25 ℃, and the germination rate decreased significantly at 20 ℃ and 30 ℃(P<0.05); Seed germination did not need light, but the germination rate under periodic light was significantly higher than that under continuous light and continuous darkness (P<0.05); The seeds could germinate under the conditions of 10%-30% soil water contents, and could withstand a certain degree of drought; Peat soil and perlite with loose texture and good air permeability were suitable for germination; The seeds were not resistant to storage and should be sown in time after collection; The seed germination rate of Sanjiang population in Gongcheng County of Guilin was the highest among the three geographical provenances. The seed setting rate of K. calcarea cone was low, the seed germination was strict with temperature, and the seed was easy to lose vigor, which may be an important reason for its endangerment. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Natural Disasters is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Journal of Computer-Aided Design & Computer Graphics / Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)