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滚动轴承局部故障时变刚度系统动力学分析

振动与冲击 2024年第9期43卷 241-248页

作者：郭宝良赵玉秀史丽晨李玲段志善西安建筑科技大学机电工程学院西安710055 西安思源学院图书馆西安710038

针对滚动轴承局部故障动力学建模问题,通过分析各滚动体在进入、退出载荷区和陷入故障时的变化情况,基于Hertz接触理论,定义了接触变形保留因子,提出了滚动轴承等效时变刚度函数,建立了局部故障滚动轴承单自由度时变刚度动力学模型,并... 详细信息

针对滚动轴承局部故障动力学建模问题,通过分析各滚动体在进入、退出载荷区和陷入故障时的变化情况,基于Hertz接触理论,定义了接触变形保留因子,提出了滚动轴承等效时变刚度函数,建立了局部故障滚动轴承单自由度时变刚度动力学模型,并进行了理论分析和试验研究。研究结果表明:当滚动体进入或退出载荷区时,载荷区中承载滚动体数量增加或减少,引起系统等效时变刚度的小幅增加或减小;当滚动体陷入故障时,因接触变形保留因子的不同使得其有效接触刚度不同程度降低而导致系统等效时变刚度的减小。系统等效时变刚度的变化引起载荷区中其他滚动体的接触变形和接触力产生不同幅度的变化,从而平衡外部径向载荷,对载荷区中心附近的滚动体的影响较为明显,但不影响各滚动体的有效接触刚度。系统等效时变刚度发生突变,导致系统振动。当外环故障时,等效时变刚度等幅变化;当内环故障时,等效时变刚度的变化受到内环旋转的调制而幅值不同。提出的单自由度时变刚度动力学模型与实际更加吻合。

关键词：滚动轴承局部故障动力学等效时变刚度

Endocrine therapy of short duration prevents local and contralateral recurrence of ductal carcinoma in situ of the breast: A multicenter retrospective cohort study in China

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中华医学杂志(英文版) 2024年第14期137卷 1756-1758页

作者： Wang Zhen Jin Zining Zhang Huanrui Xu Guiying Zhang Dianlong Fang Fengqi Xing Hua Wang Jia guo baoliang Zhu guolian Liu Yongzhi Li Jieqing Cai Zhengang Sun Liang Zhang Yuting Zhou Tianyang Liu Chang Zhou Baosen Jin Feng Zhang Yan Song Dong Chen Bo Department of Breast Surgery The First Hospital of China Medical University Shenyang Liaoning China Department of Breast and Thyroid Surgery Shandong Provincial Hospital Affiliated to Shandong First Medical University Jinan Shandong China Department of Geriatric Medicine The First Hospital of China Medical University Shenyang Liaoning China Department of Breast Surgery Jilin Cancer Hospital Changchun Jilin China Department of Breast and Thyroid Surgery Affiliated Zhongshan Hospital of Dalian University Dalian Liaoning China Department of Oncology The First Affiliated Hospital of Dalian Medical University Dalian Liaoning China Department of Breast Surgery China-Japan Union Hospital Affiliated to Jilin University Changchun Jilin China Department of Breast Surgery The Second Hospital of Dalian Medical University Dalian Liaoning China Department of Breast Surgery The Second Affiliated Hospital of Harbin Medical University Harbin Heilongjiang China Department of Breast Surgery The Fifth People’s Hospital of Shenyang Shenyang Liaoning China Department of Breast Surgery General Hospital of Benxi Iron &amp Steel Industry Group of Liaoning Health Industry Group Benxi Liaoning China Department of Breast Surgery The Fourth People’s Hospital of Shenyang Shenyang Liaoning China Department of Breast Surgery The First Affiliated Hospital of Dalian Medical University Dalian Liaoning China Department of Clinical Epidemiology and Center of Evidence Based Medicine The First Hospital of China Medical University Shenyang Liaoning China Department of Breast Surgery The Second Hospital of Jilin University Changchun Jilin China Department of Breast Surgery General Surgery Center The First Hospital of Jilin University Changchun Jilin China

To the Editor: De-escalating the treatment of ductal carcinoma in situ (DCIS) of the breast has been investigated in recent years. A 5-year adjuvant endocrine therapy (AET) regimen is the recommended treatment for hormone receptor-positive DCIS. Selective estrogen receptor modulators (such as the commonly used tamoxifen and toremifene) and aromatase inhibitors (AIs) are the currently used AET drugs. However, long-term AET is accompanied by severe side effects such as menopausal symptoms, endometrial carcinoma, cardiovascular events, venous thromboembolic events, osteoporosis, and joint pain that can significantly reduce patients’ quality of life. It was reported that only 50% of the patients completed the recommended 5-year AET mainly because of side effects, while higher adherence rates were observed with shorter-duration regimens. Therefore, de-escalation of AET should be considered to reduce the side effects of AET and improve adherence.

关键词： ADHERENCE

Sense of the Scene,Reflexivity,and New Local Writing:On Above Baiyangdian Lake by Guan Renshan

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Frontiers of Literary Studies in China-Selected Publications from Chinese Universities 2023年第2期17卷 146-155页

作者： guo baoliang College of Chinese and Literature Hebei Normal UniversityShijiazhuang 050024China

Above Baiyangdian Lake is a meticulously crafted novel by Guan Renshan nearing a million words in *** novel offers a panoramic view of everyday life in Baiyangdian Lake and the development of the Xiong'an New *** novel exemplifies a genuine sense of the scene by presenting readers with a vivid,authentic depiction of our contemporary *** employs a narrative structure that overlaps the present with the past,blending tradition and modernity to create a truly magnificent *** than avoiding the contradictions and darkness inherent to humanity,the novel embraces them and strives to accurately depict their complexity,resulting in a more profound reflection on *** Baiyangdian Lake expands and innovates the path of local literature by applying a genuinely realistic *** not only surpasses Guan's writing style,but also represents a transcendence of local writing conventions in contemporary *** draws upon and elevates the literary tradition of the Hehuadian School,emerging as a notable example of new local writing with distinct regional traits.

关键词： Guan Renshan Above Baiyangdian Lake sense of the scene reflexivity new local writing

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四轴惯性水平振动输送机的优化研究

西安建筑科技大学学报（自然科学版） 2014年第6期46卷 903-909页

作者：郭宝良西安建筑科技大学机电工程学院陕西西安710055

针对基于物料滑移理论干摩擦驱动下物料的水平振动输送速度的优化问题,在改进并分段求解四轴惯性水平振动输送系统动力学模型的基础上,用缝接法研究了物料与振动输送机间的五种相对运动形式,并研究了振动输送机的频率比、偏心质量矩之... 详细信息

针对基于物料滑移理论干摩擦驱动下物料的水平振动输送速度的优化问题,在改进并分段求解四轴惯性水平振动输送系统动力学模型的基础上,用缝接法研究了物料与振动输送机间的五种相对运动形式,并研究了振动输送机的频率比、偏心质量矩之比和相位差对物料输送速度的影响,取得了这三个参数的优化取值范围,为此类输送机的设计提供理论基础。

关键词：水平振动输送机物料输送速度干摩擦频率比偏心质量矩之比

Vibration mechanism analysis and algorithm optimization of contactor contact system

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Journal of Measurement Science and Instrumentation 2021年第4期12卷 396-404页

作者： HUANG Kepeng WANG Fazhan ZHAO Mingji guo baoliang OU Daquan College of Mechanical and Electrical Engineering Xi’an University of Architecture & Technology Xi’ an 710055 China Technology R&D Center ABB Xinhui Low-Voltage Switchgear Co. Ltd. Jiangmen 529089 China

In order to solve the problem of vibration bounce caused by the contact between moving and stationary contacts in the process of switching on,two-degree-of-freedom motion differential equation of the contact system is *** algorithm is used to optimize the pull in process of AC *** whole process of contact bounce was observed and analyzed by high-speed photography *** theory and experimental results were very *** iron core has collided before the contact is separated,which further aggravates the contact *** the iron core bounces collided again,the bounce of the contact was not *** the operation of the contactor,the movement of the moving iron core will cause slight vibration of the *** contact bounce time and the maximum amplitude are *** research results provide a theoretical basis for further control and reduction of contact bounce.

关键词： electrical switch contact bounce two-degree-of-freedom motion differential equation algorithm optimization high-speed photography

铁皮石斛对ApoE-/-小鼠动脉粥样硬化的影响及机制研究

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心脑血管病防治 2024年第6期24卷 13-16页

作者：王丽方天富包剑锋林世东王勉郭宝亮薛陆静蔡兆斌浙江省杭州市西溪医院心血管内科 310023 浙江省杭州市红十字会医院心血管内科 310003 浙江省杭州市第三人民医院心血管内科 310009

目的探讨铁皮石斛对ApoE-/-小鼠动脉粥样硬化的影响及作用机制。方法用高脂饲料喂养建立ApoE-/-小鼠动脉粥样硬化模型,随机分别给予生理盐水(10 mL/kg)、麝香保心丸溶液(20 mg/kg)、低剂量铁皮石斛液(10 g/kg)、高剂量铁皮石斛液(30 g/... 详细信息

目的探讨铁皮石斛对ApoE-/-小鼠动脉粥样硬化的影响及作用机制。方法用高脂饲料喂养建立ApoE-/-小鼠动脉粥样硬化模型,随机分别给予生理盐水(10 mL/kg)、麝香保心丸溶液(20 mg/kg)、低剂量铁皮石斛液(10 g/kg)、高剂量铁皮石斛液(30 g/kg)为模型组、阳性药物组、低剂量组和高剂量组,普通饲料喂养ApoE-/-小鼠为对照组给予生理盐水(10 mL/kg),每组8只。治疗4周后,苏木精-伊红染色观察小鼠胸主动脉组织病理学改变;检测小鼠血浆中甘油三酯(TG)、总胆固醇(TC)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)水平;利用荧光定量PCR技术检测胸主动脉中胆固醇外转运蛋白ATP结合盒转运体A1(ABCA1)、ATP结合盒转运体G1(ABCG1)、过氧化物酶体增殖物激活受体γ(PPARγ)表达情况。结果与对照组比较,模型组动脉内膜脂质斑块形成,斑块内有菱形胆固醇结晶,伴炎性细胞浸润和大量泡沫细胞聚集。与模型组比较,阳性药物组、低剂量组和高剂量组小鼠胸主动脉的泡沫细胞沉积减少,动脉粥样硬化病变程度减轻。与对照组比较,模型组TG、TC、LDL-C水平高、HDL-C水平低,ABCA1、ABCG1、PPARγ表达量低,差异有统计学意义(P<0.05)。与模型组比较,阳性对照组、低剂量组和高剂量组TG和TC水平降低,HDL-C水平升高;阳性药组、高剂量组ABCA1、ABCG1、PPARγ表达量升高,差异有统计学意义(P<0.05)。结论铁皮石斛可改善ApoE-/-动脉粥样硬化小鼠的血脂水平,减轻动脉粥样硬化小鼠的动脉病变程度,可能与影响ABCA1、ABCG1和PPARγ的表达有关。

关键词：铁皮石斛高脂血症动脉粥样硬化 ApoE-/-小鼠

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浅谈王蒙近年来小说创作的新探索

当代作家评论 2020年第5期 100-108页

作者：郭宝亮河北师范大学文学院

从1953年创作《青春万岁》开始,迄今为止王蒙已有67年的创作历史。其创作生命之长、创造力之旺盛,都是无人匹敌的,把他称为文学界的"劳动模范"是当之无愧的。进入老年以来,王蒙仍然战斗在创作一线,且佳作频出,据不完全统计,近十年来王... 详细信息

从1953年创作《青春万岁》开始,迄今为止王蒙已有67年的创作历史。其创作生命之长、创造力之旺盛,都是无人匹敌的,把他称为文学界的"劳动模范"是当之无愧的。进入老年以来,王蒙仍然战斗在创作一线,且佳作频出,据不完全统计,近十年来王蒙共出版各种著作、文集十余部,其中小说集就有七部。特别是2015年以来,他几乎每两年就出版一部小说集,2020年还出版了长篇小说《笑的风》。

关键词：创作生命《青春万岁》王蒙小说集小说创作创造力劳动模范文学界

大众传媒时代的“无根”写作——20世纪90年代以来文学艺术中的“猎奇化”现象

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文艺研究 2007年第7期 4-11页

作者：郭宝亮河北师范大学文学院

"猎奇化"现象,已经成为20世纪90年代以来文学艺术中的痼疾,也是我们时代普遍的精神症候。猎奇化的宗旨是为了寻求刺激,这种刺激决不会涉及心灵,它是肉体的、感官的、肤浅的,因而也是无根的。猎奇化还是资本运作的机制。我们的审美是被... 详细信息

"猎奇化"现象,已经成为20世纪90年代以来文学艺术中的痼疾,也是我们时代普遍的精神症候。猎奇化的宗旨是为了寻求刺激,这种刺激决不会涉及心灵,它是肉体的、感官的、肤浅的,因而也是无根的。猎奇化还是资本运作的机制。我们的审美是被资本所控制的,资本营造了我们生存的幻像,并以"艺术的"方式满足了我们的虚拟享乐的欲求。猎奇化的深层动因是我们时代的虚无主义价值观。猎奇化使文学成为无根的写作,既缺乏现实的支撑,也缺乏历史的支撑。因此,重铸历史深度,重新确认精神价值的优先地位,是大众传媒时代写作的当务之急。

关键词：大众传媒时代无根写作猎奇化

Innovations in metallurgical and materials processes:advancing liquid theory and honoring ***-jie guo's contributions to physical chemistry in metallurgy

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Journal of Iron and Steel Research International 2024年第1期31卷 1-2页

作者： Shuai Liu Jing guo Han-jie guo School of Artificial Intelligence Beijing Technology and Business UniversityBeijing100048China School of Metallurgical and Ecological Engineering University of Science and Technology Beijing(USTB)Beijing100083China

Spanning three decades,***-jie guo's research group has dedicated itself to exploring the fundamental theories and practical applications of physical chemistry within the realm of *** under the assumption that molecul... 详细信息

关键词： chemistry liquid complexes