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Integrated interconnected porous and lamellar structures realized fast ion/electron conductivity in high-performance lithium-sulfur batteries

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Chinese Chemical Letters 2024年第6期35卷 161-167页

作者： Ya Song mingxia Zhou zhu Chen Huali Nie Jiao-Jing Shao Guangmin Zhou School of Materials and Metallurgy Guizhou UniversityGuiyang 550025China Medical College of Guizhou University Guiyang 550025China College of Biological Science and Medical Engineering Donghua UniversityShanghai 201620China Shenzhen Geim Graphene Center Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China

The practical application of high-energy-density lithium-sulfur(Li-S)batteries have been highly praised for energy storage devices,while are largely hindered by the“shuttling effect”.Herein,core-shell carbon spheres composed of interlinked porous core and lamellar shell were designed to restrain the polysulfide shuttling.The microporous structure with pore size of around 1 nm effectively trap lithium polysulfides.Furthermore,the interconnected porous core shortens the ion transfer distance and the lamellar carbon shell endows the carbon spheres with fast electron conduction,finally facilitating polysulfide conversion kinetics.Therefore,the Li-S batteries with the carbon spheres as the interlayer show high discharge specific capacity of 1002 m Ah/g at 2 C with 574 m Ah/g remaining after 600 cycles,and high areal capacity of 5.48 m Ah/cm^(2) with sulfur loading of 4.67 mg/cm^(2) at 0.1 C.The corresponding pouch cells also exhibit stable cycling stability with an initial discharge specific capacity of 1082 m Ah/g at 0.1 C.

关键词： Interlayer Shuttle effect Strong adsorption Porous carbon spheres Lithium-sulfur batteries

Baduanjin exercise improved premenstrual syndrome symptoms in Macau women

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Journal of Traditional Chinese Medicine 2014年第4期34卷 460-464页

作者： Huilin Zhang mingxia zhu Yang Song Meirong Kong Nursing Department the Second Xiangya Hospital of Central South University Kiang Wu Nursing College of Macau Research Service Office Kiang Wu Nursing College of Macau Gynaecology and Obstetrics Guangzhou University of Chinese Medicine Gynecology and Obstetrics Teaching and Research Office KiangWu Nursing College of Macau

OBJECTIVE: To investigate the effect of Baduanjin,a traditional Chinese medical exercise, on improving premenstrual syndrome(PMS) symptoms in women.METHODS: Forty reproductive age women with PMS in Macau practiced standardized Baduanjin exercise for three menstrual cycles. A questionnaire,the daily record of severity of problems(DRSP), was used to measure symptom severity. DRSP was filled out every days tarting from the last cycle before exercise(i.e., the first menstrual cycle) to the third cycle after exercise initiation(i.e., the fourth menstrual cycle). The total scores and the scores of each item during the 5 premenstrual days and follicular phase(5-9 postmenstrual days)were calculated.RESULTS: After exercise, the total DRSP scores dur-ing the 5 premenstrual days and differences in the total DRSP scores between the 5 premenstrual days and the follicular phase were both significantly reduced. Of note, the physical symptom total scores in the 5 premenstrual days and the differences between its total score in the 5 premenstrual days and in the follicular phase were both significantly reduced. The differences between the total scores of depressed mood, anxious mood, loss of interest,and reduction in social activity during the 5 premenstrual days and the follicular phase were also reduced.CONCLUSION: Baduanjin exercise was able to improve the mental and especially the physical symptoms of PMS.

关键词： Premenstrual syndrome Baduanjin exercise Questionnaires Daily record of severity of problems

粤港澳大湾区华人居民死亡素养现状及当代生死教育初探

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中国医学伦理学 2024年第4期37卷 491-498页

作者：朱明霞谢淑玲黎想伍慧儿澳门镜湖护理学院教学部中国澳门999078 澳门镜湖护理学院护理及健康教研中心中国澳门999078

目的了解粤港澳大湾区华人居民的死亡素养现状,探讨提升社会大众死亡素养的教育途径。方法采用死亡素养指数量表,包括实践、经验、事实、社区四个维度共29项,对粤港澳大湾区2002位居民进行了死亡素养问卷调查。结果受访者死亡素养平均... 详细信息

目的了解粤港澳大湾区华人居民的死亡素养现状,探讨提升社会大众死亡素养的教育途径。方法采用死亡素养指数量表,包括实践、经验、事实、社区四个维度共29项,对粤港澳大湾区2002位居民进行了死亡素养问卷调查。结果受访者死亡素养平均得分中等(6.70分),其中实践与经验知识得分(7.32分、7.50分)高于事实及社区知识方面(6.20分、6.10分);最薄弱的内容有与刚失去亲人的人谈论丧亲(5.07分)、在家死亡相关法律条例(5.35分)以及对临终者及家属在社区获得支持等。结论粤港澳大湾区华人居民的死亡素养为中等状态,其中社区知识较弱,包括对临终者及照顾者的关注与支持不足。由此提出社区健康教育策略,加强大众生死教育,提升居民死亡素养。

关键词：死亡素养粤港澳大湾区生死教育

双系统理论视角下用户数字囤积行为的形成机理与演化路径研究

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情报学报 2024年第3期43卷 339-356页

作者：贾明霞赵宇翔朱庆华吴大伟南京理工大学经济管理学院南京210094 南京大学信息管理学院南京210023

过度获取和无法丢弃无价值或价值有限的数字信息的严重囤积行为会干扰个体的学习、生活和工作,甚至对信息资源管理、数字治理、数据要素市场培育等产生不利影响。对21个访谈文本和3个社交媒体平台中爬取的有关数字囤积现象的3568条有效... 详细信息

过度获取和无法丢弃无价值或价值有限的数字信息的严重囤积行为会干扰个体的学习、生活和工作,甚至对信息资源管理、数字治理、数据要素市场培育等产生不利影响。对21个访谈文本和3个社交媒体平台中爬取的有关数字囤积现象的3568条有效评论的混合数据进行扎根理论分析,以厘清大数据和社交媒体环境下个体的数字囤积行为的形成与演化路径。研究结果表明,数字囤积行为的形成与演化路径呈非线性,主要是个体在数字积累过程中“寻求不确定性掌控感”的驱动与“自我调节与控制”的抑制之间逐渐失衡的对峙导致的结果。同时,研究识别了寻求不确定性掌控感的3种表现类型与过程,确定了影响数字囤积行为的情境因素,考察了在非理性信息行为中容易被忽视但却普遍存在的反思性过程,即自我调节与控制,以深入挖掘应对措施下个体仍旧发生或沉迷数字囤积的原因。本文基于双系统理论建构了一个解释数字囤积行为形成与演化的实质性理论模型,研究结果不仅能为信息服务平台以及数字信息服务机构的管理决策提供新洞见,也对个体、数字企业和组织乃至数字社会的信息资源管理和可持续发展具有重要的启示意义。

关键词：非理性信息行为数字囤积行为不确定性掌控感自我调节与控制对峙失衡

Identification of serum metabolites enhancing inflammatory responses in COVID-19

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Science China(Life Sciences) 2022年第10期65卷 1971-1984页

作者： Chen-Song Zhang Bingchang Zhang Mengqi Li Xiaoyan Wei Kai Gong Zhiyong Li Xiangyang Yao Jianfeng Wu Cixiong Zhang mingxia zhu Lei Zhang Xiufeng Sun Yi-Hong Zhan Zhengye Jiang Wenpeng Zhao Wei Zhong Xinguo zhuang Dawang Zhou Hai-Long Piao Sheng-Cai Lin Zhanxiang Wang State Key Laboratory for Cellular Stress Biology School of Life SciencesXiamen UniversityXiamen361102China Department of Neurosurgery Xiamen Key Laboratory of Brain Centerthe First Affiliated Hospital of Xiamen UniversityXiamen361102China Department of Laboratory Medicine The First Affiliated Hospital of Xiamen UniversityXiamen361102China Department of pulmonary diseases The First Affiliated Hospital of Xiamen UniversityXiamen361102China School of Medicine Xiamen UniversityXiamen361102China Scientific Research Center for Translational Medicine Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian116023China Institute of Neurosurgery School of MedicineXiamen UniversityXiamen361102China

Coronavirus disease 2019(COVID-19),caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),is characterized by a strong production of inflammatory cytokines such as TNF and IL-6,which underlie the severity of the disease.However,the molecular mechanisms responsible for such a strong immune response remains unclear.Here,utilizing targeted tandem mass spectrometry to analyze serum metabolome and lipidome in COVID-19 patients at different temporal stages,we identified that 611 metabolites(of 1,039)were significantly altered in COVID-19 patients.Among them,two metabolites,agmatine and putrescine,were prominently elevated in the serum of patients;and 2-quinolinecarboxylate was changed in a biphasic manner,elevated during early COVID-19 infection but levelled off.When tested in mouse embryonic fibroblasts(MEFs)and macrophages,these 3 metabolites were found to activate the NF-κB pathway that plays a pivotal role in governing cytokine production.Importantly,these metabolites were each able to cause strong increase of TNF and IL-6 levels when administered to wildtype mice,but not in the mice lacking NF-κB.Intriguingly,these metabolites have little effects on the activation of interferon regulatory factors(IRFs)for the production of type I interferons(IFNs)for antiviral defenses.These data suggest that circulating metabolites resulting from COVID-19 infection may act as effectors to elicit the peculiar systemic inflammatory responses,exhibiting severely strong proinflammatory cytokine production with limited induction of the interferons.Our study may provide a rationale for development of drugs to alleviate inflammation in COVID-19 patients.

关键词： COVID-19 metabolites inflammation

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物理协同酶法处理对青稞淀粉结构的影响

食品工业科技 2024年第3期45卷 40-46页

作者：白婷李琳朱明霞靳玉龙王姗姗张玉红西藏自治区农牧科学院农产品开发与食品科学研究所西藏拉萨850000 西藏农牧学院西藏林芝860000

为研究物理协同酶法处理对青稞淀粉结构特性的影响,采用超声、压热协同普鲁兰酶对青稞淀粉进行处理,测定了处理后样品的颗粒形貌、晶体结构、官能团结构、粒径大小。试验结果表明,处理可以提高抗性淀粉和直链淀粉含量,降低支链淀粉的含... 详细信息

为研究物理协同酶法处理对青稞淀粉结构特性的影响,采用超声、压热协同普鲁兰酶对青稞淀粉进行处理,测定了处理后样品的颗粒形貌、晶体结构、官能团结构、粒径大小。试验结果表明,处理可以提高抗性淀粉和直链淀粉含量,降低支链淀粉的含量。改性处理使青稞淀粉颗粒的原始结构遭到了严重破坏,呈现出团状结构,表面粗糙,布满褶皱、裂纹和孔洞;淀粉的偏光十字消失。改性后的青稞淀粉表面积平均粒径增大,大颗粒数目增加。物理协同酶法处理增加了青稞淀粉的结晶度,晶型由A型晶体向B型转变。改性处理没有产生新的化学基团和化学键,只是改变了青稞淀粉内部结构的重新排列。此外与青稞原淀粉相比,改性青稞淀粉的有序度(DO)值增大,其中普鲁兰酶处理后的青稞淀粉的DO比值最大。改性处理使青稞原淀粉颗粒中的淀粉分子分解成小分子又重新结晶,形成的改性青稞淀粉含有更加致密的大淀粉晶体。

关键词：物理协同普鲁兰酶青稞淀粉结构特性

Baduanjin exercise improved premenstrual syndrome symptoms in Macao women

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Journal of Traditional Chinese Medicine 2014年第4期34卷 460-464页

作者： Huilin Zhang mingxia zhu Yang Song Meirong Kong Nursing Department the Second Xiangya Hospital of Central South University Kiang Wu Nursing College of Macao Research Service Office Kiang Wu Nursing College of Macao Gynaecology and Obstetrics Guangzhou University of Chinese Medicine Gynecology and Obstetrics Teaching and Research Office KiangWu Nursing College of Macao

OBJECTIVE: To investigate the effect of Baduanjin,a traditional Chinese medical exercise, on improving premenstrual syndrome(PMS) symptoms in women.METHODS: Forty reproductive age women with PMS in Macao practiced standardized Baduanjin exercise for three menstrual cycles. A questionnaire,the daily record of severity of problems(DRSP), was used to measure symptom severity. DRSP was filled out every days tarting from the last cycle before exercise(i.e., the first menstrual cycle) to the third cycle after exercise initiation(i.e., the fourth menstrual cycle). The total scores and the scores of each item during the 5 premenstrual days and follicular phase(5-9 postmenstrual days)were calculated.RESULTS: After exercise, the total DRSP scores dur-ing the 5 premenstrual days and differences in the total DRSP scores between the 5 premenstrual days and the follicular phase were both significantly reduced. Of note, the physical symptom total scores in the 5 premenstrual days and the differences between its total score in the 5 premenstrual days and in the follicular phase were both significantly reduced. The differences between the total scores of depressed mood, anxious mood, loss of interest,and reduction in social activity during the 5 premenstrual days and the follicular phase were also reduced.CONCLUSION: Baduanjin exercise was able to improve the mental and especially the physical symptoms of PMS.

关键词：症候群症状运动妇女澳门月经周期中国传统医学焦虑情绪

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隆子黑青稞花青素提取及体外抗氧化活性分析

中国农学通报 2024年第14期40卷 142-147页

作者：朱明霞张玉红西藏自治区农牧科学院农产品开发与食品科学研究所拉萨850000

为了分析花青素提取液的体外抗氧化活性。以‘隆子黑青稞’为原料,采用超声波辅助酸水法提取‘隆子黑青稞’花青素,并采用正交实验优化了工艺条件。结果表明‘,隆子黑青稞’花青素的提取得率受料液比的影响最大,其次是水浴提取温度和超... 详细信息

为了分析花青素提取液的体外抗氧化活性。以‘隆子黑青稞’为原料,采用超声波辅助酸水法提取‘隆子黑青稞’花青素,并采用正交实验优化了工艺条件。结果表明‘,隆子黑青稞’花青素的提取得率受料液比的影响最大,其次是水浴提取温度和超声温度,在液料比20 mL:1 g,超声温度40℃,超声时间40 min,水浴提取温度60℃,水浴提取时间为3 h的提取条件下,得率最高。同一样品对不同自由基的清除能力不同,整体来说,对超氧阴离子自由基的清除能力最强,‘隆子黑青稞’花青素粗提液对自由基有一定的清除能力。

关键词：黑青稞花青素提取抗氧化活性

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基于马尔可夫决策过程的附加服务定价优化

哈尔滨商业大学学报（自然科学版） 2024年第1期40卷 118-122页

作者：杨明霞朱星辉南京航空航天大学民航学院南京211100

随着民航运输业竞争日益加剧以及航空旅客个性化需求逐步提高,为取得差异化竞争优势和提高旅客满意度,开展附加服务业务是目前国内外航空公司关注的焦点,如何对附加服务定价以增加收益是目前航空公司运营的一个重要问题.为此基于马尔可... 详细信息

随着民航运输业竞争日益加剧以及航空旅客个性化需求逐步提高,为取得差异化竞争优势和提高旅客满意度,开展附加服务业务是目前国内外航空公司关注的焦点,如何对附加服务定价以增加收益是目前航空公司运营的一个重要问题.为此基于马尔可夫决策过程提出了一种附加服务定价模型,并使用策略迭代算法对该模型进行求解以获得最优价格.对两类旅客细分市场进行仿真实验.结果表明,相比于现行使用较多的附加服务短视化定价模型,通过该模型求解得到最优价格将每位旅客的平均预期收益从93.7元提高到102.1元,提升幅度约8.96%.

关键词：航空运输收益管理附加服务服务定价马尔可夫决策过程策略迭代