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Tribological Behaviors of Electroless Nickel-Boron Coating on Titanium Alloy Surface

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Chinese Journal of Mechanical Engineering 2024年第1期37卷 309-320页

作者： yao jia jianping Lai jiaxin Yu Huimin Qi Yafeng Zhang Hongtu He Key Laboratory of Testing Technology for Manufacturing Process in Ministry of Education State Key Laboratory of Environment-Friendly Energy MaterialsSouthwest University of Science and TechnologyMianyang 621010China

Titanium alloys are excellent structural materials in engineering fields,but their poor tribological properties limit their further *** plating is an effective method to enhance the tribological performance of alloys,but it is difficult to efficiently apply to titanium alloys,due to titanium alloy’s strong chemical *** this work,the electroless Nickel-Boron(Ni-B)coating was successfully deposited on the surface of titanium alloy(Ti-6AL-4V)via a new pre-treatment ***,linearly reciprocating sliding wear tests were performed to evaluate the tribological behaviors of titanium alloy and its electroless Ni-B *** was found that the Ni-B coatings can decrease the wear rate of the titanium alloy from 19.89×10^(−3)mm^(3)to 0.41×10^(−3)mm^(3),which attributes to the much higher hardness of Ni-B *** heat treatment,the hardness of Ni-B coating further increases corresponding to coating crystallization and hard phase ***,heat treatment does not improve the tribological performance of Ni-B coating,due to the fact that higher brittleness and more severe oxidative wear exacerbate the damage of heat-treated ***,the Ni-B coatings heat-treated both in air and nitrogen almost present the same tribological *** finding of this work on electroless coating would further extend the practical applications of titanium alloys in the engineering fields.

关键词： Electroless coating Titanium alloy Tribology Wear Heat treatment Nanoindentation

Impact of frailty on postoperative outcomes after hepatectomy:A systematic review and meta-analysis

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World Journal of Gastrointestinal Surgery 2024年第7期16卷 2319-2328页

作者： yao-jia Lv Guang-Xing Xu jia-Rong Lan Day Surgery Ward Huzhou Central HospitalThe Affiliated Central Hospital of Huzhou UniversityHuzhou 313000Zhejiang ProvinceChina School of Basic Medical Sciences Zhejiang Chinese Medical UniversityHangzhou 310053Zhejiang ProvinceChina Department of Medicine Huzhou Traditional Chinese Medicine Hospital Affiliated to Zhejiang Chinese Medical UniversityHuzhou 313000Zhejiang ProvinceChina

BACKGROUND The impact of frailty on postoperative outcomes in patients undergoing hepatectomy is still *** To study the influence of frailty on postoperative outcomes,such as mortality,rate of complications,and length of hospitalization,following *** PubMed,EMBASE,and Scopus databases were searched for observational studies with adult(≥18 years)patients after planned/elective hepatectomy.A randomeffects model was used for all analyses,and the results are expressed as weighted mean difference(WMD),relative risk(RR),or hazards ratio(HR)with 95%confidence interval(CI).RESULTS Analysis of the 13 included studies showed a significant association of frailty with elevated risk of in-hospital mortality(RR=2.76,95%CI:2.10-3.64),mortality at 30 d(RR=4.60,95%CI:1.85-11.40),and mortality at 90 d(RR=2.52,95%CI:1.70-3.75)in the postoperative *** patients had a poorer long-term survival(HR=2.89,95%CI:1.84-4.53)and higher incidence of“any”complications(RR=1.69,95%CI:1.40-2.03)and major(grade III or higher on the Clavien-Dindo scale)complications(RR=2.69,95%CI:1.85-3.92).Frailty was correlated with markedly lengthier hospital stay(WMD=3.65,95%CI:1.45-5.85).CONCLUSION Frailty correlates with elevated risks of mortality,complications,and prolonged hospitalization,which need to be considered in surgical *** research is essential to formulate strategies for improved outcomes in this vulnerable cohort.

关键词： Frailty Frail adults Hepatic resection Hepatectomy Complications Mortality Survival Clinical outcomes Meta-analysis

Methyl functionalization of trimesic acid in copper-based metal-organic framework for ammonia colorimetric sensing at high relative humidity

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Chinese Chemical Letters 2024年第6期35卷 211-215页

作者： Yuxin Wang Zhengxuan Song Yutao Liu Yang Chen Jinping Li Libo Li jia yao College of Chemical Engineering and Technology Shanxi Key Laboratory of Gas Energy Efficient and Clean UtilizationTaiyuan University of TechnologyTaiyuan 030024China Department of Gastroenterology Shanxi Bethune HospitalShanxi Academy of Medical SciencesTongji Shanxi HospitalThird Hospital of Shanxi Medical UniversityTaiyuan 030024China

Exhaled ammonia(NH_(3))can be used as a crucial biomarker of kidney and liver ***,the high humidity in the detection conditions remains a challenge for accurate detection by gas ***,a copper-based metal-organic framework(CH_(3)-Cu-BTC)with methyl(CH_(3)^(-))functionalization of trimesic acid was synthesized for NH_(3) colorimetric *** CH_(3)-Cu-BTC exhibited a strong response for 5 ppm NH_(3) with high selectivity under high relative humidity(75%RH).Density functional theory(DFT)simulations indicated that the NH_(3) molecules interacted more strongly with CH_(3)-Cu-BTC than H_(2)O molecules did,and the corresponding color switching was attributed to the lone-pair electron in NH_(3) changing the coordination environment of Cu^(2+)ions,leading to an obviously visible color switching response from ruby green to *** on the tailor-made pore chemistry,the precise detection of trace amounts of NH_(3) in exhaled air was realized through functionalized MOF *** strategy used in this study not only offers a new pathway for the rapid detection of low concentration NH_(3) under humid conditions,but also shows a method for early respiration diagnosis of kidney and liver diseases.

关键词： Metal-organic framework Ammonia sensing Naked-eye color switching High humidity Respiration diagnosis

Role of gut microbiota in Crohn’s disease pathogenesis:Insights from fecal microbiota transplantation in mouse model

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World Journal of Gastroenterology 2024年第31期30卷 3689-3704页

作者： Qiang Wu Lian-Wen Yuan Li-Chao Yang Ya-Wei Zhang Heng-Chang yao Liang-Xin Peng Bao-jia yao Zhi-Xian jiang Geriatric Surgery of Department of General Surgery The Second Xiangya HospitalCentral South UniversityChangsha 410011Hunan ProvinceChina

BACKGROUND Inflammatory bowel disease,particularly Crohn’s disease(CD),has been associated with alterations in mesenteric adipose tissue(MAT)and the phenomenon termed“creeping fat”.Histopathological evaluations showed that MAT and intestinal tissues were significantly altered in patients with CD,with these tissues characterized by inflammation and *** To evaluate the complex interplay among MAT,creeping fat,inflammation,and gut microbiota in *** Intestinal tissue and MAT were collected from 12 patients with *** manifestations and protein expression levels were analyzed to determine lesion *** samples were collected from five recently treated CD patients and five control subjects and transplanted into *** intestinal and mesenteric lesions in these mice,as well as their systemic inflammatory status,were assessed and compared in mice transplanted with fecal samples from CD patients and control *** Pathological examination of MAT showed significant differences between CDaffected and unaffected colons,including significant differences in gut microbiota *** microbiota transplantation(FMT)from clinically healthy donors into mice with 2,4,6-trinitrobenzene sulfonic acid(TNBS)-induced CD ameliorated CD symptoms,whereas FMT from CD patients into these mice exacerbated CD ***,FMT influenced intestinal permeability,barrier function,and levels of proinflammatory factors and ***,FMT from CD patients intensified fibrotic changes in the colon tissues of mice with TNBS-induced *** Gut microbiota play a critical role in the histopathology of *** MAT and creeping fat may therefore have potential in the treatment of patients with CD.

关键词： Mesenteric adipose tissue Crohn’s disease Fecal microbiota transplantation Intestinal fibrosis Intestinal barrier

Liver stiffness in hepatocellular carcinoma and chronic hepatitis patients:Hepatitis B virus infection and transaminases should be considered

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World Journal of Hepatology 2024年第7期16卷 1018-1028页

作者： jia-yao Huang jian-Yun Peng Hai-Yi Long Xian Zhong Yu-Hua Xie Lu yao Xiao-Yan Xie Man-Xia Lin Department of Medical Ultrasonics The First Affiliated HospitalSun Yat-sen UniversityGuangzhou 510080Guangdong ProvinceChina

BACKGROUND Liver condition is a crucial prognostic factor for patients with hepatocellular carcinoma(HCC),but a convenient and comprehensive method to assess liver condition is *** stiffness(LS)measured by two-dimensional shear wave elastography may help in assessing liver fibrosis and liver *** hepatitis B(CHB)is an important risk factor for HCC progression,but LS was found to be less reliable in assessing liver fibrosis following hepatitis viral *** hypothesize that the status of hepatitis virus infection would affect the accuracy of LS in assessing the liver *** To test the feasibility and impact factors of using LS to assess liver condition in patients with HCC and *** A total of 284 patients were retrospectively recruited and classified into two groups on the basis of serum CHB virus hepatitis B virus(HBV)-DNA levels[HBV-DNA≥100.00 IU/mL as Pos group(n=200)and40 U/L),the correlations between LS and liver condition indices were not significant(P>0.05).CONCLUSION LS was significantly correlated with most liver condition indices in patients with CHB and ***,these correlations varied according to differences in HBV-DNA and transaminase concentrations.

关键词： Liver function Liver stiffness Elastography Chronic hepatitis B Hepatocellular carcinoma

个人信息保护检察民事公益诉讼的理论基础与实施进路

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政法论坛 2024年第4期42卷 52-62页

作者：姚佳中国社会科学院大学法学院中国社会科学院法学研究所

在个人信息保护领域,检察公益诉讼作为私法、监管、刑事制裁的重要补充,承担着保护不特定多数人的个人信息权益的重要功能与作用。“国家辅助性理论”是作为公共利益代表的检察机关提起公益诉讼的理论基础之一。如何界定“公共利益”这... 详细信息

在个人信息保护领域,检察公益诉讼作为私法、监管、刑事制裁的重要补充,承担着保护不特定多数人的个人信息权益的重要功能与作用。“国家辅助性理论”是作为公共利益代表的检察机关提起公益诉讼的理论基础之一。如何界定“公共利益”这一典型的不确定法律概念,是公益诉讼的核心。在已有实践中,检察民事公益诉讼虽然已实现一定公益诉讼目标,但仍存在自身定位模糊、受案范围较为局限等问题,故此应进一步拓展关于敏感个人信息保护、可能引发数据风险的违法个人信息处理以及未成年、老年人等重点群体领域的公益诉讼。在《检察公益诉讼法》呼之欲出之际,检察公益诉讼应在自身定位、公共利益的识别与发现、取证优势、起诉顺位、特殊群体的权益维护等多方面再梳理,进而更好保护不特定多数人的个人信息权益和社会公共利益。

关键词：个人信息保护民事公益诉讼检察公益诉讼社会公共利益起诉顺位

Critical Solvation Structures Arrested Active Molecules for Reversible Zn Electrochemistry

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Nano-Micro Letters 2024年第8期16卷 64-78页

作者： Junjie Zheng Bao Zhang Xin Chen Wenyu Hao jia yao Jingying Li Yi Gan Xiaofang Wang Xingtai Liu Ziang Wu Youwei Liu Lin Lv Li Tao Pei Liang Xiao Ji Hao Wang Houzhao Wan Hubei Yangtze Memory Laboratories Wuhan 430205People’s Republic of China Hubei Key Laboratory of Micro‑Nanoelectronic Materials and Devices School of MicroelectronicsHubei UniversityWuhan 430062People’s Republic of China School of Physical and Mathematical Sciences Nanyang Technological UniversitySingapore 637371Singapore School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074People’s Republic of China Institute of Optoelectronics Technology China Jiliang UniversityHangzhou 310018People’s Republic of China

Aqueous Zn-ion batteries(AZIBs)have attracted increasing attention in next-generation energy storage systems due to their high safety and ***,the side reactions,dendrites and hydrogen evolution effects at the zinc anode interface in aqueous electrolytes seriously hinder the application of aqueous zinc-ion ***,we report a critical solvation strategy to achieve reversible zinc electrochemistry by introducing a small polar molecule acetonitrile to form a“catcher”to arrest active molecules(bound water molecules).The stable solvation structure of[Zn(H_(2)O)_(6)]^(2+)is capable of maintaining and completely inhibiting free water ***[Zn(H_(2)O)_(6)]^(2+)is partially desolvated in the Helmholtz outer layer,the separated active molecules will be arrested by the“catcher”formed by the strong hydrogen bond N-H bond,ensuring the stable desolvation of Zn^(2+).The Zn||Zn symmetric battery can stably cycle for 2250 h at 1 mAh cm^(-2),Zn||V_(6)O_(13) full battery achieved a capacity retention rate of 99.2%after 10,000 cycles at 10 A g^(-1).This paper proposes a novel critical solvation strategy that paves the route for the construction of high-performance AZIBs.

关键词： Zinc-ion battery Critical solvation Helmholtz layer Arrest active molecule Reversible zinc anode

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人工智能应用如何影响企业创新宽度?

财经问题研究 2024年第2期 38-50页

作者：王钰唐要家浙江财经大学经济学院浙江杭州310018

人工智能是引领新一轮科技革命和产业变革的重要驱动力,如何充分释放人工智能促进创新和经济高质量发展的潜力是当前的重要课题。本文基于2011—2019年中国沪深A股制造业上市公司数据,采用多维固定效应模型实证研究了人工智能应用对企... 详细信息

人工智能是引领新一轮科技革命和产业变革的重要驱动力,如何充分释放人工智能促进创新和经济高质量发展的潜力是当前的重要课题。本文基于2011—2019年中国沪深A股制造业上市公司数据,采用多维固定效应模型实证研究了人工智能应用对企业创新宽度的影响及其作用机制。研究结果显示:人工智能应用能显著拓展企业创新宽度;人工智能应用对企业创新宽度的影响在中小企业、市场竞争力强、融资约束小和高科技行业的企业更明显;人工智能应用通过提高企业研发成功率、提升企业运营效率和增强企业竞争优势拓展企业创新宽度;人工智能应用滞后则会制约企业拓展创新宽度。充分释放人工智能应用促进高质量创新潜力的政策重点是:构建人工智能应用拓展企业创新宽度的创新生态,形成人工智能应用驱动创新的市场环境和政策环境,增强企业技术迭代能力以实现可持续创新。

关键词：人工智能应用企业创新宽度研发成功率运营效率竞争优势

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“雅舞”称名考述与中古礼乐观念

北京舞蹈学院学报 2024年第2期168卷 40-47页

作者：姚家欣山东大学文学院济南250100

郭茂倩言“雅舞”为“郊庙、朝飨所奏文武二舞”。但先唐文献所见之“雅舞”其实并未如此明确,而是一种泛称。这是由于长期以来诗、乐、舞三位一体的礼乐观已成为文化惯性,不为人所察;同时又受杂乐舞流行影响,官方致力于雅化杂乐舞。事... 详细信息

郭茂倩言“雅舞”为“郊庙、朝飨所奏文武二舞”。但先唐文献所见之“雅舞”其实并未如此明确,而是一种泛称。这是由于长期以来诗、乐、舞三位一体的礼乐观已成为文化惯性,不为人所察;同时又受杂乐舞流行影响,官方致力于雅化杂乐舞。事实上“雅舞”离不开“雅乐”,中古礼乐制度的建构促进了“雅乐”观念的成熟,也催化了“雅舞”从“雅乐”体系中的分立。宋元及之后的学者进一步完善“雅舞”的文武体系,细致辨析“雅舞”的出现时间和古今舞容,并有意识地提高雅乐舞辞的文学地位。考察“雅舞”在历史文献中的称名演变,具有礼乐观念、舞蹈史料学等方面的多重意义。

关键词：雅舞雅乐礼乐观念诗乐舞一体文学