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Rare Metals 2024年第2期43卷 749-757页

作者： Zheng Zhao Wei-Xin Zhao Yong-Qi Zhang Mei-Sheng Cui Yong-Ke Hou Dong-Ming Chen juan-Yu Yang Zong-Yu Feng Xiao-Wei Huang National Engineering Research Center for Rare Earth Grirem Advanced Materials Co.Ltd.GRINM Group Corporation LimitedBeijing100088China Griem Hi-Tech Co.Ltd. Langfang065000China Rare Earth Functional Materials(Xiong’an)Innovation Venter Co.Ltd. Baoding071700China

The ceria-zirconia compound oxide-supported noble metal Pd(Pd@CZ)is widely used in three-way ***,the surface structure of CZ plays an important role in catalytic activity of ***,how to regulate the surface structure of CZ and clarify the structure–activity relationship is still a *** this paper,a strategy is proposed to develop high activity Pd@CZ nanocatalysts by tuning Y doping sites in *** precipitate-deposition method is developed to prepare the novel Ce_(0.485)Zr_(0.485)Y_(0.03)O_(2) composite with surface doping of Y(CZ-Y-S).In addition,the Pd@CZ-Y-S(Pd supported on CZ-Y-S)exhibits superior catalytic activity for HC,CO,and NO oxide,wherein,for CO and C_(3)H_(6) oxidation,the low-temperature activity of Pd@CZ-Y-S is still 20%higher than that of Pd@CZ-Y-b(Y bulk doping)and commercial Pd@CZ after 1000℃/4 h *** effect mechanism is further studied by density functional theory(DFT)*** with Pd@CZ-Y-b,Pd@CZ-Y-S shows the lower CO oxide reaction energy barriers due to the weaker adsorption strength of *** Y surface doping strategy could provide valuable insights for the development of highly efficient Pd@CZ catalyst with extensive applications.

关键词： Rare earth Ceria-zirconia-supported Pd Surface doping Experiment and theory Catalytic application

Evaluation of The Effectiveness of Abdominal and Vaginal b-Ultrasound in The Diagnosis of Acute Abdomen in Obstetrics and Gynecology

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Journal of Clinical and Nursing Research 2024年第4期8卷 56-60页

作者： Qiumin Li juan Chen Obstetrics Department Shaanxi Provincial People’s HospitalXi’an 710068Shaanxi ProvinceChina Ultrasound Department Shaanxi Provincial People’s HospitalXi’an 710068Shaanxi ProvinceChina

Objective: To explore the clinical effect of the combined application of abdominal and vaginal b-ultrasound in the diagnosis of acute abdomen in obstetrics and gynecology. Methods: Eighty patients admitted to our hospital from March 2023 to March 2024 were selected, all of whom were acute abdomen patients admitted to the Department of Obstetrics and Gynecology. In this study, the patients were divided into two groups. One group of 40 patients was given a simple abdominal b-ultrasound diagnosis (control group). The other group of 40 patients was given both abdominal and vaginal b-ultrasound examinations (experimental group). The diagnostic accuracy between the two groups was compared. Results: Patients in the experimental group had higher consistency rates with pathological diagnosis results in ectopic pregnancy rupture, embryonic arrest, acute pelvic inflammation, corpus luteum rupture, and intrauterine adhesions as compared to the control group. At the same time, the inspection accuracy rate of the experimental group (92.50%) was higher than that of the control group (70.00%) (P bined application of abdominal and vaginal b-ultrasound in the diagnosis of acute abdomen was of great significance in improving the accuracy of clinical diagnosis and guiding doctors to provide effective treatment.

关键词： Abdominal b-ultrasound Vaginal b-ultrasound Obstetrics and gynecology Acute abdomen Diagnostic value

Metal-metal bonds in Zintl clusters:Synthesis,structure and bonding in[Fe_(2)Sn_(4)bi_(8)]^(3-)and[Cr_(2)Sb_(12)]^(3-)

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Chinese Chemical Letters 2024年第8期35卷 558-566页

作者： Ya-Nan Yang Zi-Sheng Li Sourav Mondal Lei Qiao Cui-Cui Wang Wen-juan Tian Zhong-Ming Sun John E.McGrady State Key Laboratory of Element-Organic Chemistry Tianjin Key Lab for Rare Earth Materials and ApplicationsSchool of Materials Science and EngineeringNankai UniversityTianjin 300350China Department of Chemistry University of OxfordInorganic Chemistry LaboratoryOxfordOX13QRUnited Kingdom

We report here the synthesis and characterization of two new members of the M2 E 12 family of endohe-dral Zintl clusters,[Fe_(2)Sn_(4)bi_(8)]^(3-)and[Cr_(2)Sb_(12)]^(3-),both of which contain open-shell metal dimers encap-sulated inside a triple-decker cluster of main-group *** 75-electron[Fe_(2)Sn_(4)bi_(8)]^(3-)cluster has a D4h-symmetric structure,while[Cr_(2)Sb_(12)]^(3-),despite having the same 75-electron count,is strongly dis-torted to a geometry that resembles a CrSb_(8)crown capped by a CrSb_(4)*** structural differences between the two are driven by the increasing availability of 3d electron density in the earlier transi-tion metal,which leads,ultimately,to different electronic configurations in the two *** trends precisely mirror those observed in the ME_(10)and ME_(12)families containing a single transition metal ion.

关键词： Zintl anions Endohedral clusters Metal-metal bond Second-order Jahn-Teller effect DFT calculation

Ultra-high-rate bi anode encapsulated in 3D lignin-derived carbon framework for sodium-ion hybrid capacitors

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Rare Metals 2024年第3期43卷 1037-1047页

作者： Ze-Hua Lin Xue-Qing Qiu Xi-Hong Zu Xiao-Shan Zhang Lei Zhong Shi-Rong Sun Shu-Hua Hao Ying-juan Sun Wen-Li Zhang School of Chemical Engineering and Light Industry Guangdong University of Technology(GDUT)Guangzhou510006China Jieyang branch of Chemistry and Chemical Engineering Guangdong Laboratory(Rongjiang Laboratory) Jieyang515200China School of Advanced Manufacturing Institute of Green Chemistry and Advanced MaterialsGuangdong University of TechnologyJieyang515200China

bismuth(bi),as an alloy-based anode material,has attracted much atte ntion in the developme nt of sodiumion hybrid capacitors(SIHCs)due to its high theoretical ***,the volume expansion of the bi-based anode during the sodiation/desodiation process results in limited rate *** the present work,a porous bi-based composite was constructed by a one-step hydrothermal method,and bi was encapsulated in ligninderived nitrogen-doped porous carbon(bi@LNPC)after *** obtained bi nanoparticles could effectively adapt to the strain and shorten the diffusion distance of Na^(+).In addition,porous carbon skeleton provides a rigid conductive network for electronic ***,the assembled sodium-ion half-cell with bi@LNPC anode shows ultra-high-rate *** the current density was enhanced from 0.1 to 50 A·g^(-1),the specific capacity decreased slightly from 351.5 to 342.8 mAh·g^(-1).Even at an extremely high current density of 200 A·g^(-1),it retains 81.3%capacity retention when compared to a current density of 1 A·g^(-1).The SIHCs assembled by bi@LNPC show a high energy density of 63 Wh·kg^(-1).This work provides an effective method for developing high-rate bi anode materials for sodium-ion hybrid capacitors(SIHCs)and sodium-ion batteries(SIbs).

关键词： bismuth Lignin Sodium-ion batteries Sodium-ion hybrid capacitors Rate Porous carbon

Analysis of the Efficacy of Prenatal b-Ultrasound in Diagnosing Fetal Abnormalities

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Journal of Clinical and Nursing Research 2024年第5期8卷 47-51页

作者： juan Chen Qiumin Li Ultrasound Department Shaanxi Provincial People’s HospitalXi’an 710068ShaanxiChina Obstetrics Department Shaanxi Provincial People’s HospitalXi’an 710068ShaanxiChina

Objective:To explore the positive significance of using prenatal b-ultrasound in diagnosing fetal ***:A total of 200 pregnant women who visited Shaanxi Provincial People’s Hospital between January 2023 and January 2024 were recruited as the research *** pregnant women received prenatal examinations.A retrospective analysis was carried out to analyze the positive significance of prenatal b-ultrasound examination in the diagnosis of fetal ***:Prenatal b-ultrasound examination detected 10 cases of fetal abnormalities,with a detection rate of 5.00%.When compared with the postnatal examination results of 5.50%,the difference was insignificant(P>0.05).Moreover,comparing the fetal limb abnormalities and cardiovascular abnormalities in prenatal b-ultrasound examination and postnatal examination,one case of congenital heart disease was missed in the prenatal b-ultrasound examination,and the others were consistent with the postnatal examination results,with a coincidence rate of 90.91%,indicating a high compliance ***:Fetal abnormalities have a great impact on mothers,babies,and families,and it is particularly important to strengthen diagnosis during this *** b-ultrasound examination can improve the accuracy of diagnosis of fetal abnormalities and can be promoted in clinical practice as a basis for screening fetal abnormalities.

关键词： Prenatal b-ultrasound Fetal abnormalities Diagnostic value

Human-like adrenal features in Chinese tree shrews revealed by multi-omics analysis of adrenal cell populations and steroid synthesis

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Zoological Research 2024年第3期45卷 617-632页

作者： Jing-Hang Jiang Yi-Fu Wang Jie Zheng Yi-Ming Lei Zhong-Yuan Chen Yi Guo Ya-Jie Guo bing-Qian Guo Yu-Fang Lv Hong-Hong Wang juan-juan Xie Yi-Xuan Liu Ting-Wei Jin bi-Qi Li Xiao-Shu Zhu Yong-Hua Jiang Zeng-Nan Mo Center for Genomic and Personalized Medicine Guangxi Collaborative Innovation Center for Genomic and Personalized MedicineGuangxi Key Laboratory for Genomic and Personalized MedicineGuangxi Medical UniversityNanningGuangxi 530021China Department of Urology First Affiliated Hospital of Guangxi Medical UniversityNanningGuangxi 530021China Reproductive Medicine Center Jingmen People’s HospitalJingChu University of Technology Affiliated Central HospitalJingmenHubei 448000China School of Computer Science and Engineering Yulin Normal UniversityYulinGuangxi 537000China Collaborative Innovation Centre of Regenerative Medicine and Medical bioResource Development and Application Co-constructed by the Province and Ministry Guangxi Medical UniversityNanningGuangxi 530021China Department of Pathology Second Affiliated Hospital of Guangxi Medical UniversityNanningGuangxi 530007China Department of Obstetrics and Gynecology Second Affiliated Hospital of Guangxi Medical UniversityNanningGuangxi 530007China

The Chinese tree shrew(Tupaia belangeri chinensis)has emerged as a promising model for investigating adrenal steroid synthesis,but it is unclear whether the same cells produce steroid hormones and whether their production is regulated in the same way as in ***,we comprehensively mapped the cell types and pathways of steroid metabolism in the adrenal gland of Chinese tree shrews using single-cell RNA sequencing,spatial transcriptome analysis,mass spectrometry,and *** compared the transcriptomes of various adrenal cell types across tree shrews,humans,macaques,and *** showed that tree shrew adrenal glands expressed many of the same key enzymes for steroid synthesis as humans,including CYP11b2,CYP11b1,CYb5A,and *** analysis confirmed the production of aldosterone,cortisol,and dehydroepiandrosterone but not dehydroepiandrosterone sulfate in the tree shrew adrenal ***,genes in adrenal cell types in tree shrews were correlated with genetic risk factors for polycystic ovary syndrome,primary aldosteronism,hypertension,and related disorders in humans based on genome-wide association ***,this study suggests that the adrenal glands of Chinese tree shrews may consist of closely related cell populations with functional similarity to those of the human adrenal *** comprehensive results(publicly available at http://***:16245/scAGMap/)should facilitate the advancement of this animal model for the investigation of adrenal gland disorders.

关键词： Tree shrew Adrenal gland Dehydroepiandrosterone Genome-wide association studies Disease model

Design and synthesis of polyoxovanadate-based framework for efficient dye degradation

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Tungsten 2024年第2期6卷 447-453页

作者： Qing Lan Su-juan Jin Zheng Wang Xu-Yang Li Yan Xiong Zhuo-Cheng Wang Shan-Shan Liu Zhi-Ming Zhang Qiang Zhao Engineering Technology Research Center of Henan Province for Solar Catalysis School of Chemical and Pharmaceutical EngineeringNanyang Normal UniversityNanyang 473061China Institute of New Energy Materials&Low Carbon Technology Tianjin University of TechnologyTianjin 300384China

A new polyoxovanadate-based framework material[Cu(en)_(2)]_(4)V_(18)O_(42)(H_(2)O)·6H_(2)O(1)was designed and synthesized by hydrothermal reaction of NaVO_(3),Cu(NO_(3))_(2)·6H_(2)O and 1,2-diaminoethane(en)via carefully adjusting the pH value of the reaction *** structure of the title compound has been determined by single-crystal X-ray diff raction analysis,thermogravimetric analysis,infrared spectra and elemental *** structural analysis demonstrate the three-dimensional(3D)framework structure of compound 1,which was composed of the[V_(18)O_(42)(H_(2)O)]_(8)−({V_(18)O_(42)(H_(2)O)})anions linked by the Cu^(2+)*** 1 represents the fi rst 3D framework based on{V_(18)O_(42)(H_(2)O)}polyoxoanions and copper ***-driven degradation of residual organic pollutants in industrial wastewater is still a major problem for human *** experiments reveal that compound 1 possesses of excellent photocatalytic activity for the degradation of methylene blue and rhodamine b.

关键词： Polyoxovanadate Framework Polyoxovanadate-based framework Photocatalytic Organic pollutants

The proximity between hydroxyl and single atom determines the catalytic reactivity of Rh1/CeO_(2) single-atom catalysts

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Nano Research 2024年第1期17卷 397-406页

作者： Danfeng Wu Shuyun Zhou Congcong Du juan Li Jianyu Huang Hong-xia Shen Abhaya K.Datye Shan Jiang Jeffrey T.Miller Sen Lin Haifeng Xiong State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhou 350002China Clean Nano Energy Center State Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdao 066004China College of biology and Chemical Engineering Jiaxing UniversityJiaxing 314000China Department of Chemical&biological Engineering University of New MexicoAlbuquerqueNM 8731-0001USA Davidson School of Chemical Engineering Purdue UniversityWest LafayetteIN 47907-2100USA Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361102China Fujian Key Laboratory of Rare-earth Functional Materials Fujian Shanhai Collaborative Innovation Center of Rare-earth Functional MaterialsLongyan 366300China

The local structure of the metal single-atom site is closely related to the catalytic activity of metal single-atom catalysts(SACs).However,constructing SACs with homogeneous metal active sites is a challenge due to the surface heterogeneity of the conventional ***,we prepared two Rh1/CeO_(2)SACs(0.5Rh1/r-CeO_(2)and 0.5Rh1/c-CeO_(2),respectively)using two shaped CeO_(2)(rod and cube)exposing different facets,i.e.,CeO_(2)(111)and CeO_(2)(100).In CO oxidation reaction,the T100 of 0.5Rh1/r-CeO_(2)SACs is 120°C,while the T100 of 0.5Rh1/c-CeO_(2)SACs is as high as 200°*** in-situ CO diffuse reflectance infrared Fourier transform spectroscopy(CO-DRIFTS),we found that the proximity between OH group and Rh single atom on the plane surface plays an important role in the catalytic activity of Rh1/CeO_(2)SAC system in CO *** Rh single atom trapped at the CeO_(2)(111)crystal surface forms the Rh1(OH)adjacent species,which is not found on the CeO_(2)(100)crystal surface at room ***,during CO oxidation,the OH group far from Rh single atom on the 0.5Rh1/c-CeO_(2)disappears and forms Rh1(OH)adjacent species when the temperature is above 150°*** formation of Rh1(OH)adjacentCO intermediate in the reaction is pivotal for the excellent catalytic activity,which explains the difference in the catalytic activity of Rh single atoms on two different CeO_(2)*** formed Rh1(OH)adjacent-O-Ce structure exhibits good stability in the reducing atmosphere,maintaining the Rh atomic dispersion after CO oxidation even when pre-reduced at high temperature of 500°*** functional theory(DFT)calculations validate the unique activity and reaction path of the intermediate Rh1(OH)adjacentCO species *** work demonstrates that the proximity between metal single atom and hydroxyl can determine the formation of active intermediates to affect the catalytic performances in catalysis.

关键词： crystal plane Rh1/CeO_(2)single-atom catalyst proximity of Rh and hydroxyl coordination structure CO oxidation

基于改进分类器动态选择算法的滚珠丝杠副状态识别

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高技术通讯 2024年第4期34卷 396-405页

作者：文娟恒丰泰精密机械股份有限公司杭州310023 浙江工业大学机械工程学院温州325000

为提升滚珠丝杠副的性能状态识别精度,提出一种改进的分类器动态选择算法。该算法借助邻域成分分析(NCA),准确并自适应地定义测试样本的邻域,无需选择距离度量方式,从而更加准确地衡量多分类器系统中各子分类器对于测试样本进行正确分... 详细信息

为提升滚珠丝杠副的性能状态识别精度,提出一种改进的分类器动态选择算法。该算法借助邻域成分分析(NCA),准确并自适应地定义测试样本的邻域,无需选择距离度量方式,从而更加准确地衡量多分类器系统中各子分类器对于测试样本进行正确分类的潜力,解决了传统分类器动态选择算法精度受限于距离度量方式选择是否合适的问题。将所提出的分类器动态选择算法应用于滚珠丝杠副状态识别中,首先利用Adaboost算法离线训练反向传播(bP)神经网络集合,然后依据实时信号特征,采用改进的分类器动态选择算法从分类器集合中选取最合适的子分类器进行状态鉴定,从而实现更好的识别效果。实验结果表明,提出方法的状态识别准确率能够达到97.22%,高于bP神经网络、Adaboost与传统分类器动态选择算法,且对于不同的性能状态均有较高的识别精度。

关键词：分类器动态选择邻域成分分析(NCA) 状态识别滚珠丝杠副多分类器系统

Allosteric regulation of Keap1 by 8b-hydroxy-acyclocostunolide for the treatment of acute lung injury

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Acta Pharmaceutica Sinica b 2024年第9期14卷 4174-4178页

作者： juan Zhang Min Zhang Qi-Meng Zhu Xin-Rong Xu Yan-Li Feng Sheng Lin Feng Qiu Cheng-Peng Sun School of Chinese Materia Medic1 Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese MedicineTianjin University of Traditional Chinese MedicineTianjin 301617China Key Laboratory of Chinese Internal Medicine of Ministry of Education and beijing Dongzhimen HospitalBeijing University of Chinese MedicineBeijing 100700China

To the Editor:Acute lung injury(ALI)is a debilitating lung disease characterized by pulmonary edema,diffuse alveolar damage,and uncontrolled neutrophil *** cases of ALI can potentially lead to the development of acute respiratory distress syndrome(ARDS),which can lead to impaired respiratory function,multiorgan dysfunction,and an extremely high mortality *** may be caused by various factors,including aspiration,severe pneumonia,sepsis,trauma,fatty embolism,pancreatitis,and blood *** clinical approaches to treating ALI/ARDS include mechanical ventilation,extracorporeal membrane oxygenation(ECMO),and other supportive therapies5,***,ALI/ARDS is an urgent problem that needs to be addressed in the field of respiratory critical care and innovative mechanisms and therapies6.

关键词： Macrophage overactivation Keap1 8b-Hydroxy-a-cyclocostunolide Nrf2 Acute lung injury