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Investigating the impact of dynamic structural changes of Au/rutile catalysts on the catalytic activity of CO oxidation

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Carbon Energy 2024年第4期6卷 222-232页

作者： Xiaochun Hu Qianwenhao Fan Mingwu Tan Yuqing Luo Xianyue Wu Manoel Y.Manuputty Jie Ding Tej S.Choksi Markus Kraft rong xu Zhiqiang Sun Wen Liu School of Energy Science and Engineering Central South UniversityChangshaChina School of Chemistry Chemical Engineering and BiotechnologyNanyang Technological UniversitySingaporeSingapore Cambridge Centre for Advanced Research and Education SingaporeSingapore Institute of Sustainability for Chemicals Energy and EnvironmentJurong IslandSingapore College of Chemistry and Chemical Engineering Central South UniversityChangshaChina Department of Chemical Engineering and Biotechnology University of CambridgeCambridgeUK

The surface properties of oxidic supports and their interaction with the supported metals play critical roles in governing the catalytic activities of oxide‐supported metal *** metals are supported on reducible oxides,dynamic surface reconstruction phenomena,including strong metal–support interaction(SMSI)and oxygen vacancy formation,complicate the determination of the structural–functional relationship at the active ***,we performed a systematic investigation of the dynamic behavior of Au nanocatalysts supported on flame‐synthesized TiO_(2),which takes predominantly a rutile phase,using CO oxidation above room temperature as a probe *** analysis conclusively elucidated a negative correlation between the catalytic activity of Au/TiO_(2) and the oxygen vacancy at the Au/TiO_(2) *** the reversible formation and retracting of SMSI overlayers have been ubiquitously observed on Au/TiO_(2) samples,the catalytic consequence of SMSI remains *** functional theory suggests that the electron transfer from TiO_(2) to Au is correlated to the presence of the interfacial oxygen vacancies,retarding the catalytic activation of CO oxidation.

关键词： CO oxidation electronic metal-support interactions flame‐synthesis metal-support interactions oxygen vacancy strong metal-support interaction

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Energy-efficient intermittent liquid heating of lithium-ion batteries in extreme cold using phase change materials

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Science China Technological Sciences 2024年第11期67卷 3450-3464页

作者： LI Kaixuan ZHANG JingShu YAO XiaoLe HUANG ZiZe LI WenLong ju Xing xu Chao Key Laboratory of Power Station Energy Transfer Conversion and System of MOE North China Electric Power University

The electrochemical performance of lithium-ion batteries significantly deteriorates in extreme cold. Thus, to ensure battery safety under various conditions, various heating and insulation strategies are implemented. The present study proposes a hybrid heating approach combining active heating with passive insulation. Conceptual experiments were conducted to investigate the effects of phase change materials(PCMs), inlet water temperature, and intermittent pump startup strategies on battery performance. The obtained experimental results demonstrate that low temperatures lead to increased electrochemical impedance and reduced charge–discharge capacity in batteries. Notably, charge transfer resistance of 162 mΩ was observed at -30℃. Herein,the developed PCM-based battery heating system effectively extended the operational capacity of batteries in cold driving conditions and maintained battery warmth by leveraging the superior heat storage capability of the PCM. Additionally, after the switch off of the heating system, the charge capacity of the battery exceeded 80% owing to latent heat. The use of an intermittent heating strategy not only allowed to conserve energy but also maintained adequate heat storage within the battery module. At -30℃, this strategy enhanced the power efficiency of the cooling system by 35.94% with a reduction in capacity of only 0.8%compared to the continuous strategy.

关键词： PCM liquid heating heating strategy lithium-ion battery low energy consumption extreme cold environment

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推进大中小学思政课一体化建设:循根本、强实践、求创新

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思想理论教育导刊 2024年第3期 11-18页

作者：徐蓉同济大学马克思主义学院

伴随着思政课建设内涵式发展对大中小学思政课一体化建设不断提出的新要求,不同学段的思政课建设应从时代新人的接续培养出发凝聚人才培养的合力,从明确课程目标出发遵循学生认知发展的规律,从统筹课程内容建设出发加大教研沟通力度,为... 详细信息

伴随着思政课建设内涵式发展对大中小学思政课一体化建设不断提出的新要求,不同学段的思政课建设应从时代新人的接续培养出发凝聚人才培养的合力,从明确课程目标出发遵循学生认知发展的规律,从统筹课程内容建设出发加大教研沟通力度,为此,既需要以鲜明的实践观点引领建设行动,也需要以强烈的问题意识直面建设瓶颈,还需要构建有效的协同机制来提升建设格局。在新的环境条件作用下,不断总结经验巩固已有成效,为高质量推进一体化建设探索新质、新域、新略,创造新的可能性,是办好思政课的应有姿态。

关键词：思政课一体化根本遵循实践逻辑创新发展

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Determination of total flavonoids content in buckwheat and inhibition of α-amylase activity

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Journal of Polyphenols 2024年第3期6卷 98-105页

作者： Huijing Chao rong Yang Ming Yang Beijie xu xu Zhao Faculty of Functional Food and Wine Shenyang Pharmaceutical UniversityShenyang 110016China

Diabetes is one of the most difficult chronic diseases to cure in the world,which seriously affects people’s health and quality of *** in buckwheat can regulate blood glucose levels by inhibitingα-amylase ***,sweet buckwheat produced in Inner Mongolia was used as the research object,and buckwheat fl avonoids were extracted by ultrasonic-assisted extraction *** fl avonoids content was determined by ultraviolet-visible *** acarbose as the positive control,the inhibition test ofα-amylase was carried out by DNS colorimetry to study the inhibition behavior of fl avonoids onα-amylase *** results showed that the extraction process of flavonoids was stable and reliable,and the established method for the determination of flavonoids was simple,accurate and *** total flavonoids content of buckwheat samples was 2.706 mg/g,buckwheat total fl avonoids extraction solution had an inhibitory eff ect onα-amylase,and its median inhibition concentration(IC_(50))was 38.53 mg/*** results of this experiment provide a technical reference for the development and utilization of fl avonoids in Inner Mongolia sweet buckwheat,and provide a theoretical reference for the development and application of flavonoid-rich hypoglycemic food.

关键词： buckwheat total flavonoids content α-amylase activity inhibition

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思想政治教育学研究方法的演进与走向

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马克思主义理论学科研究 2024年第6期10卷 108-116页

作者：徐蓉同济大学马克思主义学院上海200092

思想政治教育学研究方法自学科专业创建以来一直备受学界关注,作为服务于学科研究的知识体系、思维方式和行动准则,思想政治教育学研究方法在多年的学科建设发展中有着特定的生成逻辑,经历了由简单到复杂、由单一到多样、由分散到综合... 详细信息

思想政治教育学研究方法自学科专业创建以来一直备受学界关注,作为服务于学科研究的知识体系、思维方式和行动准则,思想政治教育学研究方法在多年的学科建设发展中有着特定的生成逻辑,经历了由简单到复杂、由单一到多样、由分散到综合的逐步进阶过程,但其在呈现一定特点与发展趋势的同时也表现出可以进一步拓展的空间。深入研究40年来思想政治教育学研究方法的演进与走向,立足于社会发展、学科建设对思想政治教育学研究的基础性、前沿性问题提出的新要求,着力加强学科方法论意识培育、推进方法论体系构建和研究方法的不断创新,是提升学科研究质量和发展水平的必由之路。

关键词：思想政治教育学研究方法生成逻辑发展路向

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Neutrophil-to-lymphocyte ratio associated with renal function in type 2 diabetic patients

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World Journal of Clinical Cases 2024年第14期12卷 2308-2315页

作者： Jin-Li Gao jue Shen Li-Ping Yang Li Liu Kai Zhao Xiao-rong Pan Lei Li Ji-Ji xu Department of Prevention and Health Care Community Health Service Center of Miaohang TownShanghai 200443China Department of Prevention and Health Care Community Health Service Center of Songnan TownShanghai 200434China Department of General Practice Community Health Service Center of Songnan TownShanghai 200434China Department of Administrative Community Health Service Center of Songnan TownShanghai 200434China

BACKGROUND Type 2 diabetes mellitus(T2DM)is a leading risk factor for the development and progression of chronic kidney disease(CKD).However,an accurate and con-venient marker for early detection and appropriate management of CKD in in-dividuals with T2DM is *** studies have demonstrated a strong correlation between the neutrophil-to-lymphocyte ratio(NLR)and ***-theless,the predictive value of NLR for renal damage in type 2 diabetic patients remains *** study included 1040 adults aged 65 or older with T2DM from Shanghai's Community Health Service *** total number of neutrophils and lym-phocytes was detected,and NLR levels were *** was defined as an estimated glomerular filtration rate≤60 mL/min/1.73 m².Participants were di-vided into four groups based on NLR *** clinical data and biochemical characteristics were compared among groups.A multivariate logistic regression model was used to analyze the association between NLR levels and *** Significant differences were found in terms of sex,serum creatinine,blood urea nitrogen,total cholesterol,and low-density lipoprotein cholesterol among patients with T2DM in different NLR groups(Pjustment for important clinical and pathological parameters(P=0.0001,odds ratio=1.41,95%confidence intervals:1.18-1.68).CONCLUSION An elevated NLR in patients with T2DM is associated with higher prevalence of CKD,suggesting that it could be a marker for the detection and evaluation of diabetic kidney disease.

关键词： Type 2 diabetes mellitus Neutrophil-to-lymphocyte ratio Chronic kidney disease Logistic regression Diabetes mellitus

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Unravelling biosynthesis and biodegradation potentials of microbial dark matters in hypersaline lakes

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Environmental Science and Ecotechnology 2024年第4期20卷 177-188页

作者： Zhiguang Qiu Yuanyuan Zhu Qing Zhang xuejiao Qiao rong Mu Zheng xu Yan Yan Fan Wang Tong Zhang Wei-Qin Zhuang Ke Yu School of Environment and Energy Peking University Shenzhen Graduate SchoolShenzhen518055China AI for Science(AI4S)-Preferred Program Peking UniversityShenzhen518055China Southern University of Sciences and Technology Yantian Hospital Shenzhen518081China Institute of Biomedicine and Biotechnology Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055China State Key Laboratory of Isotope Geochemistry CAS Center for Excellence in Deep Earth ScienceGuangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou510640China School of Atmospheric Sciences Sun Yat-sen UniversitySouthern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai519082China Department of Civil Engineering University of Hong Kong999077Hong KongChina Department of Civil and Environmental Engineering Faculty of EngineeringUniversity of AucklandNew Zealand

Biosynthesis and biodegradation of microorganisms critically underpin the development of biotechnology,new drugs and therapies,and environmental ***,most uncultured microbial species along with their metabolic capacities in extreme environments,remain *** we unravel the metabolic potential of microbial dark matters(MDMs)in four deep-inland hypersaline lakes in Xinjiang,*** metagenomic binning,we uncovered a rich diversity of 3030 metagenomeassembled genomes(MAGs)across 82 phyla,revealing a substantial portion,2363 MAGs,as previously unclassified at the genus *** unknown MAGs displayed unique distribution patterns across different lakes,indicating a strong correlation with varied physicochemical *** analysis revealed an extensive array of 9635 biosynthesis gene clusters(BGCs),with a remarkable 9403 being novel,suggesting untapped biotechnological ***,some MAGs from potentially new phyla exhibited a high density of these *** biosynthesis,our study also identified novel biodegradation pathways,including dehalogenation,anaerobic ammonium oxidation(Anammox),and degradation of polycyclic aromatic hydrocarbons(PAHs)and plastics,in previously unknown microbial *** findings significantly enrich our understanding of biosynthesis and biodegradation processes and open new avenues for biotechnological innovation,emphasizing the untapped potential of microbial diversity in hypersaline environments.

关键词： Biosynthesis Biodegradation Hypersaline lakes Metagenome-assembled genomes Microbial dark matters

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MH-STRALP:A scoring system for prognostication in patients with upper gastrointestinal bleeding

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World Journal of Gastrointestinal Surgery 2024年第3期16卷 790-806页

作者： jun-Nan Hu Fei xu Ya-rong Hao Chun-Yan Sun Kai-Ming Wu Yong Lin Lan Zhong Xin Zeng Department of Gastroenterology Shanghai East HospitalTongji University School of MedicineShanghai 200120China Department of Gastroenterology Shanghai Changzheng HospitalNavy Military Medical UniversityShanghai 200003China

BACKGROUND Upper gastrointestinal bleeding(UGIB)is a common medical emergency and early assessment of its outcomes is vital for treatment *** To develop a new scoring system to predict its *** In this retrospective study,692 patients with UGIB were enrolled from two cen-ters and divided into a training(n=591)and a validation cohort(n=101).The clinical data were collected to develop new prognostic prediction *** en-dpoint was compound outcome defined as(1)demand for emergency surgery or vascular intervention,(2)being transferred to the intensive care unit,or(3)death during *** models’predictive ability was compared with previously esta-blished scores by receiver operating characteristic(ROC)*** Totally 22.2%(131/591)patients in the training cohort and 22.8%(23/101)in the validation cohort presented poor *** on the stepwise-forward Lo-gistic regression analysis,eight predictors were integrated to determine a new post-endoscopic prognostic scoring system(MH-STRALP);a nomogram was de-termined to present the *** with the previous scores(GBS,Rock-all,ABC,AIMS65,and PNED score),MH-STRALP showed the best prognostic prediction ability with area under the ROC curves(AUROCs)of 0.899 and 0.826 in the training and validation cohorts,*** to the calibration cur-ve,decision curve analysis,and internal cross-validation,the nomogram showed good calibration ability and net clinical benefit in both *** removing the endoscopic indicators,the pre-endoscopic model(pre-MH-STRALP score)was ***,the pre-MHSTRALP score showed better predictive value(AUROCs of 0.868 and 0.767 in the training and validation cohorts,respectively)than the other pre-endoscopic *** The MH-STRALP score and pre-MH-STRALP score are simple,convenient,and accurate tools for prognosis prediction of UGIB,and may be applied for early decision on its management strategies.

关键词： Upper gastrointestinal bleeding Prognosis prediction Retrospective study Nomogram Post-endoscopic model Pre-endoscopic model

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Continuous wave and active Q-switched operation of Watt-level LED-pumped two-rod Nd,Ce:YAG laser

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Chinese Physics B 2024年第7期33卷 361-366页

作者：沈建平芦鹏徐少聪江容容陈阳陈亮邢凤阳 College of Electronic and Optical Engineering&College of Flexible Electronics Nanjing University of Posts and TelecommunicationsNanjing 210023China

A high-performance LED-side-pumped two-rod Nd,Ce:YAG laser with continuous-wave(CW) and acousto–optical(A-O) Q-switched operation is demonstrated in this work. A symmetrically shaped flat–flat cavity with two identical LEDside-pumped laser modules is employed for power scalability. In the CW regime, the maximum output average power of laser at 1064 nm is 4.41 W, corresponding to a maximum optical conversion efficiency of 5.3% and a slope efficiency is 12.4%. In the active Q-switched regime, the pulse energy of laser reaches as high as 0.89 m J at a repetition rate of 800 Hz with a pulse width of 457.2 ns, the corresponding highest peak output power is 1.94 k W and the M~2 factor is measured to be about 8.8. To the best of the authors' knowledge, this is the first demonstration and the highest performance of a CW LED-side-pumped two-rod laser Nd,Ce:YAG with Watt-level output reported so far.

关键词： Watt-level LED-pumped CW Nd Ce:YAG actively Q-switched operation

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Personalized treatment of well-differentiated gastric neuroendocrine tumors based on clinicopathological classification and grading:A multicenter retrospective study

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Chinese Medical Journal 2024年第6期137卷 720-728页

作者： ju Huang Huimin Liu Dekun Yang Tianming xu Jing Wang Jingnan Li Department of Gastroenterology Peking Union Medical College HospitalChinese Academy of Medical SciencesPeking Union Medical CollegeBeijing 100730China Key Laboratory of Gut Microbiota Translational Medicine Research Chinese Academy of Medical SciencesBeijing 100730China Department of Gastroenterology Affiliated Yantai Yuhuangding Hospital of Qingdao University Medical CollegeYantaiShandong 264000China Department of Gastroenterology Beijing Zhong-Neng-Jian HospitalBeijing 102401China

Background:The incidence of well-differentiated gastric neuroendocrine tumors(G-NET)is increasing annually,and while they have a good prognosis and low mortality rate,their high recurrence rate makes treatment options *** study aims to determine the relationship between individualized treatment plans and the recurrence of ***:We performed a multicenter,retrospective study of 94 patients with highly differentiated G-NET and treated at Peking Union Medical College Hospital,Yantai Yuhuangding Hospital,and Beijing Zhong-Neng-Jian Hospital from November 2015 to September *** factors for recurrence of G-NETs were investigated using chi-squared test and multifactorial logistic regression ***:After a median follow-up of 49 months,the overall recurrence rate among the 94 G-NET patients was 14%(13/94).The recurrence rates of endoscopic mucosal resection(EMR),endoscopic submucosal dissection(ESD),somatostatin analog(SSA)therapy,and surgery were 43%(6/14),10%(5/49),5%(1/22),and 11%(1/9),***-treatment recurrence rates were significantly different(P=0.014)among four treatments(EMR,ESD,SSA,and surgery),and further subgroup comparisons revealed lower recurrence rates in the ESD and SSA groups than in the EMR *** the second month onward,SSA therapy considerably reduced the gastrin levels from 1081.0(571.5,2472.8)pg/mL to 461.5(255.3,795.0)pg/mL(Z=-3.521,P<0.001).Both chi-squared test and multifactorial logistic regression analysis suggested that among the clinicopathological parameters studied,only the pre-treatment gastrin level(P=0.018 and 0.005)and the type of treatment(P=0.014 and 0.017)were significantly associated with G-NET ***:Individualized treatment strategies may reduce the risk of relapse after G-NET ***-term SSA therapy may be a secure and efficacious treatment option for type 1 G-NET with more than six lesions,and it substantially decreases the incidence of post-treatment rec

关键词： Well-differentiated G-NET Serum gastrin Personalized treatment Endoscopic submucosal dissection Endoscopic mucosal resection Somatostatin analog therapy Surgical resection Recurrence

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