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MoS2 as a cocatalyst applied in advanced oxidation processes for enhancing degradation of organic pollutants: a review

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Tungsten 2024年第3期6卷 473-487页

作者： Ming-Hao fan Cong-Hui Wang Xiang Yu Jun Ding Ao-Qi Xiao yue Li Wei-Ya Huang School of Material Science and Engineering Henan Polytechnic University School of Chemical and Printing-Dyeing Engineering Henan International Joint Laboratory of Rare Earth Composite Materials Henan University of Engineering School of Chemistry and Chemical Engineering Jiangxi University of Science and Technology Department of Chemical and Environmental Engineering University of Cincinnati

Fenton technology,as a typical advanced oxidation processes（AOPs）,can generate reactive oxygen species（ROS） of strong oxidation capacity to degrade organic pollutants,which has attracted wide ***,it is accompanied by the slow Fe3+/Fe2+cycle rate,easy to generate iron sludge and so ***,it has been proven that the inorganic cocatalysts represented by MoS2can effectively solve the above ***,MoS2can accelerate the activation of peroxy mono sulfate（PMS） and peroxodisulfate（PDS） by Fe2+.In this paper,MoS2as the cocatalyst in H2O2+Fe2+,PMS+Fe2+and PDS+Fe2+were comprehensively ***,the cycling processes of Fe3+/Fe2+in different systems,the cocatalytic effect of MoS2by the exposed active sites,the ROS generation mechanism as well as the microscopic mechanism during the reaction were elaborated *** results indicate that the reductive active sites on the surface of MoS2can promote the regeneration of Fe2+through the cycle between Fe3+/Fe2+and Mo4+/Mo5+/Mo6+.Thus,ROS such as ·OH,SO4·-and1O2with strong oxidizing property can be produced to improve the degradation efficiency of organic *** last,the challenges and developments of MoS2cocatalysts in AOPs for practical applications were *** review contributes to a deeper understanding of the cocatalytic effect of two-dimensional metal sulfides in AOPs and facilitates their industrial application.

关键词： Cocatalyst Fenton reaction Degradation of organic pollutant Molybdenum disufide Reactive oxygen species

Research on Pulsar Time Steered Atomic Time Algorithm Based on DPLL

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Research in Astronomy and Astrophysics 2024年第3期24卷 237-248页

作者： Ze-Hao Zheng Yang Liu Dan Shen fan Feng Jiu-Long Liu yue-Xin Ma Xiang-Wei Zhu School of Electronic and Communication Engineering Sun Yat-sen UniversityShenzhen 518107China School of Aeronautics and Astronautics Sun Yat-sen UniversityShenzhen 518107China School of Systems Science and Engineering Sun Yat-sen UniversityGuangzhou 510275China

In today’s society,there is a wide demand for high-precision and high-stability time service in the fields of electric power,communication,transportation and *** present,the time standard in various countries is mainly based on atomic clocks,but the frequency drift of atomic clocks will affect the long-term stability *** with atomic clocks,millisecond pulsars have better long-term stability and can complement with the excellent short-term stability of atomic *** order to improve the long-term stability of the atomic timescale,and then improve the timing accuracy,this paper proposes an algorithm for steering the atomic clock ensemble(ACE)by ensemble pulsar time(EPT)based on digital phase locked loop(DPLL).First,the ACE and EPT are generated by the ALGOS algorithm,then the ACE is steered by EPT based on DPLL to calibrate the long-term frequency drift of the atomic clock,so that the generated steered atomic time follows both the short-term stability characteristics of ACE and the long-term stability characteristics of EPT,and finally,the steered atomic time is used to calibrate the local cesium *** experimental results show that the long-term stability of atomic time after steering is improved by 2 orders of magnitude compared with that before steering,and the daily drift of a local cesium clock after calibration is less than 9.47 ns in 3 yr,3 orders of magnitude higher than that before calibration on accuracy.

关键词： (stars) pulsars general-time-methods data analysis-instabilities

Association between composite dietary antioxidant index and stroke among individuals with diabetes

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World Journal of Diabetes 2024年第8期15卷 1742-1752页

作者： Hong-Qiang Zhang Jie Shi Tong yue Jia-Hao Weng Xu-Lin Wang Hao Wang Xiao-Yu Su Xue-ying Zheng Si-Hui Luo Yu Ding Chao-fan Wang Department of Cardiology Centre for Leading Medicine and Advanced Technologies of IHMThe First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230001Anhui ProvinceChina Department of Endocrinology Centre for Leading Medicine and Advanced Technologies of IHMThe First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230001Anhui ProvinceChina Graduate School Bengbu Medical CollegeBengbu 233030Anhui ProvinceChina Department of Endocrinology and Metabolism The Third Affiliated Hospital of Sun Yat-sen UniversityGuangdong Provincial Key Laboratory of DiabetologyGuangzhou 510630Guangdong ProvinceChina

BACKGROUND Recent research has underscored the potentially protective role of dietary antioxidants against chronic conditions,such as cardiovascular diseases and *** composite dietary antioxidant index(CDAI),which reflects the overall intake of key dietary antioxidants,has been identified as a crucial metric for exploring this *** previous research has shown a negative correlation between CDAI levels and stroke risk in prediabetic individuals,there remains a substantial gap in understanding this association among individuals with diabetes,who are at an inherently greater risk for cerebrovascular *** To investigate the association between CDAI and stroke risk in individuals with *** Using a cross-sectional study design,this investigation analyzed data from the National Health and Nutrition Examination Survey spanning from 2003 to 2018 that included 6735 participants aged over 20 years with *** CDAI was calculated from 24-h dietary recalls to assess intake of key antioxidants:Vitamins A,C,and E;carotenoids;selenium;and *** logistic regression and restricted cubic spline analysis were used to rigorously examine the relationship between CDAI and stroke *** The participant cohort,with an average age of 59.5 years and a slight male majority,reflected the broader demographic characteristics of individuals with *** analysis revealed a strong inverse relationship between CDAI levels and stroke ***,those in the highest quintile of CDAI demonstrated a 43%lower prevalence of stroke compared to those in the lowest quintile,even after adjustments for various *** finding not only highlights the negative association between CDAI and stroke risk but also underscores the significant potential of antioxidant-rich diets in reducing stroke prevalence among patients with *** Our findings suggested that CDAI was inversely associated with stroke prevalence among pa

关键词： Stroke Diabetes Composite dietary antioxidant index National Health and Nutrition Examination Survey Crosssectional study

Clinical value of oral contrast-enhanced ultrasonography in diagnosis of gastric tumors

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World Journal of Gastrointestinal Oncology 2024年第1期16卷 110-117页

作者： Chuan-Yu Wang Xiao-Jing fan Fei-Liang Wang yue-yue Ge Zhao Cai Wei Wang Xin-Ping Zhou Jun Du De-Wei Dai Department of Ultrasound Medicine Beijing HospitalBeijing 100005China Department of Gastroscopy Beijing HospitalBeijing 100005China Department of General Surgery Beijing HospitalBeijing 100005China Department of Pathology Beijing HospitalBeijing 100005China

BACKGROUND The incidence of gastric cancer remains high,and it is the sixth most common cancer and the fourth leading cause of cancer deaths *** contrastenhanced ultrasonography is a simple,non-invasive,and painless method for the diagnosis of gastric *** To explore the diagnostic value of oral contrast-enhanced ultrasonography for the detection of gastric *** The screening results based on oral contrast-enhanced ultrasonography and electronic gastroscopy were compared with those of the postoperative pathological *** Among 42 patients with gastric tumors enrolled in the study,the diagnostic accordance rate was 95.2%for oral contrast-enhanced ultrasonography(n=40)and 90.5%for electronic gastroscopy(n=38)compared with postoperative pathological *** Kappa value of consistency test with pathological findings was 0.812 for oral contrast-enhanced ultrasonography and 0.718 for electronic gastroscopy,and there was no significant difference between them(P=0.397).For the TNM staging of gastric tumors,the accuracy rate of oral contrast enhanced ultrasonography was 81.9%for the overall T staging and 50%,77.8%,100%,and 100%for T1,T2,T3,and T4 staging,*** sensitivity and specificity were both 100%for stages T3 and *** diagnostic accuracy rate of oral contrast-enhanced ultrasonography was 93.8%,80%,100%,and 100%for stages N0,N1-N3,M0,and M1,*** The accordance rate of qualitative diagnosis by oral contrast-enhanced ultrasonography is comparable to that of gastroscopy,and it could be used as the preferred method for the early screening of gastric tumors.

关键词： Oral contrast-enhanced ultrasonography Gastric tumor Electronic gastroscopy Controlled study Pathological examination Diagnosis

Facile preparation of Fe/N-based biomass porous carbon composite towards enhancing the thermal decomposition of DAP-4

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Defence Technology（防务技术） 2024年第1期31卷 288-294页

作者： Er-hai An Xiao-xia Li Cun-juan Yu ying-xin Tan Zi-jun fan Qing-xia Li Peng Deng Xiong Cao School of Environment and Safety Engineering North University of ChinaTaiyuan030051PR China College of Safety and Emergency Management Engineering Taiyuan University of Science and TechnologyTaiyuan030024PR China

Fe/N-based biomass porous carbon composite(Fe/N-p Carbon) was prepared by a facile high-temperature carbonization method from biomass,and the effect of Fe/N-p Carbon on the thermal decomposition of energetic molecular perovskite-based material DAP-4 was *** porous carbonaceous materials was considered as the micro/nano support layers for in situ deposition of Fe/N ***/Np Carbon was prepared simply by the high-temperature carbonization *** was found that it showed the inherent catalysis properties for thermal decomposition of *** heat release of DAP-4/Fe/N-p Carbon by DSC curves tested had increased slightly,compared from DAP-4/Fe/N-p *** decomposition temperature peak of DAP-4 at the presence of Fe/N-p Carbon had reduced by 79°C from384.4°C(pure DAP-4) to 305.4°C(DAP-4/Fe/N-p Carbon-3).The apparent activation energy of DAP-4thermal decomposition also had decreased by 29.1 J/*** possible catalytic decomposition mechanism of DAP-4 with Fe/N-p Carbon was proposed.

关键词： Biomass materials Porous carbon DAP-4 Thermal decomposition Facile method

Role of texture before rolling: a research based on texture and magnetic properties of 4.5 wt.% Si non-oriented electrical steel

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Journal of Iron and Steel Research International 2024年第8期31卷 1973-1986页

作者： Yu-fan Wang Guo-qing Zu Shi-cheng Sun ying Han Wei-wei Zhu Hui Wu Yu Zhao Xu Ran Key Laboratory of Advanced Structural Materials of Ministry of Education Changchun University of TechnologyChangchun 130012JilinChina CRRC Changchun Railway Vehicles Co. Ltd.Changchun 130000JilinChina School of Metallurgy Northeastern UniversityShenyang 110819LiaoningChina School of Mechanical MaterialsMechatronic and Biomedical EngineeringUniversity of WollongongWollongongNSW 2522Australia

The evolution of microstructure,texture,and magnetic properties with random texture,near-copper texture,weak near-cube texture,and strong λ fiber(/ND(normal direction))before rolling of non-oriented electrical steel was *** recrystallized hot bands with different textures but similar grain sizes were prepared by pre-annealing at low-temperature and high-temperature normalization *** was observed that the final annealed products exhibited similar recrystallized *** contrast,the final annealed product with more 2 fiber before rolling exhibited a stronger cube *** the fiber before rolling becoming stronger,the proportion of(111)deformed matrices became larger,which could be observed in the early recrystallization *** overwhelmingly dominant 2 orientation nuclei are formed in the(111)deformed matrix and become the dominant ***,the best magnetic properties are obtained in the products with strong 2 fiber before rolling,corresponding to the strong cube texture and low anisotropyparameter.

关键词： Texture before rolling Non-oriented electrical steel-Nucleation Grain growth Magnetic property

Alteration of ascending colon mucosal microbiota in patients after cholecystectomy

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World Journal of Gastrointestinal Surgery 2024年第8期16卷 2436-2450页

作者： Miao-Yan fan Qiao-Li Jiang Meng-Yan Cui Meng-Qi Zhao Jing-Jing Wang ying-ying Lu Department of Gastroenterology Jiading Branch of Shanghai General HospitalShanghai Jiao Tong University School of MedicineShanghai 201803China Shanghai Key Laboratory of Pancreatic Diseases Institute of Translational MedicineShanghai General HospitalShanghai Jiao Tong University School of MedicineShanghai 201620China Department of Gastroenterology Shanghai General HospitalShanghai Jiao Tong University School of MedicineShanghai 201620China

BACKGROUND Cholecystectomy is a successful treatment option for gallstones,although the inci-dence of colorectal cancer(CRC)has notably increased in post-cholecystectomy(PC)***,it remains uncertain whether the altered mucosal micro-biota in the ascending colon is *** total,30 PC patients and 28 healthy controls underwent colonoscopies to collect mucosal biopsy *** patients were divided based on their clinical ***,16S-rRNA gene sequencing was used to analyze the amplicon,alpha diversity,beta diversity,and composition of the bacterial ***-tionally,the Phylogenetic Investigation of Communities by Reconstruction of Unobserved States(PICRUSt)database,sourced from the Kyoto Encyclopedia of Genes and Genomes,was used to predict the functional capabilities of the *** PC patients were comparable with healthy ***,PC patients older than 60 years had a distinct composition compared to those under 60 years *** richness was considerably higher at the phylum level in PC ***,Parabacteroides,and Bilophila were more abundant in the PC group than in the control ***,PC patients exhibited greater enrichment in metabolic pathways,specifically those related to lipopolysaccharide biosynthesis and vancomycin group antibiotic production,than *** This study indicated that the mucosal microbiota in PC patients was altered,perhaps offering new perspectives on the treatment possibilities for CRC and diarrhea following cholecystectomy.

关键词： Post-cholecystectomy Ascending colon Mucosal Microbiota Colorectal cancer Diarrhea

Stable alkali halide vapor assisted chemical vapor deposition of 2D HfSe2 templates and controllable oxidation of its heterostructures

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Frontiers of physics 2024年第3期19卷 29-38页

作者： Wenlong Chu Xilong Zhou Ze Wang Xiulian fan Xuehao Guo Cheng Li Jianling yue fangping Ouyang Jiong Zhao Yu Zhou School of Physics Hunan Key Laboratory of Nanophotonics and DevicesCentral South UniversityChangsha 410083China State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing100190China Department of Applied Physics The Hong Kong Polytechnic UniversityKowloonHong KongChina

Two-dimensional hafnium-based semiconductors and their heterostructures with native oxides have been shown unique physical properties and potential electronic and optoelectronic ***,the scalable synthesis methods for ultrathin layered hafnium-based semiconductor laterally epitaxy growth and its heterostructure are still restricted,also for the understanding of its formation ***,we report the stable sublimation of alkali halide vapor assisted synthesis strategy for high-quality 2D HfSe_(2) nanosheets via chemical vapor ***-crystalline ultrathin 2D HfSe_(2) nanosheets were systematically grown by tuning the growth parameters,reaching the lateral size of 6‒40μm and the thickness down to 4.5 *** scalable amorphous HfO_(2)and HfSe_(2)heterostructures were achieved by the controllable oxidation,which benefited from the approximate zero Gibbs free energy of unstable 2D HfSe_(2) *** crystal structure,elemental,and time dependent Raman characterization were carried out to understand surface precipitated Se atoms and the formation of amorphous Hf−O bonds,confirming the slow surface oxidation and lattice incorporation of oxygen *** relatively smooth surface roughness and electrical potential change of HfO_(2)−HfSe_(2) heterostructures indicate the excellent interface quality,which helps obtain the high performance memristor with high on/off ratio of 105 and long retention period over 9000 *** work introduces a new vapor catalysts strategy for the synthesis of lateral 2D HfSe_(2) nanosheets,also providing the scalable oxidation of the Hf-based heterostructures for 2D electronic devices.

关键词： chemical vapor deposition HfSe_(2)−HfO_(2) nanoelectronics

Transcutaneous electrical acupoint stimulation benefits postoperative pain relief of oocyte retrieval:A randomized controlled trial

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Journal of Integrative Medicine 2024年第1期22卷 32-38页

作者： Li-ying Liu Yang Su Rong-rong Wang Yuan-yuan Lai Lei Huang Yi-ting Li Xin-yue Tao Meng-hua Su Xiao-yan Zheng Shi-chen Huang Yong-na Wu Si-yi Yu fan-rong Liang Jie Yang Acupuncture and Tuina School Chengdu University of Traditional Chinese MedicineChengdu 610000Sichuan ProvinceChina Traditional Chinese Medicine Department Sichuan Jinxin Xi’nan Women's and Children's HospitalChengdu 610000Sichuan ProvinceChina

Background Transvaginal oocyte retrieval is frequently followed by adverse events related to anesthesia and the *** research showed that transcutaneous electrical acupoint stimulation(TEAS)can relieve intraoperative pain and postoperative *** This study examined whether TEAS can alleviate pain and relieve adverse symptoms after oocyte ***,setting,participants and interventions Altogether 128 patients were randomly divided into the TEAS group and the mock TEAS *** two groups received a 30-minute-long TEAS or mock TEAS treatment that began 30 min after oocyte *** outcome measures The primary outcome was the visual analog scale(VAS)pain *** outcomes were pressure pain threshold,McGill score,pain rating index(PRI),present pain intensity(PPI),VAS stress score,VAS anxiety score,and postoperative adverse *** The baseline characteristics of the two groups were comparable(P>0.05).The VAS pain scores of the TEAS group were lower than those of the mock TEAS group at 60 and 90 min after oocyte retrieval(P0.05).The TEAS group was superior to the mock TEAS group for relieving postoperative adverse symptoms(P<0.05).Conclusion TEAS treatment can relieve postoperative pain and postoperative adverse symptoms for patients undergoing oocyte retrieval.

关键词： Transcutaneous electrical acupoint stimulation Fertilization Embryo transfer Oocyte retrieval Pain Randomized controlled trial