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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

Enrichment characteristics of normal-pressure marine shale gas in the complex tectonic zone: a case study of the Lower Cambrian Niutitang Formation in northern Guizhou

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Journal of Earth science 2024年

作者： Wenjibin Sun Zhonghu Wu Yujun Zuo Chao Pan Hao Liu Baofeng Lan Jianyun Lin Bin Chen Qinggang Chen Guizhou Energy Industry Research Institute Co.， Ltd Mining college， Guizhou University college of Resource and Environmental Engineering， Guizhou University college of Civil Engineering， Guizhou University

The Lower Cambrian Niutitang Formation is a crucial stratum for the exploration of normal-pressure marine shale gas in southern China， with great development potential. To research the normal-pressure shale gas accumulation of the Niutitang Formation in the complex tectonic zone， the shale cores in northern Guizhou were subjected to X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM) observation， and tests were conducted to determine total organic content (TOC)， bitumen reflectance， and nitrogen isotopes. The results indicate that the equivalent vitrinite reflectance of cores varies from 2.30% to 3.73%， and the TOC content of cores varies from 3.8% to 7.8%. The total gas content of three wells in northern Guizhou is 0.5 m3/t， 0.3 m3/t， and 1.4 m3/t， respectively. The TOC content of the shale in the syncline structure is higher than that of the shale in the anticline structure. Nitrogen in shale gas originates primarily from the thermal ammoniation of organic matter， the atmosphere， and the deep crust. Shale gas preservation is favourable in regions with a large range of lifting， and small lifting differences. The syncline is broad and gentle with few faults have better gas accumulation conditions. The Niutitang Formation in the residual syncline of the study area has better gas content than that of other structures. Exploration of shale gas accumulation sweet spots in northern Guizhou should focus on the broad-gentle synclines with minimal changes in stratigraphic lifting， few faults， and no hydrothermal activity at the edges of paleo-uplifts.

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Environmental dynamics of nitrogen and phosphorus release from river sediments of arid areas

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Journal of Arid Land 2024年第5期16卷 685-698页

作者： SU Wenhao WU Chengcheng Sun Xuanxuan LEI Rongrong LEI Li WANG Ling ZHU Xinping college of Bioscience and Resources Environment Beijing University of AgricultureBeijing 102206China Xinjiang Tianxi Environmental Protection Technology Co.Ltd. Urumqi 830000China college of Resources and Environment sciences Xinjiang Agricultural UniversityUrumqi 830052China

Human activities lead to the accumulation of a large amount of nitrogen and phosphorus in sediments in ***,nitrogen and phosphorus can be affected by environment and re-enter the upper water body,causing secondary pollution of the river *** this study,laboratory simulation experiments were conducted initially to investigate the release of nitrogen and phosphorus from river sediments in Urumqi City and the surrounding areas in Xinjiang Uygur Autonomous Region of China and determine the factors that influence their *** results of this study showed significant short-term differences in nitrogen and phosphorus release characteristics from sediments at different sampling *** proposed secondary kinetics model(i.e.,pseudo-second-order kinetics model)better fitted the release process of sediment nitrogen and *** release of nitrogen and phosphorus from sediments is a complex process driven by multiple factors,therefore,we tested the influence of three factors(pH,temperature,and disturbance intensity)on the release of nitrogen and phosphorus from sediments in this *** most amount of nitrate nitrogen(NO_(3)^(–)-N)was released under neutral conditions,while the most significant release of ammonia nitrogen(NH_(4)^(+)-N)occurred under acidic and alkaline *** release of nitrite nitrogen(NO_(2)^(-)-N)was less affected by *** dissolved total phosphorus(DTP)released significantly in the alkaline water environment,while the release of dissolved organic phosphorus(DOP)was more significant in acidic *** release amount of soluble reactive phosphorus(SRP)increased with an increase in *** sediments released nitrogen and phosphorus at higher temperatures,particularly NH_(4)^(+)-N,NO_(3)^(–)-N,and *** highest amount of DOP was released at 15.0℃.An increase in disturbance intensity exacerbated the release of nitrogen and phosphorus from ***_(4)^(+)-N,DTP,and SRP levels increased linearly with the intens

关键词： sediment nitrogen and phosphorus environmental dynamics pseudo-second-order kinetics model dissolved organic phosphorus(DOP) Urumqi City

Application of artificial intelligence in diagnosis of pulmonary tuberculosis

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Chinese Medical Journal 2024年第5期137卷 559-561页

作者： Jingli Du Yue Su Juan Qiao Shang Gao Enjun Dong Ruilan Wang Yanhui Nie Jing Ji Zhendong Wang Jianqin Liang Wenping Gong Tuberculosis Control Team Senior Department of TuberculosisThe Eighth Medical Center of PLA General HospitalBeijing 100091China Department of Computer science and Technology College of Management Science and EngineeringCapital University of Economics and BusinessBeijing 100071China The Second Ward of Tuberculosis Department Senior Department of TuberculosisThe Eighth Medical Center of PLA General HospitalBeijing 100091China Beijing Key Laboratory of New Techniques of Tuberculosis Diagnosis and Treatment Senior Department of TuberculosisThe Eighth Medical Center of PLA General HospitalBeijing 100091China

Tuberculosis(TB)is an infectious disease caused by Mycobacterium *** the diagnostic technology of pulmonary tuberculosis(PTB)has advanced,accurate and differential diagnoses of PTB are still *** recent years,the rapid development of artificial intelligence(AI)and its wide application in the medical field have provided new opportunities for diagnosing and treating TB and *** machine learning model of AI has not only helped physicians improve diagnostic accuracy,but also enabled them to make early preventive diagnoses for individuals at increased risk of ***,AI can guide physicians to formulate targeted treatment strategies for PTB patients with different conditions.

关键词： tuberculosis diagnosis artificial

Parameter calibration of discrete element model for alfalfa seeds based on EDEM simulation experiments

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International Journal of Agricultural and Biological Engineering 2024年第3期17卷 33-38页

作者： Xinjiu Zhang Hongti Wang Fangyan Wang Zhengguo Lian college of Mechanical and Electrical Engineering Qingdao Agricultural UniversityQingdao 266109ShandongChina

In order to establish an accurate discrete element model of alfalfa seeds,real physical experiments were combined with simulation experiments,and the contact parameters of alfalfa seeds were calibrated using the repose angle of alfalfa seeds as the response *** intrinsic parameters(thousand grain weight,triaxial size,density)and contact parameters(static friction coefficient,rolling friction coefficient)of alfalfa seeds were obtained through physical experiments,and a spherical particle model was *** the Plackett Burman experiment,the static friction coefficient between alfalfa seeds,the rolling friction coefficient between alfalfa seeds,and the static friction coefficient between alfalfa seeds and ABS plastic were determined to have a significant impact on the *** steepest climb test is used to narrow down the selection range of the optimal parameters,and the box Behnken test is used to obtain the quadratic regression equation of the repose *** optimal parameter combination was obtained with the objective of minimizing the repose angle error:the static friction coefficient between alfalfa seeds and alfalfa seeds was 0.418,the rolling friction coefficient between alfalfa seeds and alfalfa seeds was 0.086,and the static friction coefficient between alfalfa seeds and ABS plastic was *** repose angle and mass flow rate experiments show that the model is effective and reliable.

关键词： alfalfa seeds discrete element parameter calibration EDEM

I must eat what I want: A roadblock to type 2 diabetes management

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Journal of Integrative nursing 2022年第2期4卷 91-96页

作者： Oluwaseyi Abiodun AKPOR Samuel Segun ABEGUNDE Olaolorunpo OLORUNFEMI Oluwaseun Oluwafunmilayo ABIODUN Department of nursing science College of Medicine and Health SciencesAfe Babalola UniversityAdo EkitiNigeria Department of Medical Surgical/Adult health nursing Federal UniversityOye-EkitiEkiti StateNigeria Department of nursing science College of Basic Health ScienceAchievers UniversityOwoOndo StateNigeria

Globally,type 2 diabetes mellitus(T2DM)is considered as one of the most common diseases,which is associated with irreversible risk factors such as age,gene,race,ethnicity,and reversible factors such as diet,physical activity,and *** to dietary regimen is the major factors for rapidly rising incidence of T2DM among developing ***,elevated HbA1c level has also been considered as one of the leading risk factors for developing microvascular and macrovascular *** in the elevated HbA1c level can be achieved through diet management;thus,this study found that improvement in patients’dietary knowledge,attitude toward,and compliance to diet regimen will promote a better control of the *** conclusion,the stakeholders(health-care providers,health facilities,agencies involved in T2DM care)should educate the patients on the importance of dietary modification in the disease ***,there is a need for nurses and other health care professionals to advocate and promote a better holistic management that will encourage patients participation and family involvement in the care.

关键词： Dietary compliance dietary management Roles of family members type 2 diabetes mellitus

Strain‑Induced Surface Interface Dual Polarization Constructs PML‑Cu/Bi_(12)O_(17)Br_(2) High‑Density Active Sites for CO_(2) Photoreduction

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Nano-Micro Letters 2024年第5期16卷 169-183页

作者： Yi Zhang Fangyu Guo Jun Di Keke Wang Molly Meng‑Jung Li Jiayu Dai Yuanbin She Jiexiang Xia Huaming Li School of Chemistry and Chemical Engineering Institute for Energy ResearchSchool of the Environment and Safety EngineeringJiangsu UniversityZhenjiang 212013People’s Republic of China State Key Laboratory Breeding Base of Green Chemistry‑Synthesis Technology College of Chemical EngineeringZhejiang University of TechnologyHangzhou 310014People’s Republic of China college of science and Hunan Key Laboratory of Extreme Matter and ApplicationsNational University of Defense TechnologyChangsha 410073People’s Republic of China Department of Applied Physics The Hong Kong Polytechnic UniversityHung HomHong KongPeople’s Republic of China School of Chemistry and Chemical Engineering National Special Superfine Powder Engineering Research CenterNanjing University of Science and TechnologyNanjing 210094People’s Republic of China Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal UniversityJinhua 321004People’s Republic of China

The insufficient active sites and slow interfacial charge trans-fer of photocatalysts restrict the efficiency of CO_(2) *** synchronized modulation of the above key issues is demanding and ***,strain-induced strategy is developed to construct the Bi–O-bonded interface in Cu porphyrin-based monoatomic layer(PML-Cu)and Bi_(12)O_(17)Br_(2)(BOB),which triggers the surface interface dual polarization of PML-Cu/BOB(PBOB).In this multi-step polarization,the built-in electric field formed between the interfaces induces the electron transfer from con-duction band(CB)of BOB to CB of PML-Cu and suppresses its reverse ***,the surface polarization of PML-Cu further promotes the electron converge in Cu *** introduction of PML-Cu endows a high density of dispersed Cu active sites on the surface of PBOB,significantly promoting the adsorption and activation of CO_(2) and CO *** conversion rate of CO_(2) photoreduction to CO for PBOB can reach 584.3μmol g-1,which is 7.83 times higher than BOB and 20.01 times than *** work offers valuable insights into multi-step polarization regulation and active site design for catalysts.

关键词： Bi_(12)O_(17)Br_(2) Porphyrin CO_(2)photoreduction Polarization Active sites

The influence of boundary conditions on the distribution of energetic electrons during collisionless magnetic reconnection

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Plasma science and Technology 2024年第4期26卷 79-84页

作者：王磊黄灿陈冬可杨忠炜杜爱民葛亚松 CAS Engineering Laboratory for Deep Resources Equipment and Technology Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029People’s Republic of China college of Earth and Planetary sciences University of Chinese Academy of SciencesBeijing 100029People’s Republic of China State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190People’s Republic of China

We conducted 2-D particle-in-cell simulations to investigate the impact of boundary conditions on the evolution of magnetic reconnection. The results demonstrate that the boundary conditions are crucial to this evolution. Specifically, in the cases of traditional periodic boundary(PB) and fully-opened boundary(OB) conditions, the evolutions are quite similar before the system achieves the fastest reconnection rate. However, differences emerge between the two cases afterward. In the PB case, the reconnection electric field experiences a rapid decline and even becomes negative, indicating a reversal of the reconnection process. In contrast, the system maintains a fast reconnection stage in the OB case. Suprathermal electrons are generated near the separatrix and in the exhaust region of both simulation cases. In the electron density depletion layer and the dipolarization front region, a larger proportion of suprathermal electrons are produced in the OB case. Medium-energy electrons are mainly located in the vicinity of the X-line and downstream of the reconnection site in both cases. However, in the OB case, they can also be generated in the electron holes along the separatrix. Before the reverse reconnection stage, no high-energy electrons are present in the PB case. In contrast, about 20% of the electrons in the thin and elongated electron current layer are high-energy in the OB case.

关键词： magnetic reconnection electron energization particle-in-cell simulation

FLOWERING LOCUS T(FT)in Photosensitive Type Chrysanthemum Accelerates Flowering in Arabidopsis

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Phyton-International Journal of Experimental Botany 2024年第4期93卷 819-830页

作者： Fenglan Wang Zhenyuan Cai Zhimei Li Shilong Zhang Honghui Luo Qing Wu Hanhan Xia Yanhong Guo college of Horticulture and Landscape Architecture Zhongkai University of Agriculture and EngineeringGuangzhou510225China

FLOWERING LOCUS T(FT)is an important factor for integrating flowering signals through the photoperiod pathway,which significantly promotes *** chrysanthemum varieties are short-day plants,sensitive to the photoperiod,which limits their ornamental and annual production *** this study,we aim to analyze the nutrients and flowering-related genes of chrysanthemums with different photoperiod types and to clone and verify the function of the flowering-related gene *** found that the formation of floral buds requires the accumulation of starch while consuming soluble sugars and the expression patterns of flowering-related genes GIGANTEA(GI),CONSTANS(CO),and FT in ***‘Zilian’and ***‘Zihongtuogui’had a certain synchronization during floral buds differentiation according to our quantitative validation,and the expression levels of CmGI,CmCO and CmFT in ***‘Zihongtuogui’were higher than those in ***.‘Zilian’in the later stage of *** was cloned from photosensitive ***‘Zihongtuogui’and polypeptide alignment and phylogenetic analysis showed that CmFT was clustered in FT-like *** further functional verification,we obtained two Arabidopsis transgenic *** results showed that CmFT transgenic ft mutant lines can significantly accelerate flowering in ***,we can initially confirm that CmFT plays an important role in promoting flowering,which may be the key reason for the photosensitivity of ***‘Zihongtuogui’.Overall,the results of this study are of great importance in revealing the flowering mechanism of different photoperiod types of chrysanthemums.

关键词： Chrysanthemum morifolium flowering-related genes CmFT photoperiod pathway heterologous expression