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Metal-organic-framework-derived copper-based catalyst for multicomponent C-s coupling reaction

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Chinese journal of Chemical engineering 2024年第6期70卷 1-8页

作者： Lixin Chen Hui Zhang Linxi Hou Xin ge Key Laboratory of synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi 214122China Department of Materials-Oriented Chemical engineering School of Chemical EngineeringFuzhou UniversityFuzhou 350116China Qingyuan Innovation Laboratory Quanzhou 362801China

Copper-based metal-organic frameworks(Cu-MOFs)are a promising multiphase catalyst for catalyzing C-s coupling reactions by virtue of their diverse structures and ***,the unpleasant odor and instability of the organosulfur,as well as the mass-transfer resistance that exists in multiphase catalysis,have often limited the catalytic application of Cu-MOFs in C-s coupling *** this paper,a Cu-MOFs catalyst modified by cetyltrimethylammonium bromide(CTAB)was designed to enhance mass transfer by increasing the adsorption of organic substrates using the long alkanes of ***,elemental sulfur was used to replace organosulfur to achieve a highly efficient and atom-economical multicomponent C-s coupling reaction.

关键词： Design Copper-based metal-organic frameworks (Cu-MOFs) Adsorption C-s coupling reaction Multiphase reaction

Constructal design of printed circuit recuperator for s-CO_(2)cycle via multi-objective optimization algorithm

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science China(Technological sciences) 2024年第1期67卷 285-294页

作者： DAN Zhisong FeNG Huijun CHeN Lingen LIAO NaiBing ge YanLin Institute of Thermal science and Power engineering Wuhan Institute of TechnologyWuhan 430205China College of Power engineering Naval University of EngineeringWuhan 430033China Hubei Provincial engineering Technology Research Center of Green Chemical equipment Wuhan 430205China school of Mechanical&electrical engineering Wuhan Institute of TechnologyWuhan 430205China AeCC Hunan Aviation Powerplant Research Institute Zhuzhou 412002China

Based on a constructal theory,the structure design of a printed circuit recuperator with a semicircular heat transfer channel for supercritical CO_(2)cycle is carried ***,a complex function composed of weighted sum of the reciprocal of total heat transfer rate and total pumping power consumption is regarded as an optimization objective,and total volumes of the recuperator and heat transfer channel are regarded as *** optimal heat transfer channel radius and minimum complex function of the recuperator are *** turns out that heat transfer rate,pumping power consumption,and complex function under the optimal construct of recuperator are reduced by 15.10%,82.44%,and 32.33%,*** exists the optimal single plate channel number which results in the double minimum complex ***,for the purpose of minimizing the reciprocal of heat transfer rate and pumping power consumption,NsGA-II algorithm is used to achieve multi-objective optimization,and the minimum deviation index derived by the decision-making methods is 0.076,which can be taken as multi-objective optimal design scheme for printed circuit recuperator with semicircular heat transfer *** findings presented here can serve as theoretical recommendations for the structure design of printed circuit recuperator.

关键词： constructal theory supercritical CO_(2)cycle printed circuit heat exchanger heat transfer rate pumping power consumption multi-objective optimization

Controllability of semilinear Integrodifferential Degenerate sobolev equations

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journal of systems science & Complexity 2024年第5期37卷 1923-1936页

作者： ge Zhaoqiang school of Mathematics and statistics Xi’an Jiaotong University

In this paper, the approximate controllability of semilinear integrodifferential degenerate sobolev equations with nonlocal conditions is investigated in the sense of integral solution in Hilbert spaces. some sufficient and necessary conditions are obtained. Firstly, the existence and uniqueness of integral solutions of semilinear integrodifferential degenerate sobolev equations with nonlocal conditions are considered by ge-evolution operator theory and sadovskii's fixed point theorem, the existence and uniqueness theorem of solutions is given. secondly, the approximate controllability of semilinear integrodifferential degenerate sobolev equations with nonlocal conditions is studied in the sense of integral solution. The criterion for approximate controllability is provided. The obtained results have important theoretical and practical value for the study of controllability of semilinear integrodifferential degenerate sobolev equations with nonlocal conditions.

关键词： Approximate controllability ge-evolution operator integral solution sadovskii’s fixed point theorem semilinear integrodifferential degenerate sobolev equations

Health risk assessment of trace metal(loid)s in agricultural soils based on Monte Carlo simulation coupled with positive matrix factorization model in Chongqing, southwest China

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journal of Mountain science 2024年第1期21卷 100-112页

作者： MA jie CHU Lijuan sUN jing WANG shenglan ge Miao DeNG Li Chongqing ecological and environmental Monitoring Center Chongqing 401147China Key Laboratory of Organic Pollutants in environmental Chemical Behavior and ecological Toxicology of Chongqing Chongqing 401147China Department of Pediatrics Chongqing Health Center for Women and ChildrenChongqing 401147China Department of Pediatrics Women and Children’s Hospital of Chongqing Medical UniversityChongqing 401147China

This study aimed to investigate the pollution characteristics, source apportionment, and health risks associated with trace metal(loid)s(TMs) in the major agricultural producing areas in Chongqing, China. We analyzed the source apportionment and assessed the health risk of TMs in agricultural soils by using positive matrix factorization(PMF) model and health risk assessment(HRA) model based on Monte Carlo simulation. Meanwhile, we combined PMF and HRA models to explore the health risks of TMs in agricultural soils by different pollution sources to determine the priority control factors. Results showed that the average contents of cadmium(Cd), arsenic (As), lead(Pb), chromium(Cr), copper(Cu), nickel(Ni), and zinc(Zn) in the soil were found to be 0.26, 5.93, 27.14, 61.32, 23.81, 32.45, and 78.65 mg/kg, respectively. spatial analysis and source apportionment analysis revealed that urban and industrial sources, agricultural sources, and natural sources accounted for 33.0%, 27.7%, and 39.3% of TM accumulation in the soil, respectively. In the HRA model based on Monte Carlo simulation, noncarcinogenic risks were deemed negligible(hazard index e carcinogenic risks were at acceptable level(10^(-6)genic risk ≤ 10^(-4)), with higher risks observed for children compared to adults. The relationship between TMs, their sources, and health risks indicated that urban and industrial sources were primarily associated with As, contributing to 75.1% of carcinogenic risks and 55.7% of non-carcinogenic risks, making them the primary control factors. Meanwhile, agricultural sources were primarily linked to Cd and Pb, contributing to 13.1% of carcinogenic risks and 21.8% of non-carcinogenic risks, designating them as secondary control factors.

关键词： Monte Carlo simulation Health risk assessment Trace metal(loid)s Positive matrix factorization Agricultural soils

evaluation of teplizumab's efficacy and safety in treatment of type 1 diabetes mellitus:A systematic review and meta-analysis

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World journal of Diabetes 2024年第7期15卷 1615-1626页

作者： Xiao-Lan Ma Dan ge Xue-jian Hu Department of endocrinology and Metabolism The Second Affiliated Hospital of Lanzhou UniversityLanzhou 730000Gansu ProvinceChina

BACKGROUND Islets of Langerhans beta cells diminish in autoimmune type 1 diabetes mellitus(T1DM).Teplizumab,a humanized anti-CD3 monoclonal antibody,may help *** long-term implications on clinical T1DM development,safety,and efficacy are *** To assess the effectiveness and safety of teplizumab as a therapeutic intervention for individuals with *** A systematic search was conducted using four electronic databases(PubMed,embase,scopus,and Cochrane Library)to select publications published in peerreviewed journals written in *** odds ratio(OR)and risk ratio(RR)were calculated,along with their 95%*** assessed heterogeneity using Cochrane Q and I2 statistics and the appropriate P *** There were 8 randomized controlled trials(RCTs)in the current meta-analysis with a total of 1908 T1DM patients from diverse age cohorts,with 1361 patients receiving Teplizumab and 547 patients receiving a *** was found to have a substantial link with a decrease in insulin consumption,with an OR of 4.13(95%CI:1.72 to 9.90).Teplizumab is associated with an improved Cpeptide response(OR 2.49;95%CI:1.62 to 3.81)and a significant change in Glycated haemoglobin A1c(HbA1c)levels in people with type 1 diabetes[OR 1.75(95%CI:1.03 to 2.98)],and it has a RR of 0.71(95%CI:0.53 to 0.95).CONCLUsION In type 1 diabetics,teplizumab decreased insulin consumption,improved C-peptide response,and significantly changed HbA1c levels with negligible side *** appears to improve glycaemic control and diabetes management with good safety and efficacy.

关键词： Type-1 diabetes mellitus Teplizumab Anti-CD3 monoclonal antibody Insulin Glycated haemoglobin A1c Cpeptide

solid Desiccant Heat Pump Fresh Air Unit using Composite silica gel

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journal of Thermal science 2024年第4期33卷 1286-1300页

作者： YANG Tianyu GUO Defang ge Tianshu Institute of Refrigeration and Cryogenics Shanghai Jiao Tong UniversityKey Laboratory of Power Mechanical EngineeringMOE ChinaShanghai200240China Qingdao Haier A/C electronic Co. LtdQingdao266101China

The introduction of fresh air into the indoor space leads to a significant increase in cooling or heating *** desiccant heat pump fresh air unit which can handle the latent and sensible load of fresh air efficiently have been proposed *** improve the performance of the solid desiccant heat pump fresh air unit in the fresh air handling process,in this paper,the application of composite silica gel in a heat pump fresh air unit was *** comparison between silica gel coating(sGC)and composite silica gel coating(CsGC)shows that the adsorption rate and water uptake capacity of CsGC are more than two times higher than those of *** experimental setup for the solid desiccant heat pump fresh air unit was *** performance of sGC and CsGC was tested in the setup *** show that under summer conditions,compared with the solid desiccant heat pump fresh air unit using silica gel(sGFU),the average moisture removal and COP of the one using composite silica gel(CsGFU)increased by 15%and 30%,*** winter conditions,compared with sGFU,the average humidification and COP of CsGFU increased by 42%and 17%.With optimal operation conditions of 3 min switchover time and 40 r/s compressor frequency,the COP of CsGFU under summer conditions can reach *** also show that the CsGFU and sGFU have higher COP and dehumidification rate under higher outdoor temperature and humidity ratio.

关键词： fresh air system desiccant coated heat exchanger humidification dehumidification experimental comparison

Constraint Learning-based Optimal Power Dispatch for Active Distribution Networks with extremely Imbalanced Data

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Csee journal of Power and energy systems 2024年第1期10卷 51-65页

作者： Yonghua song ge Chen Hongcai Zhang state Key Laboratory of Internet of Things for smart City and Department of electrical and Computer engineering University of MacaoMacao 999078China school of electrical and Computer engineering Purdue UniversityWest LafayetteIN 47907 USA

Transition towards carbon-neutral power systems has necessitated optimization of power dispatch in active distribution networks(ADNs)to facilitate integration of distributed renewable *** to unavailability of network topology and line impedance in many distribution networks,physical model-based methods may not be applicable to their *** tackle this challenge,some studies have proposed constraint learning,which replicates physical models by training a neural network to evaluate feasibility of a decision(i.e.,whether a decision satisfies all critical constraints or not).To ensure accuracy of this trained neural network,training set should contain sufficient feasible and infeasible ***,since ADNs are mostly operated in a normal status,only very few historical samples are ***,the historical dataset is highly imbalanced,which poses a significant obstacle to neural network *** address this issue,we propose an enhanced constraint learning ***,it leverages constraint learning to train a neural network as surrogate of ADN's ***,it introduces synthetic Minority Oversampling Technique to generate infeasible samples to mitigate imbalance of historical *** incorporating historical and synthetic samples into the training set,we can significantly improve accuracy of neural ***,we establish a trust region to constrain and thereafter enhance reliability of the *** confirm the benefits of the proposed method in achieving desirable optimality and feasibility while maintaining low computational complexity.

关键词： Deep learning demand response distribution networks imbalanced data optimal power flow

Aβ-Aggregation-generated Blue Autofluorescence Illuminates senile Plaques as well as Complex Blood and Vascular Pathologies in Alzheimer’s Disease

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Neuroscience Bulletin 2024年第8期40卷 1115-1126页

作者： Hualin Fu jilong Li Chunlei Zhang Peng Du Guo Gao Qiqi ge Xinping Guan Daxiang Cui Institute of Nano Biomedicine and engineering School of Sensing Science and EngineeringSchool of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China Institute of Marine equipment Shanghai Jiao Tong UniversityShanghai 200240China National Center for Translational Medicine Shanghai Jiao Tong UniversityShanghai 200240China Department of Colorectal surgery School of MedicineXinhua HospitalShanghai Jiao Tong UniversityShanghai 200092China Department of Automation Shanghai Jiao Tong UniversityShanghai 200240China The Key Laboratory of system Control and Information Processing Ministry of EducationShanghai 200240China

senile plaque blue autofluorescence was discovered around 40 years ago,however,its impact on Alzheimer’s disease(AD)pathology has not been fully *** analyzed senile plaques with immunohistochemistry and fluorescence imaging on AD brain sections and also Aβ aggregation in *** DAPI or Hoechst staining,the nuclear blue fluorescence could only be correctly assigned after subtracting the blue plaque *** flower-like structures wrapping dense-core blue fluorescence formed by cathepsin D staining could not be considered central-nucleated neurons with defective lysosomes since there was no nuclear staining in the plaque core when the blue autofluorescence was *** Aβ self-oligomers and Aβ/hemoglobin heterocomplexes generated blue *** Aβ amyloid blue autofluorescence not only labels senile plaques but also illustrates red cell aggregation,hemolysis,cerebral amyloid angiopathy,vascular plaques,vascular adhesions,and *** summary,we conclude that Aβ-aggregation-generated blue autofluorescence is an excellent multi-amyloidosis marker in Alzheimer’s disease.

关键词： senile plaque Blue autofluorescence Aβ Amyloid aggregation Hemoglobin Cathepsin D.Microaneurysm Alzheimer's disease

engineering and understanding sns_(0.5)se_(0.5)@N/s/se triple-doped carbon nanofibers for enhanced sodium-ion batteries

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Chinese Chemical Letters 2024年第4期35卷 226-230页

作者： Fanjun Kong Yixin ge shi Tao Zhengqiu Yuan Chen Lu Zhida Han Lianghao Yu Bin Qian school of electronic and Information engineering Changshu Institute of TechnologyChangshu 215500China Key Laboratory of spin electron and Nanomaterials of Anhui Higher education Institutes Suzhou UniversitySuzhou 234000China Far east Holding Group Co. Ltd.Yixing 214200China

Tin-based chalcogenides have attracted tremendous attention as an anode material for sodium storage owing to their unique structure and high theoretical capacity. Unfortunately, the large volume change and poor conductivity lead to sluggish reaction kinetics and poor cycling performance. Herein, sns_(0.5)se_(0.5)nanoparticles coupled with N/s/se triple-doped carbon nanofibers(sns_(0.5)se_(0.5)@Nsse-C) are designed and synthesized through electrospinning and annealing process. Benefiting from the synergistic effects of sns_(0.5)se_(0.5)and Nsse-C, the sns_(0.5)se_(0.5)@Nsse-C nanofibers exhibit a high reversible capacity and ultralong cycle life at higher current density for sodium-ion batteries. Furthermore, the sodium storage mechanism and electrochemical reaction kinetics of the sns_(0.5)se_(0.5)@Nsse-C composite are characterized by the in-situ measurements. The theoretical calculations further reveal the structural advantages of sns_(0.5)se_(0.5)@NsseC composite, which exhibits a high adsorption energy of Na+. This work can provide a novel idea for the synthesis of ternary tin-based chalcogenides and is beneficial for the investigation of their reaction kinetics.

关键词： sns_(0.5)se_(0.5) Carbon nanofibers Doping Density functional theory sodium ion batteries