检索结果-南通市图书馆

The function of doping nitrogen on removing fluoride with decomposing La-MOF-NH_2:Density functional theory calculation and experiments

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第1期135卷 118-129页

作者： Hongguo Zhang KuilinWan Jia Yan Qian Li Yufang Guo Lei Huang Samuel Raj Babu Arulmani Jian Luo School of Environmental Science and Engineering Guangzhou UniversityGuangzhou 510006China guangzhou University-Linkoping University research Center on Urban Sustainable Development Guangzhou UniversityGuangzhou 510006China School of Civil and Environmental Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

Fluoride is an important pollutant in wastewater,and adsorption is an effective way to remove *** nitrogen plays an important role in adsorbent materials,computational models were developed to understand the changes in work function resulting from nitrogen ***-N-C-800℃,was prepared by pyrolyzing La-MOF-NH_(2)to verify the influence on the performance of removing fluoride by *** and electrochemical performance tests were performed to characterize La-N-C-800℃.Adsorption kinetics,adsorption thermodynamics,initial concentrations,pH,and ions competition were investigated using La-N-C-800℃for fluoride *** addition,density functional theory was applied to evaluate the function of *** nitrogen atoms were added,the density of states,partial density of states,populations,and different orbits of charge were calculated to discover deep *** strengthened the carbon structure and La_(2)O_(3)structure to remove *** addition,nitrogen can also act as an adsorption site in the carbon *** results provide design ideas for improving the performance of adsorbent materials by doping elements.

关键词： Capacitive deionization Fluoride La-MOFs Doping nitrogen

Intranasal adenovirus-vectored Omicron vaccine induced nasal immunoglobulin A has superior neutralizing potency than serum antibodies

在线全文

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2024年第8期9卷 3507-3518页

作者： Si Chen Zhengyuan Zhang Qian Wang Qi Yang Li Yin Lishan Ning Zhilong Chen Jielin Tang Weiqi Deng Ping He Hengchun Li Linjing Shi yjun Deng Zijian Liu Hemeng Bu Yaohui Zhu Wenming Liu Linbing Qu Ligiang Feng Xiaoli Xiong Baoqing Sun Nanshan Zhong Feng Li ingchao Li Xinwen Chen Ling Chen guangzhou institute of Infectious Disease Guangzhou Eighth People's HospitalGuangzhou Medical UniversityGuangzhouChina guangzhou National Laboratory GuangzhouChina State Key Laboratory of Respiratory Disease Center for Cell Lineage ResearchGuangzhou Institutes of Biomedicine and HealthChinese Academy of SciencesGuangzhouChina University of Chinese Academy of Sciences BeijingChina State Key Laboratory of Respiratory Disease National Clinical Research Center for Respiratory DiseaseGuangzhou Institute of Respiratory Healththe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina Xiamen United institute of Respiratory Health XiamenChina

The upper respiratory tract is the initial site of SARS-CoV-2 *** spike-specific secretory immunoglobulin A(slgA)correlates with protection against Omicron breakthrough *** report that intranasal vaccination using human adenovirus serotype 5(Ad5)vectored Omicron spike in people who previously vaccinated with ancestral vaccine could induce robust neutralizing slgA in the nasal *** slgA was predominantly present in dimeric and multimeric forms and accounted for nearly 40%of total proteins in nasal mucosal lining fluids(NMLFs).A low-level IgG could also be detected in NMLFs but not IgM,IgD,and *** a complete nasal wash,slgA in the nasal passage could be replenished rapidly within a few hours.A comparison of purified paired serum IgA,serum IgG,and nasal slgA from the same individuals showed that slgA was up to 3-logs more potent than serum antibodies in binding to spikes and in neutralizing Omicron *** IgG and IgA failed to neutralize XBB and BA.2.86,while nasal slgA retained potent neutralization against these newly emerged *** analysis showed that slgA Was more effective than IgG or IgA in blocking spike-mediated cell-to-cell transmission and protecting hACE2 mice from XBB *** a slgA monoclonal antibody as a reference,we estimated that the total nasal slgA contains about 2.6-3.9%spikespecific slgA in NMLFs collected approximately one month after intranasal *** study provided insights for developing intranasal vaccines that can induce slgA to build an effective and mutation-resistant first-line immune barrier against constantly emerging variants.

关键词： nasal antibodies neutral

Carbon steel anticorrosion performance and mechanism of sodium lignosulfonate

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2024年第1期43卷 356-365页

作者： Bo-Kai Liao Rui-Xuan Quan Ping-Xian Feng Huan Wang Wei Wang Li Niu School of Chemistry and Chemical Engineering Guangzhou Key Laboratory of Sensing Materials and DevicesJoint Institute of Guangzhou University and Institute of Corrosion Science and TechnologyGuangzhou UniversityGuangzhou 510006China

Lignin is a typical biological macromolecule with a three-dimensional network structure and abundant functional groups. It has excellent ionic complexation ability and amphiphilic molecular structure *** this study, the carbon steel anticorrosion performance of sodium lignosulfonate(SLS) in an acid solution was evaluated using the weight loss method, electrochemical measurements, scanning vibration electrode technique(SVET), and surface characterization methods. SLS exhibited excellent corrosion inhibition efficiency for Q235carbon steel in 1 mol·L^(-1) HCl, reaching a maximum value of 98%. A low SLS concentration of 20 mg·L^(-1) resulted in the maximum corrosion inhibition efficiency, which remained nearly constant at higher SLS *** SVET test demonstrated that the formation of an SLS adsorption film can impede corrosion. This study confirms the significance of the application of green biomass resources in the field of metal corrosion protection and green functional materials.

关键词： Lignin Sodium lignosulfonate Corrosion inhibitor Carbon Steel

Comparative analysis between single-train passing and double-train intersection in a tunnel

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2024年第5期25卷 429-442页

作者： Jianming DU Qian FANG Xuan ZHANG Hualao WANG Bridge and Tunnel research Center Research Institute of Highway Ministry of TransportBeijing 100088China Tunnel and Underground Engineering research Center of Ministry of Education Beijing Jiaotong UniversityBeijing 00044China

Aerodynamic pressure significantly impacts the scientific evaluation of tunnel service *** aerodynamic pressure of two trains running in a double-track tunnel is considerably more complicated than that of a single *** used the numerical method to investigate the difference in aerodynamic pressure between a single train and two trains running in a double-track ***,the numerical method was verified by comparing the results of numerical simulation and on-site ***,the characteristics of aerodynamic pressure were ***,the influence of various train-tunnel factors on the characteristics of aerodynamic pressure was *** results show that the aerodynamic pressure variation can be divided into stage I:irregular pressure fluctuations before the train tail leaves the tunnel exit,and stage II:periodic pressure declines after the train tail leaves the tunnel *** addition,the aerodynamic pressure simultaneously jumps positively or drops negatively for a single train or two trains running in double-track tunnel *** pressure amplitude in the two-train case is higher than that for a single *** maximum positive peak pressure difference(P_(STP))and maximum negative peak pressure difference(P_(STN))increase as train speed rises to the power from 2.256 to 2.930 in stage *** P_(STP) and P_(STN) first increase and then decrease with the increase of tunnel length in stage *** P_(STP) and P_(STN) increase as the blockage ratio rises to the power from 2.032 to 2.798 in stages I and II.

关键词： Railway tunnel Aerodynamic effect Pressure characteristic Train speed Tunnel length Blockage ratio

Contribution of Surface Waves to Sea Surface Temperatures in the Arctic Ocean

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Ocean University of China 2024年第5期23卷 1151-1162页

作者： WEI Meng SHAO Weizeng SHEN Wei HU Yuyi ZHANG Yu ZUO Juncheng College of Oceanography and Ecological Science Shanghai Ocean UniversityShanghai 201306China China Waterborne transport research institute Ministry of Transport of the People’s Republic of ChinaBeijing 100088China

The aim of our study was to examine the contribution of surface waves from WAVEWATCH-III(WW3)to the variation in sea surface temperature(SST)in the Arctic *** simulated significant wave height(SWH)were validated against the products from Haiyang-2B(HY-2B)in 2021,obtaining a root mean squared error(RMSE)of 0.45 with a correlation of 0.96 and scatter index of *** wave-induced effects,i.e.,wave breaking and mixing induced by nonbearing waves resulting in changes in radiation stress and Stokes drift,were calculated from WW3,ERA-5 wind,SST,and salinity data from the National Centers for Environmental Prediction and were taken as forcing fields in the Stony Brook Parallel Ocean *** results showed that an RMSE of 0.81℃ with wave-induced effects was less than the RMSE of 1.11℃ achieved without the wave term compared with the simulated SST with the measurements from *** the four wave effects and sea ice freezing,the SST in the Arctic Ocean decreased by up to 1℃ in *** analysis revealed that the SWH was linear in SST(values without subtraction of waves)in summer and autumn,but this behavior was not observed in spring or winter due to the presence of sea *** interannual variation also presented a negative relationship between the difference in SST and SWH.

关键词： sea surface wave sea surface temperature Arctic Ocean

Novel Static Security and Stability Control of Power Systems Based on Artificial Emotional Lazy Q-Learning

在线全文

学校读者我要写书评

暂无评论

Energy Engineering 2024年第6期121卷 1713-1737页

作者： Tao Bao Xiyuan Ma Zhuohuan Li Duotong Yang Pengyu Wang Changcheng Zhou Digital Grid research institute Southern Power GridGuangzhou510000China

The stability problem of power grids has become increasingly serious in recent years as the size of novel power systems *** order to improve and ensure the stable operation of the novel power system,this study proposes an artificial emotional lazy Q-learning method,which combines artificial emotion,lazy learning,and reinforcement learning for static security and stability analysis of power ***,this study compares the analysis results of the proposed method with those of the small disturbance method for a stand-alone power system and verifies that the proposed lazy Q-learning method is able to effectively screen useful data for learning,and improve the static security stability of the new type of power system more effectively than the traditional proportional-integral-differential control and Q-learning methods.

关键词： Artificial sentiment static secure stable analysis Q-learning lazy learning data filtering

Ciclopirox inhibits SARS-CoV-2 replication by promoting the degradation of the nucleocapsid protein

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Pharmaceutica Sinica B 2024年第6期14卷 2505-2519页

作者： Xiafei Wei Yuzheng Zhou Xiaotong Shen Lujie Fan Donglan Liu Xiang Gao Jian Zhou Yezi Wu Yunfei Li Wei Feng Zheng Zhang institute for Hepatology National Clinical Research Center for Infectious DiseaseShenzhen Third People's HospitalSouthern University of Science and TechnologyShenzhen 518112China guangzhou Laboratory Guangzhou Medical UniversityGuangzhou 511495China State Key Laboratory of Respiratory Disease National Clinical Research Center for Respiratory DiseaseGuangzhou Institute of Respiratory Healththe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 510120China

The nucleocapsid protein(NP)plays a crucial role in SARS-CoV-2 replication and is the most abundant structural protein with a long *** its vital role in severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)assembly and host inflammatory response,it remains an unexplored target for drug *** this study,we identified a small-molecule compound(ciclopirox)that promotes NP degradation using an FDA-approved library and a drug-screening cell *** significantly inhibited SARS-CoV-2 replication both in vitro and in vivo by inducing NP *** induced abnormal NP aggregation through indirect interaction,leading to the formation of condensates with higher viscosity and lower *** condensates were subsequently degraded via the autophagy-lysosomal pathway,ultimately resulting in a shortened NP half-life and reduced NP *** results suggest that NP is a potential drug target,and that ciclopirox holds substantial promise for further development to combat SARS-CoV-2 replication.

关键词： SARS-CoV-2 Nucleocapsid protein Viral replication Ciclopirox Abnormal aggregation Protein degradation Autophagy-lysosome Drug target

High-frequency Resonance Analysis and Impedance Reshaping Control of MMC-HVDC System Based on Frequency Coupling Impedance Model

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Modern Power Systems and Clean Energy 2024年第2期12卷 646-657页

作者： Juanjuan Wang Wei Chen Yuekun Liu Chuang Fu Yunming Ye Junjie Feng School of Electric Power South China University of TechnologyGuangzhouChina Guangdong Power Grid Co. Ltd.GuangzhouChina Electric Power research institute China Southern Power GridGuangzhouChina

In recent years, high-frequency resonance (HFR) events occurred in several modular multilevel converter based high-voltage direct current (MMC-HVDC) projects. The time delay of an MMC-HVDC system is the critical factor that induces HFR. The frequency coupling affects the impedance characteristics of an MMC and further deteriorates system stability. Therefore, in this paper, a multi-input multi-output admittance model of an MMC-HVDC system is developed to analyze its frequency characteristics. The effects of current loop, power loop, phase-locked loop, and operating point on the MMC frequency coupling degree are analyzed in detail. Meanwhile, to further suppress HFR in the MMC-HVDC system, an enhanced impedance reshaping control strategy based on the equivalent single-input single-output impedance model is proposed. Finally, the accuracy of the enhanced impedance model and the effectiveness of the impedance reshaping control are verified by electromagnetic transient simulations in PSCAD.

关键词： Modular multilevel converter based high-voltage direct current(MMC-HVDC) high-frequency resonance frequency coupling impedance model impedance reshaping control

UniBind:a novel artificial intelligence-based prediction model for SARS-CoV-2 infectivity and variant evolution

在线全文

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2024年第1期9卷 14-15页

作者： Qihong Yan Jincun Zhao State Key Laboratory of Respiratory Disease National Clinical Research Center for Respiratory DiseaseGuangzhou Institute of Respiratory Healththe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina

In a recent study published in Nature Medicine,Wang et *** an excellent framework called UniBind based on artificial intelligence(AI),which enables accurately predicting infectivity of SARS-CoV-2 variants and evolutionary trends of future viral variants.1 This computational method holds the possibility to not only serve as a valuable early-warning tool for monitoring potential pathogenic SARS-CoV-2 variants but also facilitate fundamental research on protein-protein interactions(PPIs).

关键词： artificial Bind prediction