检索结果-南通市图书馆

Chinese Chemical Letters 2025年第1期36卷 529-533页

作者： Ming-Zhen Li Yang Zhang Kun Li Ya-Nan Shang Yi-Zhen Zhang Yu-Jiao Kan Zhi-Yang Jiao Yu-Yuan Han Xiao-Qiang Cao College of Safety and Environmental Engineering Shandong University of Science and TechnologyQingdao 266590China Engineering research Center of Groundwater Pollution Control and Remediation Ministry of Education of ChinaBeijing Normal UniversityBeijing 100875China Environment research Institute Shandong UniversityQingdao 266237China Institute of Yellow River Delta Earth Surface Processes and Ecological Integrity Shandong University of Science and TechnologyQingdao 266590China

Inactivation of carbon-based transition metal catalysts,which was caused by electron loss,limited their application in advanced oxidation ***,Co and TiO_(2) double-loaded carbon nanofiber material(Co@CNFs-TiO_(2))was synthesized in this *** and chemical catalytic systems were synergized *** was eliminated within 15 *** degradation rate remained above 90%after five cycles,and the 50%promotion proved the high stability of Co@CNFs-TiO_(2).The main reactive oxygen species in this system were sulfate radicals,whereas Co and TiO_(2) represented the active sites of the catalytic *** generated from TiO_(2) during the photocatalytic process were transferred to Co,which promoted the Co(Ⅲ)/Co(Ⅱ)cycle and maintained Co in a low-valence state,thereby stimulating the generation of sulfate *** this study,the effective regulation of reactive oxygen species in the reaction system was *** results provided a guidance for in situ electron replenishment and regeneration of carbon-based transition metal catalysts,which will expand the practical application of advanced oxidation processes.

关键词： Electron transportation Catalyst regeneration Peroxymonosulfate Co Photocatalytic

Review on micro-mechanism of forming emulsification during rare earth extraction by acidic extractants

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2025年第1期43卷 9-20,I0001页

作者： Jie Liu Yuxiu Zhao Zhirong Wang Minghui Jia Wenxiang Xia Guizhi Wu Wenda Guo Ru'an Chi Kun Huang School of Environmental and Municipal Engineering Qingdao University of TechnologyQingdao266100China Open project of Key Laboratory of Green Chemical Engineering Process of ministry of education Wuhan Institute of Technologywuhan430205China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing100083China

Solvent extraction is the main method used to separate and purify rare earth *** the process of rare earths extraction,emulsification often generated due to the instability of the aqueous and organic phases or improper operating *** emulsification occurs,it would not only lead to low rare earths recovery efficiency,small product quantities,high production costs and the losing of extractant and rare earth resources,but also result in serious environmental ***,it is very important to study the micro-mechanisms of emulsification and establish new methods to prevent emulsification at the *** this paper,possible factors resulting in emulsification,such as the compositions and properties of the organic and aqueous phases,the operating conditions of the rare earths extraction are *** micro-mechanisms of emulsification are summarized basing on the microscopic structures in the bulk phase,aggregations of the extractants at the organic-aqueous interface,spectral characterizations and computational *** this basis,new formation mechanisms are proposed for *** explorations are employed to verify the correctness of these new ***,future directions for studies of the emulsification micro-mechanism are *** study provides a theoretical basis for further understanding the micro-mechanisms of interfacial instability resulting in emulsification in the process of rare earths extraction.

关键词： Extraction Rare earths Emulsification Mechanism Interface

Integration of Melanin-Resveratrol Nanosystem for the Diagnostic-therapeutic of Renal Fibrosis

在线全文

学校读者我要写书评

暂无评论

Chemical research in Chinese Universities 2025年第1期41卷 86-94页

作者： LI Tingting JIAMengni JI Huifang ZHANG Ruiping The Third Hospital of Shanxi Medical University Shanxi Bethune HospitalShanxi Academy of Medical SciencesTongji Shanxi HospitalTaiyuan030032P.R.China Medicinal Basic research Innovation Center of Chronic Kidney Disease Ministry of EducationShanxi Medical UniversityTaiyuan030001P.R.China School of Pharmacy Shanxi Medical UniversityTaiyuan030001P.R.China The Radiology Department of Shanxi Provincial People’s Hospital Affiliated to Shanxi Medical University Taiyuan030012P.R.China

In this work,melanin nanoparticle-resveratrol(MNP-RES)nanosystem was excogitated and constructed for the treatment and imaging of folate-induced renal fibrosis(RF)mice model to fulfill the combination of diagnosis and *** characterization indicated that MNP-RES was a monodisperse spherical framework with a uniform diameter of(18.6±2.7)nm and the drug loading content of RES was 44.8%.The inhibition ratios of reactive oxygen species,such as·OH,·O_(2)−,ABTS’and DPPH were all greater than 80%.After systemic therapy with MNP-RES,the levels of serum creatinine(SCr)and blood urea nitrogen(BUN)were decreased,and the extent of renal fibrosis was considerably relieved,which was verified by H&E,Masson and terminal-deoxynucleoitidyl transferase mediated nick end labeling(TUNEL)*** MNP-RES nanosystem can diagnose and monitor the therapeutic efficacy of RF in real time and noninvasively via photoacoustic/magnetic resonance imaging(PA/MRI)dual-modality imaging,and the MNP-RES diagnostic-therapeutic nanosystem had satisfactory biocompatibility in vivo,which facilitated its future bio-transformation for RF treatment in clinical application.

关键词： Melanin Resveratrol Diagnostic-therapeutic nanosystem Dual-modal imaging Renal fibrosis

B-embedded narrowband pure near-infrared(NIR)phosphorescent iridium(Ⅲ)complexes and solution-processed OLED application

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2025年第1期36卷 623-626页

作者： Fuzheng Zhang Chao Shi Jiale Li Fulin Jia Xinyu Liu Feiyang Li Xinyu Bai Qiuxia Li Aihua Yuan Guohua Xie School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China The Institute of Flexible Electronics(Future Technologies) Xiamen UniversityXiamen 361005China

Pure near-infrared(NIR)phosphorescent materials with emission peak larger than 700 nm are of great significance for the development of optoelectronics and *** have designed and synthesized two new B-embedded pure near-infrared(NIR)-emitting iridium complexes(Ir(Bpiq)2acac and Ir(Bpiq)2dpm)with peaks greater than 720 *** importantly,they exhibit very narrow phosphorescent emission with full width at half maximum(FWHM)of only about 50 nm(0.12 e V),resulting in a high NIR content(>90%)in their *** view of better optical property and solubility,the complex Ir(Bpiq)_(2)dpm was used as the emitting layer of a solution-processed OLED device,and achieved good maximum external quantum efficiency(EQE)(2.8%)peaking at 728 *** research provides an important strategy for the design of narrowband NIR-emitting phosphorescent iridium complexes and their optoelectronic applications.

关键词： Iridium complex B-embedded Near-Infrared OLED Phosphorescence

Low-temperature chlorination roasting technology for the simultaneous recovery of valuable metals from spent LiCoO_(2)cathode material

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 80-91页

作者： Junjie Shi Changle Hou Jingjing Dong Dong Chen Jianzhong Li Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(ministry of education) Northeastern UniversityShenyang 110819China School of Metallurgy Northeastern UniversityShenyang 110819China

With the continuous increase in the disposal volume of spent lithium-ion batteries(LIBs),properly recycling spent LIBs has become essential for the advancement of the circular *** study presents a systematic analysis of the chlorination roasting kinetics and proposes a new two-step chlorination roasting process that integrates thermodynamics for the recycling of LIB cathode *** activation energy for the chloride reaction was 88.41 kJ/mol according to thermogravimetric analysis–derivative thermogravimetry data obtained by using model-free,model-fitting,and Z(α)function(αis conversion rate).Results indicated that the reaction was dominated by the first-order(F1)model when the conversion rate was less than or equal to 0.5 and shifted to the second-order(F2)model when the conversion rate exceeded *** conditions were determined by thoroughly investigating the effects of roasting temperature,roasting time,and the mass ratio of NH_(4)Cl to LiCoO_(2).Under the optimal conditions,namely 400℃,20 min,and NH_(4)Cl/LiCoO_(2)mass ratio of 3:1,the leaching efficiency of Li and Co reached 99.43% and 99.05%,*** of the roasted products revealed that valuable metals in LiCoO_(2)transformed into CoCl_(2) and ***,the reaction mechanism was elucidated,providing insights for the establishment of a novel low-temperature chlorination roasting technology based on a crystal structure *** technology can guide the development of LIB recycling processes with low energy consumption,low secondary pollution,high recovery efficiency,and high added value.

关键词： spent lithium-ion battery thermodynamics chlorination roasting kinetics circular economy

Study and application of the influence of inclination angle on the cross-fusion mechanism of high gas thick coal seam

在线全文

学校读者我要写书评

暂无评论

International Journal of Mining Science and Technology 2025年第1期35卷 69-85页

作者： Pengxiang Zhao Zechen Chang Shugang Li Risheng Zhuo Yongyong Jia Qiudong Shao Wen Lei College of Safety Science and Engineering Xi'an University of Science and TechnologyXi’an 710054China Western Mining Gas Intelligent Extraction Engineering research Centre Xi’an 710054China Xinjiang Coal and Coalbed Methane Engineering Technology research Centre Urumqi 830091China Xinjiang Key Laboratory of Coal Mine Disaster Intelligent Prevention and Emergency Response Xinjiang Institute of EngineeringUrumqi 830023China Xinjiang Uygur Autonomous Region Coal Science research Institute Urumqi 830091China Xinjiang Changji Heze Tengda Mining Co. Ltd.Changji 831100China

In this study,to better decide the effect of coal seam dip angle upon the dynamic change of the crossfusion in gas transport and storage areas during the progress of working face in the high gas thick coal seam,a two-dimensional physical simulation experiment regarded as the theoretical research was conducted to properly explore the variation law of overburden *** results demonstrated that the boundary of the gas transport zone was located in the region of fracture *** boundary of the gas storage area was located in the abrupt penetration ***,according to the information theory,the state of the gas transport and storage areas was determined by the changing trend of the fracture rate and fracture *** mathematical representation model of the dip effect in gas transport and storage areas was *** criteria upon which the regional location of the gas transport area and gas storage area can be based were put *** cross-fusion evolution process of the dip effect in gas transport and storage areas was revealed as *** research results could provide guidance for realising directional and accurate gas extraction.

关键词： Coal seam dip angle Cross fusion High gas thick coal seam Overburden fracture Gas transport and storage areas

Development of Gravity Theories in the View of TRAPPIST-1e

在线全文

学校读者我要写书评

暂无评论

research in Astronomy and Astrophysics 2025年第1期25卷 143-161页

作者： Nan Wang Lu-Yao Lu Hui-Gen Liu An-Dong Chen Tiger Lu Ao-Ran Cui Jun-Kai Wang Marine Science and Technology College Zhejiang Ocean University Key Laboratory of Modern Astronomy and Astrophysics Ministry of Education Zhoushan Astronomical Society School of Astronomy and Space Science Nanjing University Department of Astronomy Yale University Kuang Yaming Honors School Nanjing University School of Physics Nanjing University

Contrary to the solar system, most exoplanet systems detected hitherto are close-in and compact. One typical system is TRAPPIST-1, which has seven nearly co-planar terrestrial planets all within the orbit of Mercury,including three in the habitable zone. To evaluate the differences in developing sophisticated gravity theories from the solar system, we use N-body integrations to simulate ephemeris and reproduce some important astronomy phenomena observed on the potentially habitable planet TRAPPIST-1e. Retrograde motions of other planets last1–2 orders of magnitude shorter than in the solar system, but occur much more frequently. Transit events of all inner planets can be observed steadily. Except for Kepler's first law, which is hard to notice for low eccentricities of planets, the other two laws can then be precisely verified in 102days, because the areas swept by planets vary by?0.01% and the observed semimajor axes and periods result in constants with theoretical and observation accuracies both ?2%. However, the mean motion correlation implies that the Great Inequality is not always apparent between one pair of planets like Jupiter and Saturn. Furthermore, general relativity can hardly be discovered because it gives rise to perihelion precession of inner planets only ～0.1% of gravity precession, dozens of times smaller than Mercury. Our results support the possibility of developing part of gravity theories by potential exo-civilizations in compact systems like TRAPPIST-1.

关键词： ephemerides extraterrestrial intelligence gravitation planets and satellites: terrestrial planets

An enhanced equivalent input disturbance approach to current control of PMSM with periodic and aperiodic disturbances

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science china(Information Sciences) 2025年第03期68卷 272-285页

作者： Tao YANG Youwu DU Bo LI Weihua CAO Chuanke ZHANG Jinhua SHE School of Electrical & Information Jiangsu University of Technology School of Automation China University of Geosciences School of Engineering Tokyo University of Technology

The current-loop control of a permanent magnet synchronous motor(PMSM) system suffers from periodic and aperiodic disturbances, which result in current ripples and degrade control performance. This paper presents an enhanced equivalent-input-disturbance(EID) approach to reject periodic and aperiodic disturbances in the current loop of a *** additional quasi-resonant compensators(QRCs) are integrated into a conventional EID estimator with a low-pass filter(LPF) to handle the disturbances. The configuration of an enhanced EID(EEID)-based control system for PMSM current loop is explained. An analysis in the frequency domain shows the mechanism of the presented method for rejecting periodic and aperiodic disturbances simultaneously. It reveals that the sensitivity reduction of the system for aperiodic disturbances is mainly determined by the bandwidth of the LPF and that for periodic disturbances is determined by the parameters of the *** stability of the system is analyzed using the Nyquist stability criterion. The design algorithm for system parameters is provided. Compared to the conventional EID approach, the proposed method provides an additional degree of freedom to deal with periodic disturbances. The design of the QRCs is independent of each other, which makes the proposed method flexible and easy to implement. The effectiveness and the superiority of the EEID approach are validated by simulation results of a PMSM system.

关键词： equivalent input disturbance (EID) disturbance rejection permanent magnet synchronous motor (PMSM) periodic and aperiodic disturbances quasi-resonant compensator

同方期刊数据库

Multi-scenario simulation of land use change and its impact on ecosystem services in the northeastern edge of the Qinghai-Xizang Plateau,china

在线全文

学校读者我要写书评

暂无评论

Journal of Arid Land 2025年第2期17卷 145-166页

作者： ZHANG Xuebin LIU Yanni YIN Junfeng SHI Peiji FENG Haoyuan SHI Jing College of Geography and Environmental Science Northwest Normal UniversityLanzhou 730070China Faculty of Geographic Sciences Beijing Normal UniversityBeijing 100875China State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems College of EcologyLanzhou UniversityLanzhou 730000China

The Qinghai-Xizang Plateau(QXP)serves as a crucial ecological barrier in china and Asia,exerting profound influences on global climate and biodiversity *** Tibetan Autonomous Prefecture(hereinafter referred as Gannan Prefecture),located on the northeastern edge of the QXP,represents a fragile alpine ecosystem in which land use change significantly impacts ecosystem services(ESs).This study established a comprehensive framework,utilizing the Patch-generating Land-Use Simulation(PLUS)model coupled with the Integrated Valuation of Ecosystem Services and Tradeoffs(InVEST)model to predict land use patterns under the natural development scenario,cultivated land protection scenario,and ecological protection scenario for Gannan Prefecture by 2030 and evaluated four critical ESs:habitat quality(HQ),water yield(WY),soil retention(SR),and carbon storage(CS).The primary aim is to elucidate the impacts of dynamic land use change on *** results revealed that,from 2000 to 2020,HQ exhibited minimal variation,whereas CS experienced a slight ***,WY and SR showed significant *** the natural development scenario,construction land was projected to increase by 4247.74 hm^(2),primarily at the expense of forest *** cultivated land protection scenario anticipated an increase in farmland by 2634.36 hm^(2),which was crucial for maintaining food *** ecological protection scenario predicted a notable expansion of forest land,accompanied by a restrained development rate of construction *** ecological protection scenario also showed an increase in the ecosystem service index(ESI),encompassing 26.07%of the *** land and grassland emerged as the primary contributors to ESs,while construction land substantially impacted *** bodies exhibited minimal contribution to *** study enhanced the understanding of land use change impacts on ESs in fragile and high-altitude ecosystems,offering essential theoretical framework

关键词： PLUS-InVEST model ecosystem service habitat quality water yield soil retention carbon storage Qinghai-Xizang Plateau

Biomimetic Micro-Nanostructured Evaporator with Dual-Transition-Metal MXene for Efficient Solar Steam Generation and Multifunctional Salt Harvesting

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第5期17卷 16-36页

作者： Ruiqi Xu Hongzhi Cui Na Wei Yang Yu Lin Dai Xiaohua Chen College of Materials Science and Engineering Ocean University of ChinaQingdao 266100People’s Republic of China College of Materials Science and Engineering Shandong University of Science and TechnologyQingdao 266590People’s Republic of China

Solar-driven interfacial evaporation is one of the most attractive approaches to addressing the global freshwater ***,achieving an integrated high evaporation rate,salt harvesting,and multifunctionality in evaporator is still a crucial ***,a novel composite membrane with biomimetic micronanostructured superhydrophobic surface is designed via ultrafast laser etching ***,the double-transition-metal(V_(1/2)Mo_(1/2))_(2)CT_(x)MXene nanomaterials as a photothermal layer,exhibiting the enhanced photothermal conversion performance due to elevated joint densities of states,which enables high populations of photoexcited carrier relaxation and heat release,provides a new insight into the photothermal conversion mechanism for multiple principal element ***,the(V_(1/2)Mo_(1/2))_(2)CT_(x)MXene-200 composite membrane can achieve a high evaporation rate of 2.23 kg m^(−2)h^(−1)under one sun,owing to the enhanced“light trap”effect,photothermal conversion,and high-throughput water ***,the membrane can induce the directed precipitation of salt at the membrane edge,thus enabling salt harvesting for recycling and zero-emission of brine ***,the composite membrane is endowed with excellent multifunctionality of anti-/de-icing,anti-fouling,and antibacterial,overcoming the disadvantage that versatility is difficult to be ***,the evaporator and the promising strategy hold great potential for the practical application of solar evaporation.

关键词： Double‐transition‐metal MXene Micro-nanostructures Solar steam generation Salt harvesting Multifunctionality