期刊：
Science of The Total Environment,2024年906:167663 ISSN：0048-9697
通讯作者：
Yin, GF
作者机构：
[Yin, Gaofei; Yin, GF; Xie, Jiangliu; Ma, Dujuan; Chen, Rui] Southwest Jiaotong Univ, Fac Geosci & Environm Engn, Chengdu 610031, Peoples R China.;[Zhao, Wei] Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China.;[Xie, Qiaoyun] Univ Western Australia, Sch Engn, Perth, WA 6009, Australia.;[Wang, Cong] Cent China Normal Univ, Sch Urban & Environm Sci, Key Lab Geog Proc Anal & Simulat Hubei Prov, Wuhan 430079, Peoples R China.;[Lin, Shangrong; Yuan, Wenping] Sun Yat Sen Univ, Guangdong Prov Data Ctr Terr & Marine Ecosyst Carb, Sch Atmospher Sci, Zhuhai 519000, Peoples R China.
通讯机构：
[Yin, GF ] S;Southwest Jiaotong Univ, Fac Geosci & Environm Engn, Chengdu 610031, Peoples R China.
关键词：
Climatic limitations;Light use efficiency model;Plant photosynthesis;Tibetan plateau
摘要：
Plant photosynthesis plays an essential role in regulating the global carbon cycle. Therefore, it is essential to understand the limitations imposed by climate on plant photosynthesis to comprehend the impacts of climate change on land carbon dynamics. In this study, taking gross primary productivity as a direct representation of photosynthesis, we employed a light use efficiency model (i.e., the revised EC-LUE) and factorial analysis method to quantify the spatiotemporal variation of temperature- and water-limitations on plant photosynthesis over the Tibetan Plateau (TP) grasslands during growing season (May to October) in 1983-2018. Results revealed a clear spatiotemporal pattern of the temperature- and water-limitations: temperature is the primary climatic limiting factor in the eastern TP, while water is the primary climatic limiting factor in the western TP; the water- and temperature-limitations prevail in summer and spring/autumn, respectively. The water- and temperature-limitations intensified and alleviated, respectively, during 1983 through 2018. There also was a widespread shift from temperature-limitation to water-limitation in the TP, particularly in midsummer (August). Our findings demonstrated the shifting relative importance of climatic limitations on plant photosynthesis under changing climate, which is crucial for predicting future terrestrial carbon cycle dynamics.
摘要：
Sediment yields in different slope sections on heterogeneous slopes. Note: (a) MTL/MDL; (b) MDL/MTL; (c) MTL/LBC; (d) LBC/MTL; (e) LBC/MDL; (f) MDL/LBC. MTL, MDL and LBC represent the simulated slopes filled with soils derived from nodular limestone, mud‐like limestone and limestone breccia. For heterogeneous slopes, upslopes were the primary contributors to slope deposits and accounted for a substantial portion of sediment yield. Besides, the parent materials of upslopes are a crucial factor influencing the source‐sink relationship. Abstract Understanding erosion, sediment sources and the spatial distribution along heterogeneous slopes is essential for soil and water conservation. In this study, soils derived from nodular limestone, mud‐like limestone and limestone breccia (abbreviated as SMTL, SMDL and SLBC, respectively) were utilized to establish artificial homogeneous and heterogeneous slopes. The homogeneous slopes MTL, MDL and LBC represent SMTL‐, SMDL‐ and SLBC‐filled‐ slopes, respectively. The heterogeneous slopes were abbreviated as MTL/MDL, MDL/LBC and LBC/MTL. Rare earth elements (REEs; lanthanide, cerium and ytterbium) were used to tag soils on the upper and lower slope sections to track sediment transport and deposition. The results showed that for homogeneous slopes, the LBC slope was the most severely eroded, followed by the MDL and MTL slopes. For heterogeneous slopes, the order of erosion was LBC/MTL > MTL/MDL > MDL/LBC. Upslope sections contributed a sizable portion of the total sediment yield, ranging from 51% to 79%. Over time, the difference in the sediment contribution between the upslope and downslope regions decreased and reached equilibrium. Runoff rates on heterogeneous slopes demonstrated an inverse function (R2 > 0.75) in contrast to a logarithmic distribution (R2 > 0.87) on homogeneous slopes. Heterogeneous slopes displayed minimal intersegment variation and the absence of a consistent ordering of the magnitude of hydraulic parameters. Conversely, the hydraulic parameters of homogeneous slopes were consistently ordered across the slope sections. For sediment transport, all slopes exhibited suspension‐dominated flow with percentages greater than 89%. However, the particle size distribution of the sediment of heterogeneous slopes exhibited greater diversity and complexity because of the coexistence of distinct soils. These findings underscore the importance of customized strategies for soil and water conservation in environments characterized by diverse soil parent materials.
作者机构：
[Wang, Ying; Ge, Kun] Jiangxi Normal Univ, Coll City Construct, Dept Engn Management & Real Estate, Nanchang, Peoples R China.;[Liu, Xiaoyuan] Jiangxi Normal Univ, Coll Fine Arts, Dept Environm Design, Nanchang, Peoples R China.;[Lu, Xinhai] Huazhong Univ Sci & Technol, Coll Publ Adm, Dept Land Management, Wuhan, Peoples R China.;[Ke, Shangan] Cent China Normal Univ, Sch Publ Adm, Dept Land Resources Management, Wuhan, Peoples R China.;[Liu, Xiaoyuan; Liu, XY] Jiangxi Normal Univ, Coll Fine Arts, Dept Environm Design, Nanchang 330022, Jiangxi, Peoples R China.
通讯机构：
[Liu, XY ] J;[Ke, SA ] C;Jiangxi Normal Univ, Coll Fine Arts, Dept Environm Design, Nanchang 330022, Jiangxi, Peoples R China.;Cent China Normal Univ, Sch Publ Adm, Dept Land Resources Management, Wuhan 430079, Hubei, Peoples R China.
关键词：
Green transition of urban land use;Industrial integration;Spatio-temporal differences;Convergence mechanisms
摘要：
Revealing the spatial differences and the convergence mechanisms of Green Transition of Urban Land Use (GTULU) in the context of industrial integration is of great significance for formulating differentiated industrial development strategies, accelerating the process of industrial integration, and exploring synergistic enhancement paths of GTULU. In this paper, 107 prefecture-level and above cities in the Yangtze River Economic Belt (YREB) are taken as research objects, and the entropy value method, exploratory spatial data analysis model and spatial convergence model are comprehensively applied to analyze the spatio-temporal differences and spatial convergence of the GTULU under the background of industrial integration. The study shows that: (1) from 2003 to 2021, the level of GTULU in the YREB has been increasing, with the mean value growing from 0.09 to 0.14, but there are still significant spatial differentiation and spatial correlation characteristics, and the regional imbalance phenomenon of GTULU is more and more obvious as time goes by. (2) The GTULU of the YREB and its upstream, midstream, and downstream regions all exhibit a temporal evolution characteristic of increasing fluctuations. (3) There is no sigma-convergence in GTULU in the YREB and its upstream, middle-stream, and downstream regions. However, there are all significant absolute beta convergence and conditional beta convergence. Moreover, under the combined influence of government management, technological input, industrial structural adjustment, and spatial impact, the convergence rate of the YREB has significantly accelerated, from 1.98% to 2.31%, and the convergence effect exhibits marked heterogeneity.
期刊：
Journal of King Saud University - Computer and Information Sciences,2024年36(1):101869 ISSN：1319-1578
通讯作者：
Wang, XG
作者机构：
[Wang, Xiaoguang; Zhao, Wanli; Wang, Shutong; Wang, XG] Wuhan Univ, Sch Informat Management, Wuhan 430072, Peoples R China.;[Wang, Shutong] Cent China Normal Univ, Natl Engn Res Ctr E Learning, Wuhan 430079, Peoples R China.;[Li, Duantengchuan] Wuhan Univ, Sch Comp Sci, Wuhan 430072, Peoples R China.;[Wang, Jing] Chongqing Univ Posts & Telecommun, Sch Automat, Chongqing 400065, Peoples R China.;[Wang, Xiaoguang; Wang, XG; Wang, Jing] Wuhan Univ, Intellectual Comp Lab Cultural Heritage, Wuhan 430072, Peoples R China.
通讯机构：
[Wang, XG ] W;Wuhan Univ, Sch Informat Management, Wuhan 430072, Peoples R China.;Wuhan Univ, Intellectual Comp Lab Cultural Heritage, Wuhan 430072, Peoples R China.
关键词：
Head pose estimation;Label distribution learning;Gaussian distribution;Asymmetric;Feature similarity
摘要：
Head pose estimation plays a pivotal role in various applications, including augmented reality and human–computer interaction within intelligent museum environments. Head pose estimation conventionally relies on hard labels. However, acquiring the “ground truth” through subjective means introduces an element of uncertainty into the labels for head pose estimation. The introduction of soft labels offers a potential remedy for this uncertainty. However, existing head pose estimation methods based on soft labels neglect the asymmetry of head pose. After careful observation, two types of asymmetry have been identified in human head pose: within angle and between angle asymmetry. Taking these two characteristics into account, we have devised a Double Asymmetric Distribution Learning (DADL) network model for the precise estimation of head pose angles. This model employs distinct soft label distribution mechanisms to capture within-angle and between-angle nuances in head pose variations. Thereby enhancing the interpretability, generalization capability, and classification accuracy of head pose estimation models. Extensive experiments were conducted on various widely recognized benchmarks, including the AFLW2000 and BIWI datasets. The results substantiate substantial advantages of our model over conventional approaches.
作者机构：
[Li, Duantengchuan; Li, Bing; Xia, Tao] Wuhan Univ, Sch Comp Sci, Wuhan 430072, Peoples R China.;[Wang, Jing] Chongqing Univ Posts & Telecommun, Sch Automat, Chongqing 400065, Peoples R China.;[Shi, Fobo] Cent China Normal Univ, Natl Engn Res Ctr Elearning, Wuhan 430079, Peoples R China.;[Zhang, Qi; Zhang, Q] Cent China Normal Univ, Sch Informat Management, Wuhan 430079, Peoples R China.;[Li, Bing] Hubei Luojia Lab, Wuhan 430079, Peoples R China.
通讯机构：
[Li, DTC; Li, B ] W;[Zhang, Q ] C;Wuhan Univ, Sch Comp Sci, Wuhan 430072, Peoples R China.;Cent China Normal Univ, Sch Informat Management, Wuhan 430079, Peoples R China.;Hubei Luojia Lab, Wuhan 430079, Peoples R China.
关键词：
Link prediction;Knowledge graph embedding;Shallow interaction;Deep interaction;Attention mechanism;Vector tokenization
摘要：
Inferring missing information from current facts in a knowledge graph (KG) is the target of the link prediction task. Currently, existing methods embed the entities and relations of KG as a whole into a low-dimensional vector space. Nonetheless, they ignore the multi-level interactions (shallow interactions, deep interactions) among the finer-grained sub-features of entities and relations. To overcome these limitations, we present a shallow-to-deep feature interaction for knowledge graph embedding (SDFormer). It takes into account the interpretability of sub-feature tokens of entities and relations and learns shallow-to-deep interaction information between entities and relations at a more fine-grained level. Specifically, entity and relation vectors are decomposed into sub-features to represent multi-dimensional information. Then, a shallow-to-deep feature interaction method is designed to capture multi-level interactions between entities and relations. This process enriches the feature representation by modeling the interaction between sub-features. Finally, a 1-X scoring function is utilized to calculate the score of each knowledge triplet. The experimental results on several benchmark datasets show that SDFormer obtains competitive performance results and more efficient training efficiency on other comparative models and because of the shallow-to-deep feature interaction between entities and relations.
作者：
Wang, Tong;Cui, Jianqun;Chang, Yanan;Huang, Feng;Yang, Yi
期刊：
Electronics,2024年13(5):868- ISSN：2079-9292
通讯作者：
Cui, JQ
作者机构：
[Huang, Feng; Wang, Tong] Cent China Normal Univ, Sch Phys Sci & Technol, 152 Luoyu Rd, Wuhan 430079, Peoples R China.;[Cui, Jianqun; Huang, Feng; Chang, Yanan; Wang, Tong; Cui, JQ] Cent China Normal Univ, Sch Comp Sci, 152 Luoyu Rd, Wuhan 430079, Peoples R China.;[Yang, Yi] NE Illinois Univ, Dept Comp Sci, Chicago, IL 60625 USA.
通讯机构：
[Cui, JQ ] C;Cent China Normal Univ, Sch Comp Sci, 152 Luoyu Rd, Wuhan 430079, Peoples R China.
关键词：
opportunistic mobile networks;energy-efficient;geographic information
摘要：
Opportunistic mobile networks, as an important supplement to the traditional communication methods in unique environments, are composed of mobile communication devices. It is a network form that realizes message transmission by using the opportune encounter of these mobile communication devices. Consequently, mobile communication devices necessitate periodic contact detection in order to identify potential communication opportunities, thereby leading to a substantial reduction in the already limited battery life of such devices. Previous studies on opportunistic networks have often utilized geographic information in routing design to enhance message delivery rate. However, the significance of geographic information in energy conservation has been overlooked. Furthermore, previous research on energy-efficient routing has lacked diversification in terms of the methods employed. Therefore, this paper proposes a dynamic co-operative energy-efficient routing algorithm based on geographic information perception (DCEE-GIP) to leverage geographic information to facilitate dynamic co-operation among nodes and optimize node sleep time through probabilistic analysis. The DCEE-GIP routing and other existing algorithms were simulated using opportunistic network environment (ONE) simulation. The results demonstrate that DCEE-GIP effectively extends network service time and successfully delivers the most messages. The service time of DCEE-GIP increased by 8.05 similar to 31.11%, and more messages were delivered by 14.82 similar to 115.9%.
摘要：
This study developed a prediction method to determine the distribution of phthalate esters (PAEs) in indoor dust. A gradient boosting decision tree model (GBRT) was trained by using 267 samples in Shanghai, including PAEs concentrations in indoor dust and data obtained from continuous monitoring, as well as the survey of indoor environment. Environmental exposure, residents' lifestyle, and building characteristics data were collected from 8 cities in China. Based on this, the well -trained GBRT model accurately predicted PAEs concentrations, with goodness of fit (R-2) > 0.94, mean absolute error (MAE) approaching 0, and mean squared error (MSE) approaching 0. This study identified key relationships between input parameters and PAEs concentrations. The average increment of PAEs concentration was greater than 50 % when using more than 2 electronic devices in bedroom. Diisobutyl phthalate (DiBP) concentration increased by approximately 200 % when cleaning frequency was less than once every fortnight. Bis (2-ethylhexyl) phthalate (DEHP) concentration increased by over 43 % when dampness -related exposure indicators exceeding 3, and by up to 74 % with extensive usage of polyvinyl chloride (PVC) floorings. Furthermore, the study found higher PAEs concentrations in southern China compared to northern cities.
摘要：
An electrochemcial synthesis of indoline‐fused polycycles by constructing both the five‐ and six‐membered heterocyclic rings in a single step from arylamide‐tethered ynones has been developed, which provides facile access to various indoline‐based tetracyclic 6/5/6/6 skeletons with highly regioselective control in a sustainable, metal‐ and oxidant‐free condition. Abstract Indoline‐fused polycyclic scaffolds are virtually universal in biological and pharmaceutical. Here we demonstrate a facile electrooxidative cascade cyclization for indoline‐based derivatives, employing amidyl radicals with ynones under mild conditions. The efficient method enables the formation of two new C−N and C−C bonds in a single step with high regioselectivity. Various indoline‐based tetracyclic 6/5/6/6 skeletons can be achieved through a biscyclization/dehydrogenation cascade process. Additionally, this electrochemical strategy proceeds in a sustainable metal‐ and oxidant‐free condition, with H2 being the solely byproduct.
摘要：
Due to its controllable maneuverability, wide coverage, and low cost, unmanned aerial vehicle (UAV) has great potential in post-disaster rescue, cargo transport and emergency communication. Considering its limited onboard energy, energy -efficient UAV communication is a challenge. This research examines the security of simultaneous wireless information and power transfer (SWIPT) systems assisted by intelligent reflecting surfaces (IRS) and UAVs while considering the flight energy of rotary-wing UAVs. Specifically, an IRS is mounted on a UAV to enhance the quality of legitimate transmission, and artificial noise (AN) is introduced into the base station (BS) to reduce eavesdropping quality. The power splitting (PS) technology is adopted at ground devices (GDs) to simultaneously decode information and harvest energy. First, we jointly design the BS transmit beamforming, UAV-IRS phase shifts and trajectory/velocity as well as GDs PS ratio with the aim of maximizing the sum secrecy rate of all GDs. Then, an iterative algorithm is developed to address the formulated problem. In particular, additional variables are introduced to handle this complicated objective function, and the original problem is decoupled into multiple sub-problems, which can be solved alternately by invoking the successive convex approximation (SCA) and semidefinite relaxation (SDR) techniques. Finally, numerical results demonstrate that the proposed scheme exhibits a substantial performance in the security rate of SWIPT systems assisted by UAV-IRS, and its performance is improved by at least 12% compared to benchmark schemes at the flight energy budget e(thr) = 5KJ and the number of reflecting elements N-r = 25.
作者机构：
[Wang, Fei; Wang, F; Kong, Deyi] Hubei Univ Technol, Sch Sci, Wuhan 430068, Peoples R China.;[Xu, Jun] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.
通讯机构：
[Wang, F ] H;Hubei Univ Technol, Sch Sci, Wuhan 430068, Peoples R China.
摘要：
We propose a scheme to generate nonreciprocal entanglement between an yttrium iron garnet (YIG) sphere and two nitrogen -vacancy -center ensembles by magnon Kerr effects in a transmission -line resonator. By driving the YIG sphere appropriately, strong Kerr nonlinearities emerge and then induce magnon parametric amplification and magnon frequency shift, resulting in the appearance of optimal entanglements. Depending on the direction of the bias magnetic field, macroscopic nonreciprocal entanglement is realized in this all -solid-state quantum system, which may find potential applications in chiral quantum information processing.
作者：
Zhou, Rui;Chen, Menglin L. N.;Shi, Xintong;Ren, Yan;Yu, Zihao;...
期刊：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION,2024年72(2):2058-2063 ISSN：0018-926X
通讯作者：
Chen, MLN;Lin, H
作者机构：
[Zhou, Rui; Chen, Menglin L. N.] Hong Kong Polytech Univ, Dept Elect & Elect Engn, Hong Kong, Peoples R China.;[Zhou, Rui; Ren, Yan; Yu, Zihao; Lin, Hai; Lin, H; Shi, Xintong] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Liu, Y.; Tian, Yu] Hubei Univ, Sch Phys, Dept Phys, Wuhan 430062, Hubei, Peoples R China.;[Liu, Y.] Lanzhou Univ, Lanzhou Ctr Theoret Phys, Key Lab Theoret Phys Gansu, Lanzhou 730000, Gansu, Peoples R China.;[Liu, Y.] Lanzhou Univ, Key Lab Quantum Theory & Applicat MoE, Lanzhou 730000, Gansu, Peoples R China.
通讯机构：
[Lin, H ] C;[Chen, MLN ] H;Hong Kong Polytech Univ, Dept Elect & Elect Engn, Hong Kong, Peoples R China.;Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.
摘要：
Waveguides are fundamental components in communication systems. However, they suffer from reflection and scattering losses at sharp routes or defects. The breakthrough in developing topological photonic crystals (PhCs) provides promising solutions to robust signal transmission. In this work, we propose a new mechanism for protecting wave-guiding modes by decorating the boundaries of a conventional waveguide with valley-Hall PhCs. This special layout enables the robust propagation of conventional transverse electric (TE) waves against defects and bends. Moreover, the proposed waveguide is compatible with the substrate-integrated waveguide (SIW). High-efficient mode conversion from the SIW to the proposed waveguide is achievable. By leveraging the idea of topology to conventional waveguides, we provide a powerful and practical tool that can largely improve the performance of microwave and millimeter-wave integrated circuits while reserving the features of wave-guiding modes.
摘要：
The observational data (e.g., the timing data and magnetic tilt angles chi) of young pulsars can be used to probe some critical issues about the internal physics of neutron stars (NSs), for instance, the number of precession cycles xi and the internal magnetic field configuration (IMFC) of NSs. Evolution of the dipole magnetic field B-d of NSs may play an important role in determining the final results. In this work, a power-law form is adopted to describe the decay of B-d. In such a scenario, the IMFC and xi of young pulsars with an ordinary B-d similar to 1012-1013 G and a steady braking index n are investigated. Since the tilt angle change rates chi(center dot) of pulsars with n < 3 can be theoretically predicted, a test on the power-law decay model can thus be made by comparing the theoretical values to that obtained from observations. However, such a comparison can only be made on the Crab pulsar currently, and the results show that the power-law decay model is inconsistent with the Crab's observations. We suggest that rather than decay, the Crab's B-d should increase with time at a rate similar to 12-14 G/s. A definite conclusion on the validity of the power-law decay model for pulsars with ordinary B-d may be given if chi(center dot) of other pulsars could be measured.
期刊：
BRIEFINGS IN BIOINFORMATICS,2024年25(2) ISSN：1467-5463
通讯作者：
Peng, YH
作者机构：
[Xu, Wang; Peng, Yunhui; Zhang, Houfang; Peng, YH; Zhao, Yunjie] Cent China Normal Univ, Inst Biophys, Wuhan, Peoples R China.;[Xu, Wang; Peng, Yunhui; Zhang, Houfang; Peng, YH; Zhao, Yunjie] Cent China Normal Univ, Dept Phys, Wuhan, Peoples R China.;[Guo, Wenhan] Univ Texas El Paso, Computat Sci Program, El Paso, TX USA.;[Jiang, Lijun] Cent China Normal Univ, Sch Life Sci, Wuhan, Peoples R China.
通讯机构：
[Peng, YH ] C;Cent China Normal Univ, Inst Biophys, Wuhan, Peoples R China.;Cent China Normal Univ, Dept Phys, Wuhan, Peoples R China.
关键词：
histone/nucleosome interaction;interaction network;histone cancer mutation;nucleosome binding mode;epigenetic regulation
摘要：
Nucleosomes represent hubs in chromatin organization and gene regulation and interact with a plethora of chromatin factors through different modes. In addition, alterations in histone proteins such as cancer mutations and post-translational modifications have profound effects on histone/nucleosome interactions. To elucidate the principles of histone interactions and the effects of those alterations, we developed histone interactomes for comprehensive mapping of histone-histone interactions (HHIs), histone-DNA interactions (HDIs), histone-partner interactions (HPIs) and DNA-partner interactions (DPIs) of 37 organisms, which contains a total of 3808 HPIs from 2544 binding proteins and 339 HHIs, 100 HDIs and 142 DPIs across 110 histone variants. With the developed networks, we explored histone interactions at different levels of granularities (protein-, domain- and residue-level) and performed systematic analysis on histone interactions at a large scale. Our analyses have characterized the preferred binding hotspots on both nucleosomal/linker DNA and histone octamer and unraveled diverse binding modes between nucleosome and different classes of binding partners. Last, to understand the impact of histone cancer-associated mutations on histone/nucleosome interactions, we complied one comprehensive cancer mutation dataset including 7940 cancer-associated histone mutations and further mapped those mutations onto 419,125 histone interactions at the residue level. Our quantitative analyses point to histone cancer-associated mutations' strongly disruptive effects on HHIs, HDIs and HPIs. We have further predicted 57 recurrent histone cancer mutations that have large effects on histone/nucleosome interactions and may have driver status in oncogenesis.
作者机构：
[Xue, Mei; Xue, Hongjin; Qiu, Jianfeng; Zhao, Xin; Zhang, Meng] Shandong First Med Univ & Shandong Acad Med Sci, Sch Radiol, Jinan 250000, Peoples R China.;[Yang, Jiaxin] Shandong First Med Univ & Shandong Acad Med Sci, Sch Basic Med Sci, Jinan 250000, Peoples R China.;[Sun, Wei] Hainan Normal Univ, Coll Chem & Chem Engn, Key Lab Laser Technol & Optoelect Funct Mat Hainan, Haikou 571158, Peoples R China.;[Zhu, Zhihong] Cent China Normal Univ, Inst Nanosci & Nanotechnol, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.
通讯机构：
[Qiu, JF ] S;[Zhu, ZH ] C;Shandong First Med Univ & Shandong Acad Med Sci, Sch Radiol, Jinan 250000, Peoples R China.;Cent China Normal Univ, Inst Nanosci & Nanotechnol, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.
摘要：
Chemodynamic therapy (CDT) is a promising cancer treatment strategy. However, mild acidic pH, insufficient H(2)O(2) content, and overexpressed glutathione (GSH) in the tumor microenvironment (TME) severely impair CDT efficiency. In this study, a novel therapeutic nanosystem (Cu/ZIF-8/Vc-Ca/HA) was constructed for H(2)O(2) self-supply and GSH depletion co-enhanced CDT. Typically, calcium ascorbate (Vc-Ca) loaded on the surface of Cu(2+)-doped ZIF-8 (Cu/ZIF-8) was designed as an original source for H(2)O(2) generation, and a hyaluronic acid (HA) shell was subsequently coated to act as a tumor-targeted "guide" and protective layer. Along with the HA shell disintegrated in the TME, exposed Cu/ZIF-8/Vc-Ca dissociated in the tumor acidic microenvironment, thus triggering the release of Vc-Ca and Cu(2+). Vc-Ca selectively produced H(2)O(2) in tumor cells, which provided abundant H(2)O(2) for boosting Fenton-like reactions. Meanwhile, the released Cu(2+) could get converted into Cu(+) by consuming excess intracellular GSH, which could reduce the tumor antioxidant capability of the nanosystem. Moreover, byproduct Cu(+) reacted with abundant H(2)O(2) by a highly efficient Fenton-like reaction to generate toxic ˙OH. Biological assays indicated that the Cu/ZIF-8/HA@Vc-Ca nanosystem showed significant anticancer activity by enhancing the CDT process. This study may provide a new strategy for improving the effectiveness of CDT.
通讯机构：
[Hu, P ; Yang, Z] H;Hubei Univ Technol, Sch Sci, Wuhan 430068, Peoples R China.
关键词：
aqueous NH4+-ion batteries;one pot synthesis;prussian blue analogues;reversible electrochemical reaction
摘要：
Ammonium‐ion batteries: NH4+‐rich nickel hexacyanoferrate was successfully synthesized through a facile one‐pot method. It exhibits excellent electrochemical performances as cathode material for ammonium‐ion batteries which can be attributed to reversible redox reaction and durable structure. Abstract Rechargeable aqueous batteries based on ammonium‐ion (NH4+) redox reactions shows great potential for large‐scale energy‐storage due to its plentiful supplies, environmental friendliness, intrinsic security, and sustainability. Prussian blue analogues (PBAs) are regarded to be one of the most promising electrode materials owning to high energy storage density, ease of synthesis, and excellent electrochemical performances. However, the synthesis of ammonium rich Prussian blue analogues is too complicated. Herein, a one pot synthesis of NH4+‐rich nickel hexacyanoferrate (NNiHCF) is developed and the NH4+ storage chemistry is investigated. NNiHCF cathode is coupled with an activated carbon (AC) anode and (NH4)2SO4 aqueous electrolyte to assemble ammonium‐ion batteries. The aqueous full cell demonstrates good electrochemical performance, such as 50.2 mAh g−1 at the current rate of 2 C, and 60 % capacity retention in 5000 cycles. Furthermore, the fundamental characteristics of the reversible redox reaction and the durable structure of NNiHCF are revealed by X‐ray diffraction (XRD) and electrochemical measurements. This work proposes a facile method for the synthesis of ammonium‐rich Prussian.
摘要：
Zinc metal batteries (ZMBs) have received a lot of attention due to their high capacity, proper redox potential and low cost. However, zinc anodes suffer from serious dendritic problems and side reactions, resulting in poor cycling stability of zinc ion batteries. Herein, organic additive trimethyl phosphate (TMP) is introduced into inexpensive ZnSO4 electrolyte to stabilize Zn anode. TMP exhibits bifunctional properties in this cost-effective electrolyte system. It prefers adsorbing on (002) plane of zinc which leads to preferential crystal growth and uniform zinc deposition. Moreover, TMP can reshape the original hydrogen bond network, regulate the solvation structure and inhibit the parasitic reaction generated by water. As a result, the zinc anode with TMP addition could maintain 2000 h at a current density of 0.5 mA cm−2 which is superior to bare zinc anode. When paired with V2O5 cathode, the full cell also shows excellent cyclic performance. Such a low-cost bifunctional additive would offer a strategy for stabilizing Zn plating/stripping behaviors and suppressing side reactions in mild aqueous electrolyte.
摘要：
In this paper, we construct a bounce inflation cosmological scenario in the framework of the modified symmetric teleparallel gravity, namely f(Q) theory, and investigate the tensor perturbations therein. As is well-known, the tensor perturbations generated in the very early Universe (inflation and pre-inflation regions) can account for the primordial gravitational waves (PGWs) that are to be detected by the next generation of GW experiments. We discuss the stability condition of the tensor perturbations in the bounce inflation process and investigate in detail the evolution of the perturbation variable. The general form of the tensor power spectrum is obtained both for large as well as small scale modes. As a result, we show both kinds of modes (short or long wavelength modes), and the tensor spectrum may get a positive tilt in the parametric range where the tensor perturbation proves to be stable-this interestingly hints an enhancement of gravitational waves' amplitude in the background of the f(Q) bounce-inflation scenario. Moreover, we study the LQC-like scenario as a specific case of our model, in which, the primordial tensor power spectrum turns out to be nearly scale-invariant on both small and large scales.
通讯机构：
[Tan, HT ; Xiong, H ] H;[Li, J ] Z;[Ding, MS ] D;Dalian Polytech Univ, Basic Educ Dept, Dalian 116034, Peoples R China.;Huazhong Normal Univ, Dept Phys, Wuhan 430079, Peoples R China.
关键词：
cavity quantum electrodynamics;hybrid magnonics;magnomechanics;optomechanics;quantum optics;quantum information
摘要：
Hybrid quantum systems based on magnons in magnetic materials have made significant progress in the past decade. They are built based on the couplings of magnons with microwave photons, optical photons, vibration phonons, and superconducting qubits. In particular, the interactions among magnons, microwave cavity photons, and vibration phonons form the system of cavity magnomechanics (CMM), which lies in the interdisciplinary field of cavity QED, magnonics, quantum optics, and quantum information. Here, we review the experimental and theoretical progress of this emerging field. We first introduce the underlying theories of the magnomechanical coupling, and then some representative classical phenomena that have been experimentally observed, including magnomechanically induced transparency, magnomechanical dynamical backaction, magnon-phonon cross-Kerr nonlinearity, etc. We also discuss a number of theoretical proposals, which show the potential of the CMM system for preparing different kinds of quantum states of magnons, phonons, and photons, and hybrid systems combining magnomechanics and optomechanics and relevant quantum protocols based on them. Finally, we summarize this review and provide an outlook for the future research directions in this field.
作者：
Aaij, R.;Abdelmotteleb, A. S. W.;Beteta, C. Abellan;Abudinen, F.;Ackernley, T.;...
期刊：
Journal of High Energy Physics,2024年(2) ISSN：1029-8479
通讯作者：
Belyaev, I
作者机构：
[Ketel, T.; Tuning, N.; Usachov, A.; de Boer, J.; Lukashenko, V.; Galati, M. D.; Heijhoff, K.; Magdalinski, D.; Akiba, K.; Aaij, R.; Snoch, A.; Biolchini, A.; Jans, E.; Greeven, L. M.; Geertsema, R. E.; Pellegrino, A.; Gabriel, E.; Merk, M.; van Veghel, M.; Koppenburg, P.; Soares, M. Senghi; Klaver, S.; Gras, C. Sanchez; Raven, G.; Sole, S. Ferreres; Kostiuk, I.; Hulsbergen, W.] Nikhef Natl Inst Subatom Phys, Amsterdam, Netherlands.;[Liu, F. L.; Monk, M.; Fujii, Y.; Egede, U.; Lane, J. J.; Henderson, R. D. L.; Hadavizadeh, T.; Song, R.; Ward, J. A.; Walton, E. J.] Monash Univ, Sch Phys & Astron, Melbourne, Vic, Australia.;[Da Graca, U. De Freitas Carneiro; Massafferri, A.; De Miranda, J. M.; Falcao, L. N.; Bediaga, I. B.; Torres, M. Cruz; Machado, D. Torres; Gomes, A.; dos Reis, A. C.; Santoro, L.] CBPF, Rio De Janeiro, Brazil.;[De Paula, B. Souza; Lopes, J. H.; Goicochea, J. M. Otalora; Polycarpo, E.; Gandelman, M.; Rangel, M. S.; Hicheur, A.; Garcia, L. Meyer; Rodrigues, F. Ferreira; De Paula, L.; Nasteva, I.; Amato, S.] Univ Fed Rio de Janeiro, Rio de Janeiro, Brazil.;[Zheng, X. Z.; Ma, G. M.; Wang, Z.; Qu, S.; Qin, N.; Xu, L.; Tou, D. Y.; Wang, J.; Li, A.; Zhang, Y. Z.; Hu, X.; Song, Y.; Tan, Y.; Gong, G.; Lian, Z.; Kang, Y.; Zhu, X.; Yang, D.; Mu, H.; Zeng, M.; Dong, C.; Zhang, L.] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China.
通讯机构：
[Belyaev, I ] I;INFN, Sez Roma La Sapienza, Rome, Italy.
关键词：
B Physics;Branching fraction;Hadron-Hadron Scattering
摘要：
A study of B-c(+) -> chi(c) pi(+) decays is reported using proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13TeV, corresponding to an integrated luminosity of 9 fb(-1). The decay B-c(+) -> chi(c2)pi(+) is observed for the first time, with a significance exceeding seven standard deviations. The relative branching fraction with respect to the B-c(+) -> J/psi pi(+) decay is measured to be BBc+ ->chi c2 pi+/BBc+ -> (J/psi pi+) = 0.37 +/- 0.06 +/- 0.02 +/- 0.01, where the first uncertainty is statistical, the second is systematic, and the third is due to the knowledge of the chi(c2) -> J/psi gamma branching fraction. No significant B-c(+) -> chi(+)(c1 pi) signal is observed and an upper limit for the relative branching fraction for the B-c(+) -> chi(c1)pi(+) and B-c(+) -> chi(c2)pi(+) decays of BBc+ ->chi c1 pi+/BBc+ -> chi(c2)pi(+) < 0.49 is set at the 90% confidence level.
作者：
Aaij, R.;Abdelmotteleb, A. S. W.;Beteta, C. Abellan;Abudinen, F.;Ackernley, T.;...
期刊：
Journal of High Energy Physics,2024年(2) ISSN：1029-8479
通讯作者：
Aaij, R
作者机构：
[Ketel, T.; Tuning, N.; Usachov, A.; de Boer, J.; Lukashenko, V.; Galati, M. D.; Heijhoff, K.; Akiba, K.; Aaij, R.; Aaij, R; Snoch, A.; Biolchini, A.; Jans, E.; Greeven, L. M.; Geertsema, R. E.; Pellegrino, A.; Gabriel, E.; Merk, M.; van Veghel, M.; Butter, J. S.; Koppenburg, P.; Soares, M. Senghi; Klaver, S.; Gras, C. Sanchez; Raven, G.; Sole, S. Ferreres; Kostiuk, I.; Schubiger, M.; Hulsbergen, W.] Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands.;[Baptista de Souza Leite, J.; De Freitas Carneiro Da Graca, U.; Massafferri, A.; Cruz Torres, M.; De Miranda, J. M.; Falcao, L. N.; Bediaga, I. B.; Gomes, A.; Torres Machado, D.; dos Reis, A. C.; Santoro, L.] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil.;[Lopes, J. H.; Polycarpo, E.; Souza De Paula, B.; Souza De Almeida, F. L.; Gandelman, M.; Rangel, M. S.; Ferreira Rodrigues, F.; Hicheur, A.; Otalora Goicochea, J. M.; Gomes, A.; De Paula, L.; Nasteva, I.; Amato, S.; Meyer Garcia, L.] Univ Fed Rio de Janeiro, Rio De Janeiro, Brazil.;[Wang, Z.; Qu, S.; Qin, N.; Ren, Z.; Tou, D. Y.; Wang, J.; Li, A.; Hu, X.; Song, Y.; Tan, Y.; Gong, G.; Lian, Z.; Kang, Y.; Qi, H. R.; Zhu, X.; Luo, Y.; Yang, D.; Mu, H.; Zeng, M.; Dong, C.; Zhang, L.] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China.;[Lu, Y.; Li, Y.; Yuan, X.; Sheng, S.; Li, T.; Wang, J.; Chen, S.; Xu, Z.; Tobin, M.; Miao, D.; Jiang, X.; Batsukh, B.; Zou, Q.; Feng, M.; Liu, S.; Xiang, Z.] Inst High Energy Phys IHEP, Beijing, Peoples R China.
摘要：
The first measurement of the Z boson production cross-section at centre-of-mass energy v s = 5.02TeV in the forward region is reported, using pp collision data collected by the LHCb experiment in year 2017, corresponding to an integrated luminosity of 100 +/- 2 pb-1. The production cross-section is measured for final-state muons in the pseudorapidity range 2.0 <. < 4.5 with transverse momentum pT > 20 GeV/c. The integrated cross-section is determined to be sZ.mu+mu- = 39.6 +/- 0.7(stat) +/- 0.6(syst) +/- 0.8(lumi) pb for the di-muon invariant mass in the range 60 < M mu mu < 120 GeV/c2. This result and the differential cross-section results are in good agreement with theoretical predictions at next-to-next-to-leading order in the strong coupling constant. Based on a previous LHCb measurement of the Z boson production cross-section in pPb collisions at v sNN = 5.02TeV, the nuclear modification factor RpPb is measured for the first time at this energy. The measured values are 1.2+0.5 -0.3(stat) +/- 0.1(syst) in the forward region (1.53 < y* mu < 4.03) and 3.6+1.6 -0.9(stat)+/- 0.2(syst) in the backward region (-4.97 < y* mu < -2.47), where y* mu represents the muon rapidity in the centre-of-mass frame.
