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Drought-induced proline is mainly synthesized in leaves and transported to roots in watermelon under water deficit 认领 引用 被引量：12
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作者 Zhongyuan Wang Yongchao Yang +4 位作者 Vivek Yadav Wei Zhao Yaping He Xian Zhang Chunhua Wei 《Horticultural Plant Journal》 SCIE CAS CSCD 2022年第5期615-626,共12页
Proline accumulation has been shown to occur in plants in response to various environmental stresses.Although proline metabolismrelated genes have been functionally characterized,the inter-organ transport of proline i... Proline accumulation has been shown to occur in plants in response to various environmental stresses.Although proline metabolismrelated genes have been functionally characterized,the inter-organ transport of proline in stressed plants remains unclear.In this study,free proline was detected with significant accumulations in the roots,stems,and leaves of watermelon drought-tolerant germplasm M08 and drought-susceptible line Y34 under drought stress.Expression profiling and enzyme activity measurements revealed that ClP5CS1 gene,rather than its paralog ClP5CS2,mainly contributes to the proline synthesis in leaves via the Glu pathway.Additionally,over-expression of the ClP5CS genes significantly enhanced the drought tolerance of transgenic Arabidopsis lines.Furthermore,we confirmed that proline is mainly synthesized in leaves and transported to roots in watermelon under drought stress.Transcriptome and expression analyses revealed that the genes involved in proline metabolism exhibited different expression levels.Specifically,ClP5CS1 was upregulated in leaves and roots,while ClP5CS2 was downregulated under drought stress.Also,415 and 362 differently expressed TFs were identified in roots and leaves,respectively,with the majority upregulated in the former.Ultimately,a model for proline metabolism was proposed.The findings of this study provided new insights into the biosynthesis,transport,and regulatory mechanism of drought-induced proline in plants. 展开更多
关键词 Watermelon Drought stress Proline Inter-organ transport
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Condensation behavior of gaseous phase during transported in the near-substrate boundary layer of plasma spray-physical vapor deposition 认领 引用 被引量：5
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作者 Mei-Jun Liu Guan-Jun Yang 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2021年第8期127-134,共8页
Plasma spray-physical vapor deposition(PS-PVD)has exhibited the potential ability to prepare columnar structures for advanced thermal barrier coatings(TBCs).The coating structure is nominally affected by operating par... Plasma spray-physical vapor deposition(PS-PVD)has exhibited the potential ability to prepare columnar structures for advanced thermal barrier coatings(TBCs).The coating structure is nominally affected by operating parameters,but it is controlled by the type of deposition unit actually and essentially.In order to realize the columnar structure deposited by gaseous phase units,the transition behavior of gaseous phase units to clusters must be fundamentally understood.This work investigated the transport process of gaseous phase units in the PS-PVD near-substrate boundary layer along with the condensation behavior.The Monte Carlo method was used to examine the transport process and condensation behavior of gaseous phase units under different scale boundary layers.Simulation results show that it is easier to form more numerous larger clusters at the edge of the plasma jet than at the center.Based on the understanding of the changes in deposition unit caused by the condensation of gaseous phase in the near-substrate boundary layer of PS-PVD,an outlook towards TBCs with different structures is presented.And it is in good agreement with the experimental data. 展开更多
关键词 Condensation behavior Transport process Cluster Boundary layer PS-PVD
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A Lagrangian-based flame index for the transported probability density function method 认领 引用
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作者 Zhen Lu Hua Zhou +2 位作者 Zhuyin Ren Yue Yang Hong G.Im 《Theoretical & Applied Mechanics Letters》 CAS CSCD 2022年第1期30-34,共5页
We propose a new flame index for the transported probability density function(PDF) method. The flame index uses mixing flux projections of Lagrangian particles on mixture fraction and progress variable directions as t... We propose a new flame index for the transported probability density function(PDF) method. The flame index uses mixing flux projections of Lagrangian particles on mixture fraction and progress variable directions as the metrics to identify the combustion mode, with the Burke-Schumann solution as a reference. A priori validation of the flame index is conducted with a series of constructed turbulent partially premixed reactors. It indicates that the proposed flame index is able to identify the combustion mode based on the subgrid mixing information. The flame index is then applied the large eddy simulation/PDF datasets of turbulent partially premixed jet flames. Results show that the flame index separate different combustion modes and extinction correctly. The proposed flame index provides a promising tool to analyze and model the partially premixed flames adaptively. 展开更多
关键词 Flame index Transported probability density function Partially premixed combustion
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Stabilization of the Soliton Transported Bio-energy in Protein Molecules in the Improved Model 认领 引用 被引量：1
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作者 PANGXiao-Feng LUOYu-Hui 《Communications in Theoretical Physics》 SCIE CAS 2004年第3期470-476,共7页
We study the stabilization of the soliton transported bio-energy by the dynamic equations in the improved Davydov theory from four aspects containing the feature of free motion and states of the soliton at the long-ti... We study the stabilization of the soliton transported bio-energy by the dynamic equations in the improved Davydov theory from four aspects containing the feature of free motion and states of the soliton at the long-time motion and at biological temperature 300 K and behaviors of collision of the solitons by Runge–Kutta method and physical parameter values appropriate to the α-helix protein molecules. We prove that the new solitons can move without dispersion at a constant speed retaining its shape and energy in free and long-time motions and can go through each other without scattering. If considering further influence of the temperature effect of heat bath on the soliton, it is still thermally stable at biological temperature 300 K and in a time as long as 300 ps and amino acid spacings as large as 400, which shows that the lifetime of the new soliton is at least 300 ps, which is consistent with analytic result obtained by quantum perturbation theory. These results exhibit that the new soliton is a possible carrier of bio-energy transport and the improved model is possibly a candidate for the mechanism of this transport. 展开更多
关键词 soliton bio-energy transport thermal stabilization protein
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76nt RNAs are transported axonally into regenerating axons and growth cones.What are they doing there? 认领 引用
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作者 Nicholas A.Ingoglia Binta Jalloh 《Neural Regeneration Research》 SCIE CAS CSCD 2016年第3期390-391,共2页
Successful nerve regeneration requires not only that neurons reconstruct new axons distal to the site of injury,but also those growing axons must navigate through the neuropil to make appropriate synaptic connections ... Successful nerve regeneration requires not only that neurons reconstruct new axons distal to the site of injury,but also those growing axons must navigate through the neuropil to make appropriate synaptic connections with target cells.While this is an imposing task for the thousands of axons that may occupy a regenerating nerve in the peripheral nervous system or a tract inthe central nervous system, the billions of neurons in the developing brain must accomplish similar tasks making connections that number in the trillions. How do neurons do this？ 展开更多
关键词 reconstruct cones distal doing synaptic axonal regeneration occupy transported likely
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Expression and Localization of HSPs in the Liver of Transported Pigs 认领 引用
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作者 BAO En-dong, K. R. Sultan, B. Nowak and J. Hartung( College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095 , P.R.China Department of the Science of Food of Animal Origin , Faculty of Veterinary Medicine, University of Utrecht, TheNetherlands +1 位作者 Institute of Meat Hygiene and Meat Technology, Hannover Veterinary School, Hannover, Germany Institute of Animal Hygiene and Animal Welfare, Hannover Veterinary School, Hannover, Germany) 《Agricultural Sciences in China》 2002年第6期690-695,共6页
To demonstrate the distribution and expression of heat shock proteins (HSPs) in the liver, five kinds of HSPs, namely HSP70, HSP72, HSP86, HSP90 and HSP27 were determined after a long distance transport using immunohi... To demonstrate the distribution and expression of heat shock proteins (HSPs) in the liver, five kinds of HSPs, namely HSP70, HSP72, HSP86, HSP90 and HSP27 were determined after a long distance transport using immunohistochemistry and Western blot. All five HSPs were regularly detected in the liver of both the transported and the control group. Both nuclear and cytoplasmic labeling was present in hepatic cells; however, localization of HSPs was quite different in hepatocytes. The majority of HSP70, HSP72 and HSP27 appeared to predominate in cytoplasm of the hepatocytes. Nuclear signals of HSP90 and HSP86 were most prominent in hepatocytes in which immunostaining in the cytoplasm was relatively weak compared with that in the nucleus. There was subjectively lower staining in the edge of hepatic labule, and lower numbers of HSPs labeled hepatic cells corresponded to light microscopic lesions. The obvious inductions of some HSPs were detected in the liver, especially the HSP90(P<0.01) which belongs to the HSP90 family. However, the obvious reductions of HSP86(P<0.05), which belong to the HSP90 family, and HSP27 (P <0.05), which belong to small families, were detected in stressed pig liver after six hours of long distance transportation. 展开更多
关键词 Pig Transport Stress Heat shock protein Liver
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Temperature Management of Red Blood Cell Solution Transported by Car for Transfusion at Home 认领 引用
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作者 Hiroshi Fujita Yoshiharu Tojo +1 位作者 Takashi Mine Asashi Tanaka 《Open Journal of Blood Diseases》 2020年第2期37-40,共4页
Objective: In Japan, red blood cell (RBC) solution is usually transported by car from a medical institution to the patient’s house for home transfusion. However, there are no regulations for transporting blood by car... Objective: In Japan, red blood cell (RBC) solution is usually transported by car from a medical institution to the patient’s house for home transfusion. However, there are no regulations for transporting blood by car in the medical setting. Therefore, we assessed and compared the methods (containers) used for transporting the RBC solution by car. Materials and Methods: Irradiated RBC solution samples (280 mL) supplied by the Japan Red Cross Society were each divided into two bags. The quality of blood transported by car (1 - 2 hours) in an active transport refrigerator (ATR) (control group) was compared with that transported in a cooler, or styrofoam box (study group). We tested the hemolytic effects of transportation by car, storage, and filtration through a transfusion set on the lactate dehydrogenase (LD) levels in the RBC solutions. Results: Post-filtered LD levels were significantly higher in the RBC solutions transported in a cooler-box with inadequate temperature control when compared to those transported in an ATR with optimal temperature control. However, under conditions of optimal temperature control, the post-filtered LD levels were comparable in the control and study (both cooler and styrofoam boxes) group RBC solutions. Conclusion: Temperature management is critical for the maintenance of the quality of the RBC solution transported by car. 展开更多
关键词 Car Transport Red Blood Cell Solution Hemolysis
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Transported into the Bosom of the Empire? Rethinking How Arthur Conan Doyle Persuades His Readers of British Imperialism in "The Speckled Band" 认领 引用
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作者 Billy Bin Feng Huang 《Journalism and Mass Communication》 2015年第4期194-205,共12页
Melanie C.Green and Timothy C.Brock have proposed their transportation-imagery model of narrative persuasion.They argue that a narrative can evoke imagery in readers'mind and then transport readers into the narrat... Melanie C.Green and Timothy C.Brock have proposed their transportation-imagery model of narrative persuasion.They argue that a narrative can evoke imagery in readers'mind and then transport readers into the narrative world the author has created,in the course of which the author can persuade readers of the beliefs he's put into the narrative.This paper employs this model to rethink how Arthur Conan Doyle persuades his readers of British imperialism in his"The Speckled Band".First,this model considers the vividness of the narrative and readers'participatory response as key factors in readers'transportation.The narratives of"The Speckled Band"are picturesque,and Sherlock Holmes'inferential process has reinforced readers'participatory response.On the other hand,detective fiction usually has the theme of how the detective/law and order beats the criminal/chaos.That is,Doyle persuades his readers that the British Empire will prevail in"The Speckled Band"when Holmes,representing the British imperialism,solves the case and kills Dr.Roylott,who represents the evil and savagery in the British colony.According to Green and Brock's model,it simply means that there are two narratives(i.e.,one is about how the law of the British Empire is challenged,and the other is about how the British Empire's stability is restored),and two complementary transportations before Doyle can successfully persuades his readers.However,if we closely read"'The Speckled Band",we can learn that Holmes,who should have represented British law,is guilty of trespassing or taking the law into his own hands.In other words,the complementarity of the two transportations is compromised.Thus,we can conclude that it is highly questionable whether or not Doyle can transport his readers into the bosom of the British Empire. 展开更多
关键词 Arthur Conan Doyle "The Speckled Band" transport(ation) narrative persuade(-sion) Britishimperialism
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Bio-energy in s-Helix Protein Molecules with Three Properties of Soliton-Transported Channels 认领 引用
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作者 PANG Xiao-Feng LIU Mei-Jie 《Communications in Theoretical Physics》 SCIE CAS 2007年第2X期369-376,共8页
We study numerically the propagating properties of soliton-transported bio-energy excited in the a-helix protein molecules with three channels in the cases of the short-time and long-time motions and its features of c... We study numerically the propagating properties of soliton-transported bio-energy excited in the a-helix protein molecules with three channels in the cases of the short-time and long-time motions and its features of collision at temperature T = 0 and biological temperature T = 300 K by the dynamic equations in the improved Davydov theory and fourth-order Runge-Kutta method, respectively. From these simulation experiments we see that the new solitons in the improved model can move without dispersion at a constant speed retaining its shape and energy in the cases of motion of both short-time or T = 0 and long time or T = 300 K and can go through each other without scattering in their collisions. In these cases its lifetime is, at least, 120 ps at 300 K, in which the soliton can travel over about 700 amino acid residues. This result is consistent with analytic result obtained by quantum perturbed theory in this model. In the meanwhile, the influences of structure disorder of a-helix protein molecules, including the inhomogeneous distribution of amino acids with different masses and fluctuations of spring constant, dipole-dipole interaction, exciton-phonon coupling constant and diagonal disorder, on the solitons are also studied by the fourth-order Runge-Kutta method. The results show that the soliton still is very robust against the structure disorders and thermal perturbation of proteins at biological temperature 300 K. Therefore we can conclude that the new soliton in the a-helix protein molecules with three channels is a possible carrier of bio-energy transport and the improved model is possibly a candidate for the mechanism of this transport. 展开更多
关键词 bio-energy transport soliton protein molecule Runge-Kutta method thermal stabilization
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Outcomes and risk factors of transported patients with extracorporeal membrane oxygenation:An ECMO center experience 认领 引用 被引量：2
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作者 Lingjuan Liu Dingji Hu +9 位作者 Tong Hao Shanshan Chen Lei Chen Yike Zhu Chenhui Jin Jing Wu Haoya Fui Haibo Qiu Yi Yang Songqiao Liu 《Journal of Intensive Medicine》 CSCD 2025年第1期35-42,共8页
Background:Extracorporeal membrane oxygenation(ECMO)has been proven to be a support method and technology for patients with cardiopulmonary failure.However,the transport of patients under ECMO support is challenging g... Background:Extracorporeal membrane oxygenation(ECMO)has been proven to be a support method and technology for patients with cardiopulmonary failure.However,the transport of patients under ECMO support is challenging given the high-risk technical maneuvers and patient-care concerns involved.Herein,we examined the safety of ECMO during the transport of critically ill patients and its impact on mortality rates,to provide more secure and effective transport strategies in clinical practice.Method:To assess the safety of ECMO patient transport,this study conducted a retrospective analysis on critically ill adults who required ECMO support and transport at the intensive care unit(ICU)center between 2017 and 2023.The study utilized standard ECMO transport protocols and conducted a comprehensive statistical analysis of the collected clinical data and transport processes.The 28-day survival rate for ECMO patients was determined using Kaplan-Meier analysis,while logistic regression identified prognostic factors.Result:Out of 303 patients supported with ECMO,111(36.6%)were transported.69.4%of the transport group were male,mean age was(42.0±17.0)years,mean body mass index was(24.4±4.6)kg/m2,and veno-arterial-ECMO accounted for 52.5%.The median transportation distance was 190(interquartile range[IQR]:70-260)km,and the longest distance was 8100 km.The median transit time was 180(IQR:100-260)min,and the maximum duration was 1720 min.No severe adverse events including death or mechanical failure occurred during transportation.The 28-day survival rate was 64.7%(n=196)and ICU survival rate was 56.1%(n=170)for the entire cohort;whereas,the 28-day survival rate was 72.1%(n=80)and ICU survival rate was 66.7%(n=74)in the transport group.A non-significant difference in 28-day survival was observed between the two groups after propensity score matching(P=0.56).Additionally,we found that acute physiology and chronic health evaluation II score(odds ratio[OR]=1.06,P5 mmol/L,OR=2.80,P=0.01),and renal replacement therapy initiation(OR=3.03,P<0.01)were associated with increased mortality risk.Conclusion:Transporting patients on ECMO between medical facilities is a safe procedure that does not increase patient mortality rates,provided it is orchestrated and executed by proficient transport teams.The prognostic outcome for these patients is predominantly influenced by their pre-existing medical conditions or by complications that may develop during the course of ECMO therapy.These results form the basis for the creation of specialized ECMO network hubs within healthcare regions. 展开更多
关键词 Extracorporeal membrane oxygenation Transportation Prognosis
Multi-material and multi-module freestanding microrobot for cargo transportation 认领 引用 被引量：3
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作者 Jian-Miao Zhang Xin-Yi Wu +5 位作者 Qi Duan Fan-Chun Bin Jie Liu Xian-Zi Dong Feng Jin Mei-Ling Zheng 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2026年第1期780-793,共14页
Microrobots play an essential role in early diagnosis and precision medicine with the increasing demands for controllability in bio-medicine and micromanipulation,which can complete the pre-designed behavior under ext... Microrobots play an essential role in early diagnosis and precision medicine with the increasing demands for controllability in bio-medicine and micromanipulation,which can complete the pre-designed behavior under external stimulation.However,most microrobots are currently made of a single material system and focus on fabricating a driving module as the main structure of microrobots.This hinders the integration of diverse functions in one microrobot to fulfill the complex application.Here,a multi-material and multi-module hand-microrobot based on femtosecond laser direct writing technology is proposed,which has a pH-responsive capturing module and a magnetic-responsive transportation module(MRTM).This microrobot can not only respond to pH for capturing and releasing objects,but also respond to magnetic fields for cargo delivery even with obstacles.The two responding modules of the hand-microrobot are fabricated independently,and can collaborate with each other to achieve the delivery of target objects like polystyrene(PS)microsphere(10µm)or 786-O cell by capturing,transporting,and spatial rolling.Besides,the MRTM can be locally fabricated on any prefabricated static structure,so that the whole microrobot can achieve controllable motion.This strategy is expected to be used to manipulate cells,deliver drugs for precise treatment,and environmental treatment. 展开更多
关键词 hand-microrobots multi-module manipulation cell transportation femtosecond laser direct writing
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Effect of crystal morphology of nickel-rich cathode materials on electrochemical stability and ion transport kinetics of sulfide-based all-solid-state batteries 认领 引用 被引量：2
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作者 Shanyan Huang Bi Luo +8 位作者 Zixun Zhang Qi Wang Guihui Yu Xudong Bu Zheng Huang Xiaowei Wang Wei-Li Song Jiafeng Zhang Shuqiang Jiao 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第3期741-745,共5页
Nickel-rich layered oxides are considered highly promising cathode materials for all-solid-state batteries(ASSBs)due to their high theoretical specific capacity and energy density.In this study,a comparison between po... Nickel-rich layered oxides are considered highly promising cathode materials for all-solid-state batteries(ASSBs)due to their high theoretical specific capacity and energy density.In this study,a comparison between polycrystalline and single-crystalline cathode materials was conducted.It was found that,during the charging process,ion transport at the interface of polycrystalline cathodes is significantly influenced by phase transitions and side reactions with the electrolyte,resulting in an irreversible increase in impedance after cycling.Furthermore,the structural stability of the cathode material affects internal ion diffusion kinetics,thereby influencing its electrochemical performance.Unlike single-crystalline materials,ion migration in polycrystalline materials must traverse anisotropic grain boundaries,which,due to anisotropic lattice contraction,evolve into intergranular cracks,leading to reduced ion diffusion kinetics and degraded electrochemical performance.In contrast,single-crystalline cathodes exhibit more stable interfacial resistance and uniform ion transport during charging,ensuring structural stability over longterm cycling.Consequently,at a 0.5 C rate,the single-crystalline cathode maintains a specific capacity of143 m Ah/g after 500 cycles,with a capacity retention of 89.2%,while preserving its intact single-crystal morphology.This study provides valuable new insights into the localized lithium-ion transport behavior in single-crystalline and polycrystalline cathode materials for sulfide-based all-solid-state batteries. 展开更多
关键词 Nickel-rich cathode Sulfide-based solid electrolytes Single-crystalline materials Ion transport kinetics Solid-state batteries
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Modulation of mitochondrial dysfunction:Mechanisms and strategies for the use of natural products to treat stroke 认领 引用 被引量：2
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作者 Na Qin Rujuan Liu +3 位作者 Rong Deng Liuliu Shi Lei Wang Ting Zhu 《Neural Regeneration Research》 SCIE CAS CSCD 2026年第6期2215-2226,共12页
Modulations of mitochondrial dysfunction,which involve a series of dynamic processes such as mitochondrial biogenesis,mitochondrial fusion and fission,mitochondrial transport,mitochondrial autophagy,mitochondrial apop... Modulations of mitochondrial dysfunction,which involve a series of dynamic processes such as mitochondrial biogenesis,mitochondrial fusion and fission,mitochondrial transport,mitochondrial autophagy,mitochondrial apoptosis,and oxidative stress,play an important role in the onset and progression of stroke.With a better understanding of the critical role of mitochondrial dysfunction modulations in post-stroke neurological injury,these modulations have emerged as a potential target for stroke prevention and treatment.Additionally,since effective treatments for stroke are extremely limited and natural products currently offer some outstanding advantages,we focused on the findings and mechanisms of action related to the use of natural products for targeting mitochondrial dysfunction in the treatment of stroke.Natural products achieve neuroprotective through multi-target regulation of mitochondrial dysfunction encompassing the following processes:(1)Mitochondrial biogenesis:Cordyceps and hydroxysafflor yellow A activate the peroxisome proliferator-activated receptor gamma coactivator 1-alphauclear respiratory factor pathway,promote mitochondrial DNA replication and respiratory chain protein synthesis,and thereby restore energy supply in the ischemic penumbra.(2)Mitochondrial dynamics balance:Ginsenoside Rb3 promotes Opa1-mediated neural stem cell migration and diffusion for recovery of damaged brain tissue.(3)Mitochondrial autophagy:Gypenoside XVII selectively eliminates damaged mitochondria via the phosphatase and tensin homolog-induced kinase 1/Parkin pathway and blocks reactive oxygen species and the NOD-like receptor protein 3 inflammasome cascade,thereby alleviating blood-brain barrier damage.(4)Anti-apoptotic mechanisms:Ginkgolide K inhibits Bax mitochondrial translocation and downregulates caspase-3/9 activity,reducing neuronal programmed death induced by ischemia-reperfusion.(5)Oxidative stress regulation:Scutellarin exerts antioxidant properties and improves neurological function by modulating the extracellular signal-regulated kinase 5-Kruppel-like factor 2-endothelial nitric oxide synthase signaling pathway.(6)Intercellular mitochondrial transport:Neuroprotective effects of Chrysophanol are associated with accelerated mitochondrial transfer from astrocytes to neurons.Existing studies have confirmed that natural products exhibit neuroprotective effects through multidimensional interventions targeting mitochondrial dysfunction in both ischemic and hemorrhagic stroke models.However,their clinical translation still faces challenges,such as the difficulty in standardization due to component complexity,insufficient cross-regional clinical data,and the lack of long-term safety evaluations.Future research should aim to integrate new technologies,such as single-cell sequencing and organoid models,to deeply explore the mitochondria-targeting mechanisms of natural products and validate their efficacy through multicenter clinical trials,providing theoretical support and translational pathways for the development of novel anti-stroke drugs. 展开更多
关键词 apoptosis autophagy hemorrhagic stroke ischemic stroke mitochondrial biogenesis mitochondrial dynamics mitochondrial dysfunction modulations mitochondrial transport natural products oxidative stress
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An Object Detection Algorithm Based on Deep Learning and Salient Feature Fusion for Roadside Surveillance Camera 认领 引用 被引量：1
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作者 Yang He Lisheng Jin +3 位作者 Huanhuan Wang Xinyu Sun Zhen Huo Guangqi Wang 《CAAI Transactions on Intelligence Technology》 SCIE EI CSCD 2026年第1期279-295,共17页
In intelligent transportation systems,object detection for a surveillance video is one of the important functions.The performance of existing surveillance video object detection algorithms is affected by the conflict ... In intelligent transportation systems,object detection for a surveillance video is one of the important functions.The performance of existing surveillance video object detection algorithms is affected by the conflict between the features of the objects,which leads to a decline in precision.Therefore,an object detection algorithm based on deep learning and salient feature fusion is proposed.The proposed method introduces a non-weight-sharing network to process the salient features of the image and fuse them with the features extracted from the red blue green branch.Different from the previous solutions,the salient feature extraction branch uses the boundary features and statistical features of the image and fuses the features of the two branches in the efficient layer aggregation networks structure.At the same time,the attention module is used in efficient layer aggregation networks with convolutional block attention module to improve the efficiency of feature utilisation.The training and evaluation are carried out in the constructed surveillance video feature conflict dataset,and eight scenes are constructed in the way of orthogonal experiments.The experimental results show that the performance of object detection can be significantly improved by using the proposed method in the object detection task of the intelligent transportation system surveillance video feature conflict scene. 展开更多
关键词 autonomous vehicle image processing intelligent transportation systems transportation
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Explosive PM2.5growth and health effects during extreme haze in Shanghai,China:Insights from surface and vertical observations 认领 引用 被引量：1
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作者 Wenwen Sun Yang Chen +6 位作者 Shunyao Wang Shenghua Zhang Yuxin Zhang Rui Li Jialiang Feng Jianyu Chen Tiantao Cheng 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第3期666-675,共10页
Vertical observations were used to explore the explosive growth(EG)of PM2.5in Shanghai in 2018 to investigate the rapid evolutionary mechanisms and health effects of a highly severe haze episode.The EG is defined a... Vertical observations were used to explore the explosive growth(EG)of PM2.5in Shanghai in 2018 to investigate the rapid evolutionary mechanisms and health effects of a highly severe haze episode.The EG is defined as the net increase in PM2.5concentration by more than 100μg/m3within 6 or 9 h.The average PM2.5concentration during EG was 118.1μg/m3,dominated by NO3-,NH4+,SO42-(SNA),and organic matter(OM),with a proportion of 31.1%,15.1%,14.8%,and 18.8%,respectively.In addition to being affected by chemical reactions,regional transport was the main influencing factor for OM,but local emissions were the main factor for SNA.Vertical observation results showed that EG events were influenced commonly by local emission,regional transport,and chemical reactions with a different proportion.Moreover,the heterogeneous reaction could possibly cause more severe pollution.The daily average nonaccidental mortality for EG[13.9(95%CI:5.5,25.0)]was about 4.0 times higher than that in Clean Days(CDs)[3.5(1.4,6.3)],and EG episodes caused a more severe effect on cardiovascular disease compared with respiratory disease.Moreover,local emissions and secondary gas-phase oxidation exhibited crucial factors for human health during EG,but regional transport during CDs.To sum up,ground-level observation could not fully explain the process of atmospheric pollution,but the vertical measurements help to understand the regional transport influence on the EG process.In the future,it is recommended that vertical observation should play a vital role in investigating regional heavy pollution episodes. 展开更多
关键词 Explosive growth PM(2.5) Formation mechanism Health risks Vertical observation Regional transport
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CsWRKY57L enhances freezing tolerance through flavonoid accumulation and modulates growth via SWEETs in tea plants 认领 引用 被引量：1
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作者 Jing Peng Enbei Liu +7 位作者 Yedie Wu Jie Wang Miaomiao Xu Nana Li Xinyuan Hao Changqing Ding Xinchao Wang Lu Wang 《Horticultural Plant Journal》 SCIE CAS CSCD 2026年第3期720-734,共15页
Tea plant(Camellia sinensis(L.)O.Kuntze)is a cold-sensitive leaf-harvesting crop whose growth,yield,and processed tea quality are all inhibited by low temperatures.Therefore,identifying the regulatory genes involved i... Tea plant(Camellia sinensis(L.)O.Kuntze)is a cold-sensitive leaf-harvesting crop whose growth,yield,and processed tea quality are all inhibited by low temperatures.Therefore,identifying the regulatory genes involved in tea plant growth and freezing tolerance is crucial for genetic improvement.WRKY transcription factors regulate various plant processes,including growth and development,stress responses,and metabolite biosynthesis.However,the molecular network through which WRKY coordinates these pathways in tea plants remains unclear.In this study,we revealed that CsWRKY57L,a cold-inducible WRKY IIc subfamily member,positively regulated freezing tolerance by directly promoting flavonoid accumulation in tea plants.Transient suppression of CsWRKY57L weakened the freezing tolerance of tea plants by reducing flavonoid content and suppressing the C-repeat-binding factor(CBF)-cold-responsive(COR)gene pathway.In contrast,heterologous overexpression of CsWRKY57L in Arabidopsis had the opposite effect.Additionally,overexpression of CsWRKY57L inhibited reproductive development and accelerated senescence in Arabidopsis.Interaction analysis revealed that CsWRKY57L directly binds to the promoters of CsSWEET1a,CsSWEET15,and AtSWEET15,which encode sugar transporters essential for plant reproductive development,and inhibits their transcription.Overall,the study revealed a dual role of CsWRKY57L in promoting freezing tolerance via flavonoid biosynthesis and inhibiting reproductive development by regulating SWEETs expression.This study uncovers a novel mechanism whereby CsWRKY57L coordinately regulates both stress responses and growth in tea plants,providing a molecular basis for breeding low-temperature-tolerant varieties with restricted reproductive development. 展开更多
关键词 Low temperature resistance CsWRKY57L Reproductive development SWEET sugar transporters Tea plants
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Interscale analysis of sediment clusters amid turbulence 认领 引用 被引量：1
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作者 Wai Hong Ronald Chan Ahmed Elnahhas +3 位作者 Hanul Hwang Lucy J.Brown Andrew J.Banko S.Balachandar 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2026年第1期73-80,共8页
Noncohesive particle clusters are identified and tracked in turbulent flows to determine the breakdown and time evolution of cluster statistics and their implications for interscale mass transfer,which has connections... Noncohesive particle clusters are identified and tracked in turbulent flows to determine the breakdown and time evolution of cluster statistics and their implications for interscale mass transfer,which has connections to the classical turbulent energy cascade and its mass cascade counterpart running in parallel.In particular,the formation and dynamics of sediment and larvae clusters are of interest to coral larvae settlement in coastal regions and particularly the resilience of green-gray coastal protection solutions.Analogous cluster behavior is relevant to cloud microphysics and precipitation initiation,radiation transport and light transmission through colloids and suspensions,heat and mass transfer in particle-laden flows,and viral and pollutant transmission.Following a comparison between various clustering techniques,we adopt a density-based cluster identification algorithm based on its simplicity and efficiency,where particles are clustered based on the number of neighboring particles in their individual spheres of influence.We establish parallels with lattice-based percolation theory,as evident in the power-law scaling of the cluster size distribution near the percolation threshold.The degree of discontinuity of the phase transition associated with this percolation threshold is observed to broaden with larger Stokes numbers and thereby large-scale clustering.The sensitivity of our findings to the employed clustering algorithm is discussed.A novel cluster tracking algorithm is deployed to determine the interscale transfer rate along the particle-number phase-space dimension via accounting of cluster breakup and merger events,extending previous work on the bubble breakup cascade beneath surface breaking waves.Our findings shed light on the interaction between particle clusters and their carrier turbulent flows,with an eye toward transport models incorporating cluster characteristics and dynamics. 展开更多
关键词 Particle-laden flows Particle-laden turbulence Sediment transport Computational fluid dynamics Multiphase turbulence Particle clustering Percolation theory
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Implicit unified gas kinetic particle method for steady-state solution of multiscale phonon transport 认领 引用 被引量：1
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作者 Hongyu Liu Xiaojian Yang +2 位作者 Chuang Zhang Xing Ji Kun Xu 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2026年第2期496-510,共15页
This paper presents a highly efficient implicit unified gas-kinetic particle(IUGKP)method for obtaining steady-state solutions of multi-scale phonon transport.The method adapts and reinterprets the integral solution o... This paper presents a highly efficient implicit unified gas-kinetic particle(IUGKP)method for obtaining steady-state solutions of multi-scale phonon transport.The method adapts and reinterprets the integral solution of the Bhatnagar-Gross-Krook(BGK)equation for time-independent solutions.The distribution function at a given point is determined solely by the surrounding equilibrium states,where the corresponding macroscopic quantities are computed through a weighted sum of equilibrium distribution functions from neighboring spatial positions.From a particle perspective,changes in macroscopic quantities within a cell result from particle transport across cell interfaces.These particles are sampled according to the equilibrium state of their original cells,accounting for their mean free path as the traveling distance.The IUGKP method evolves the solution according to the physical relaxation time scale,achieving high efficiency in large Knudsen number regimes.To accelerate convergence for small Knudsen numbers,an inexact Newton iteration method is implemented,incorporating macroscopic equations for convergence acceleration in the near-diffusive limit.The method also addresses spatial-temporal inconsistency caused by relaxation time variations in physical space through the null-collision concept.Numerical tests demonstrate the method’s excellent performance in accelerating multi-scale phonon transport solutions,achieving speedups of one to two orders of magnitude.The IUGKP method proves to be an efficient and accurate computational tool for simulating multiscale non-equilibrium heat transfer,offering significant advantages over traditional methods in both numerical performance and physical applicability. 展开更多
关键词 Implicit gas kinetic particle method Phonon Boltzmann transport equation Multi-scale heat conduction Steady-state
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Efficient and stable inverted perovskite solar cells employing self-assembled hole-transporting monolayers with enhanced interface interaction 认领 引用 被引量：1
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作者 Botong Li Jie Liu +11 位作者 Boyang Lu Xuepeng Liu Mingyuan Han Weilun Du Ziqiang Su Zedong Lin Wenyong Feng Lei Xiao Zhipeng Shao Yong Ding Songyuan Dai Mohammad Khaja Nazeeruddin 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第1期712-719,I0016,共8页
Molecular tailoring of self-assembled hole-transporting monolayers(SAMs)has been proven as an efficient approach for improving the device performance of inverted perovskite solar cells.Herein,a novel SAM with extended... Molecular tailoring of self-assembled hole-transporting monolayers(SAMs)has been proven as an efficient approach for improving the device performance of inverted perovskite solar cells.Herein,a novel SAM with extended conjugation is designed and synthesized,named NaPh-4PACz.Compared to Ph-4PACz,NaPh-4PACz exhibits a larger adsorption energy with the ITO substrate,enabling the formation of a more uniform and dense film,thereby preventing direct contact between the perovskite and ITO.Additionally,NaPh-4PACz also has a stronger interaction with the perovskite,which can reduce buried interface defects and suppress non-radiative recombination.Consequently,NaPh-4PACz-based devices achieved a power conversion efficiency of 25.48%due to their interfacial“adhesive”ability.Importantly,the stability of the NaPh-4PACz-based devices was significantly improved. 展开更多
关键词 Inverted perovskite solar cells Self-assembled monolayer Hole transport layer Extended conjugation NaPh-4PACz
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The influence of quasi-2-day waves on the transport of CO2 based on WACCM-NEDAS data assimilation 认领 引用 被引量：1
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作者 Sheng-Yang Gu XiaoLong Wang +2 位作者 Hao Chen YuXuan Liu YuSong Qin 《Earth and Planetary Physics》 EI CSCD 2026年第3期463-471,共9页
The distribution and transport of carbon dioxide(CO2)in the middle and upper atmosphere are closely linked to atmospheric dynamical processes,but the influence of planetary waves on CO2 transport remains unclear... The distribution and transport of carbon dioxide(CO2)in the middle and upper atmosphere are closely linked to atmospheric dynamical processes,but the influence of planetary waves on CO2 transport remains unclear.This study aims to investigate the impact of quasi-2-day waves(Q2DWs)on CO2 transport in the stratosphere-mesosphere during the sudden stratospheric warming(SSW)period.On the basis of data assimilation(DA)using the Whole Atmosphere Community Climate Model(WACCM)+Next-generation Ensemble Data Assimilation System(NEDAS)from December 2018 to February 2019,we used the transformed Eulerian mean framework to conduct a diagnostic analysis on Q2DW propagation and amplification.Additionally,we identified unstable regions in the stratosphere between 60°N and 80°N.This configuration facilitates the amplification of Q2DWs through enhanced baroclinic and barotropic instabilities.The results demonstrate that the dynamic features exhibit distinct propagation and amplification characteristics.We also found distinct Q2DWs in CO2 at the middle latitudes of the southern hemisphere,which were mainly induced by the Q2DWs in temperature.Further analysis showed that the anomalous vertical motion during the SSW period could lead to the enhancement of CO2 vertical gradients,which also contributed to the strengthening of Q2DWs in CO2. 展开更多
关键词 quasi-2-day wave sudden stratospheric warming data assimilation CO2transport
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