At this exhibition,as global expert in jacquard weaving solutions,Jiangsu S&S Intelligent Science And Technology Co.,Ltd.focuses on launching the SLX cam series jacquard machines.This equipment adopts servo direct...At this exhibition,as global expert in jacquard weaving solutions,Jiangsu S&S Intelligent Science And Technology Co.,Ltd.focuses on launching the SLX cam series jacquard machines.This equipment adopts servo direct-drive technology,which can reduce energy consumption by over 20%compared with traditional motor systems,and achieves highprecision control,efficient energy utilization,intelligent control.Precision process design The SLX cam jacquard machine adopts optimized shedding cam curve,featuring long effective shedding time and more stable operation.The low-center-of-gravity design minimizes the vibration and noise of the machine frame,while the camshaft box body formed by one-time processing ensures extremely high mounting accuracy of the conjugate cam.The equipment adopts a fully sealed design,which has good dust-proof effect and attractive appearance.The easily adjustable sensor disc assembly facilitates maintenance.These design details reflect S&S's pursuit of exquisite product quality.展开更多
With the recent advances in neoantigen identification,peptide-based cancer vaccines offer substantial potential in the field of immunotherapy.However,rapid clearance,low immunogenicity,and insufficient antigen-present...With the recent advances in neoantigen identification,peptide-based cancer vaccines offer substantial potential in the field of immunotherapy.However,rapid clearance,low immunogenicity,and insufficient antigen-presenting cell(APC)uptake limit the efficacy of peptide-based cancer vaccines.This review explores the barriers hindering vaccine efficiency,highlights recent advancements in synthetic delivery systems,and features strategies for the key delivery steps of lymph node(LN)drainage,APC delivery,cross-presentation strategies,and adjuvant incorporation.This paper also discusses the design of preclinical studies evaluating vaccine efficiency,including vaccine administration routes and murine tumor models.展开更多
Porcelain insulator is an important component of power transmission systems,and its condition detection is essential to ensure safe operation of the power grid.Nevertheless,it is difficult for existing detection model...Porcelain insulator is an important component of power transmission systems,and its condition detection is essential to ensure safe operation of the power grid.Nevertheless,it is difficult for existing detection models to effectively solve the contradiction between detection accuracy and resource consumption.To address this issue,a high-precision lightweight insulator defect detection model(BCM-YOLO)based on an improved YOLOv8 is proposed.Firstly,bidirectional feature pyramid network(BiFPN),with a simplified bidirectional information flow mechanism,is employed to replace the path aggregation network with feature pyramid network in YOLOv8 to alter the feature fusion mode,thereby reducing the model size.Secondly,a cross-stage partial Bottleneck with 2 convolutions partially replaced by a context-guided block(C2f_CG)structure with parameter sharing is designed using the improved context-guided block to optimise the cross-stage partial Bottleneck with 2 convolutions(C2f)modules,thus further decreasing the number of model parameters.Finally,multiscale dilated attention is introduced into the BiFPN network to enhance the perception ability of different scales of features to improve the detection performance.Experimental results indicate that compared to YOLOv8s,the BCM-YOLO model reduces the number of parameters by 50.5%,lowers floating-point operations by 31.3%and increases mean average precision at intersection over union=0.5(mAP0.5)by 2.8%.The proposed model not only improves detection accuracy but also decreases parameter counts,making it more suitable for deployment on edge devices.展开更多
This study investigates the effect of nonuniform heating and temperature-dependent viscosity on transient free convective flow in a porous material adjacent to a semi-infinite upright plate.Such scenarios are relevant...This study investigates the effect of nonuniform heating and temperature-dependent viscosity on transient free convective flow in a porous material adjacent to a semi-infinite upright plate.Such scenarios are relevant to applications such as the cooling of electronic devices,solar energy systems,and geophysical processes.The governing equations are transformed into dimensionless form and subsequently solved using the CrankNicolson technique.The results reveal that velocity increases with increasing viscosity parameter(ζ=0,2,4)at all cross-sections,while the temperature decreases at x=0.25 and 0.5,but rises at x=0.75,with the maximum free-stream velocity occurring at x=0.75 forζ=2.Additionally,velocity and temperature attain their highest values near the plate,with the boundary layers growing over time.Eventually,both velocity and temperature stabilize,signifying the attainment of a steady-state condition.The local Nusselt number exhibits an increasing trend with increasing Darcy,Prandtl,and Grashof numbers,indicating improved heat transfer,while increasing viscosity contributes to a reduction in local skin friction.Moreover,nonuniform heating leads to the highest temperature at x=0.5,which decreases at x=0.75,and reaches its lowest value at x=0.25.展开更多
The precise control of optical polarization states has emerged as a cornerstone of photonic engineering,underpinning information encoding,optical processing systems,and quantum stateresolved transmission protocols[1-3...The precise control of optical polarization states has emerged as a cornerstone of photonic engineering,underpinning information encoding,optical processing systems,and quantum stateresolved transmission protocols[1-3].Birefringent crystals exhibit optical anisotropy owing to distinct refractive indices along crystallographic axes,thereby distinguishing them from isotropic optical materials.展开更多
Optical transfer delay(OTD)is essential for distributed coherent systems,optically controlled phased arrays,fiber sensing systems,and quantum communication systems.However,existing OTD measurement techniques typically...Optical transfer delay(OTD)is essential for distributed coherent systems,optically controlled phased arrays,fiber sensing systems,and quantum communication systems.However,existing OTD measurement techniques typically involve trade-offs among accuracy,range,and speed,limiting the application in the fields.Herein,we propose a single-shot OTD measurement approach that simultaneously achieves high-accuracy,long-range,and high-speed measurement.A microwave photonic phase-derived ranging with a nonlinear interval microwave frequency comb(MFC)and a discrete frequency sampling technique is proposed to conserve both frequency and time resources,ensuring high-accuracy and ambiguity-free measurements.In the proof-of-concept experiment,a delay measurement uncertainty at the 10^(-9) level with a single 10μs sampling time is first reported,to our knowledge.The method is also applied to coherently combine two distributed signals at 31.8 GHz,separated by a 2 km optical fiber.A minimal gain loss of less than 0.0038 d B compared to the theoretical value was achieved,corresponding to an OTD synchronization accuracy of 0.3 ps.展开更多
Although there are thousands of research papers on crustal permeability,this is the first book-length treatment of the subject.The topic of crustal permeability is of broad interest in light of the controlling effect ...Although there are thousands of research papers on crustal permeability,this is the first book-length treatment of the subject.The topic of crustal permeability is of broad interest in light of the controlling effect of permeability on diverse geologic processes and also timely in light of the practical challenges associated with emerging technologies such as hydraulic fracturing for oil and gas production(‘fracking’),enhanced geothermal systems,and geologic carbon sequestration.展开更多
文摘At this exhibition,as global expert in jacquard weaving solutions,Jiangsu S&S Intelligent Science And Technology Co.,Ltd.focuses on launching the SLX cam series jacquard machines.This equipment adopts servo direct-drive technology,which can reduce energy consumption by over 20%compared with traditional motor systems,and achieves highprecision control,efficient energy utilization,intelligent control.Precision process design The SLX cam jacquard machine adopts optimized shedding cam curve,featuring long effective shedding time and more stable operation.The low-center-of-gravity design minimizes the vibration and noise of the machine frame,while the camshaft box body formed by one-time processing ensures extremely high mounting accuracy of the conjugate cam.The equipment adopts a fully sealed design,which has good dust-proof effect and attractive appearance.The easily adjustable sensor disc assembly facilitates maintenance.These design details reflect S&S's pursuit of exquisite product quality.
基金supported by the U.S.National Institutes of Health,National Cancer Institute Grant R01CA257563.
文摘With the recent advances in neoantigen identification,peptide-based cancer vaccines offer substantial potential in the field of immunotherapy.However,rapid clearance,low immunogenicity,and insufficient antigen-presenting cell(APC)uptake limit the efficacy of peptide-based cancer vaccines.This review explores the barriers hindering vaccine efficiency,highlights recent advancements in synthetic delivery systems,and features strategies for the key delivery steps of lymph node(LN)drainage,APC delivery,cross-presentation strategies,and adjuvant incorporation.This paper also discusses the design of preclinical studies evaluating vaccine efficiency,including vaccine administration routes and murine tumor models.
基金supported by the National Natural Science Foundation of China(52473293).
文摘Flexible electronics advancement intensifies thermal management needs.Radiative cooling shows promise but faces implementation challenges.Integration into diverse flexible electronics demands application-specific materials and processes.A comprehensive review systematically analyzing these strategies is lacking.This work examines both technologies’historical development,synthesizes radiative cooling implementation strategies across electronic systems,and critically evaluates persistent challenges.It aims to provide actionable guidance for advancing practical applications.
基金National Natural Science Foundation of China,Grant/Award Number:52307157Scientific Research Fund of Hunan Provincial Education Department,Grant/Award Number:21C0169Postgraduate Scientific Research Innovation Project of Hunan Province,Grant/Award Number:CX20210825。
文摘Porcelain insulator is an important component of power transmission systems,and its condition detection is essential to ensure safe operation of the power grid.Nevertheless,it is difficult for existing detection models to effectively solve the contradiction between detection accuracy and resource consumption.To address this issue,a high-precision lightweight insulator defect detection model(BCM-YOLO)based on an improved YOLOv8 is proposed.Firstly,bidirectional feature pyramid network(BiFPN),with a simplified bidirectional information flow mechanism,is employed to replace the path aggregation network with feature pyramid network in YOLOv8 to alter the feature fusion mode,thereby reducing the model size.Secondly,a cross-stage partial Bottleneck with 2 convolutions partially replaced by a context-guided block(C2f_CG)structure with parameter sharing is designed using the improved context-guided block to optimise the cross-stage partial Bottleneck with 2 convolutions(C2f)modules,thus further decreasing the number of model parameters.Finally,multiscale dilated attention is introduced into the BiFPN network to enhance the perception ability of different scales of features to improve the detection performance.Experimental results indicate that compared to YOLOv8s,the BCM-YOLO model reduces the number of parameters by 50.5%,lowers floating-point operations by 31.3%and increases mean average precision at intersection over union=0.5(mAP0.5)by 2.8%.The proposed model not only improves detection accuracy but also decreases parameter counts,making it more suitable for deployment on edge devices.
文摘This study investigates the effect of nonuniform heating and temperature-dependent viscosity on transient free convective flow in a porous material adjacent to a semi-infinite upright plate.Such scenarios are relevant to applications such as the cooling of electronic devices,solar energy systems,and geophysical processes.The governing equations are transformed into dimensionless form and subsequently solved using the CrankNicolson technique.The results reveal that velocity increases with increasing viscosity parameter(ζ=0,2,4)at all cross-sections,while the temperature decreases at x=0.25 and 0.5,but rises at x=0.75,with the maximum free-stream velocity occurring at x=0.75 forζ=2.Additionally,velocity and temperature attain their highest values near the plate,with the boundary layers growing over time.Eventually,both velocity and temperature stabilize,signifying the attainment of a steady-state condition.The local Nusselt number exhibits an increasing trend with increasing Darcy,Prandtl,and Grashof numbers,indicating improved heat transfer,while increasing viscosity contributes to a reduction in local skin friction.Moreover,nonuniform heating leads to the highest temperature at x=0.5,which decreases at x=0.75,and reaches its lowest value at x=0.25.
基金supported by the National Key Research and Development Program of China(2021YFB3601502)National Natural Science Foundation of China(22193044,22361132544,22335007,52172012)+5 种基金CAS Project for Young Scientists in Basic Research(YSBR-024)Xinjiang Major Science and Technology Project(2021A01001)Tianshan Talent Project(2022TSYCJU0001,2022TSYCCX0078)Xinjiang University 2024 Outstanding Doctoral Students’Innovation Project(XJU2024BS053)Postdoctoral Fellow-Ship Program(Grade C)(GZC20232959)Tianchi Talent Program of Xinjiang Uygur Autonomous Region。
文摘The precise control of optical polarization states has emerged as a cornerstone of photonic engineering,underpinning information encoding,optical processing systems,and quantum stateresolved transmission protocols[1-3].Birefringent crystals exhibit optical anisotropy owing to distinct refractive indices along crystallographic axes,thereby distinguishing them from isotropic optical materials.
基金National Natural Science Foundation of China(62271249,62075095)Fundamental Research Funds for the Central UniversitiesFunding for Outstanding Doctoral Dissertation in NUAA(BCXJ24-09)。
文摘Optical transfer delay(OTD)is essential for distributed coherent systems,optically controlled phased arrays,fiber sensing systems,and quantum communication systems.However,existing OTD measurement techniques typically involve trade-offs among accuracy,range,and speed,limiting the application in the fields.Herein,we propose a single-shot OTD measurement approach that simultaneously achieves high-accuracy,long-range,and high-speed measurement.A microwave photonic phase-derived ranging with a nonlinear interval microwave frequency comb(MFC)and a discrete frequency sampling technique is proposed to conserve both frequency and time resources,ensuring high-accuracy and ambiguity-free measurements.In the proof-of-concept experiment,a delay measurement uncertainty at the 10^(-9) level with a single 10μs sampling time is first reported,to our knowledge.The method is also applied to coherently combine two distributed signals at 31.8 GHz,separated by a 2 km optical fiber.A minimal gain loss of less than 0.0038 d B compared to the theoretical value was achieved,corresponding to an OTD synchronization accuracy of 0.3 ps.
文摘Although there are thousands of research papers on crustal permeability,this is the first book-length treatment of the subject.The topic of crustal permeability is of broad interest in light of the controlling effect of permeability on diverse geologic processes and also timely in light of the practical challenges associated with emerging technologies such as hydraulic fracturing for oil and gas production(‘fracking’),enhanced geothermal systems,and geologic carbon sequestration.
