Review of Scientific Instruments最新文献_第2页

High-definition fusion of multi-modal images of brain gliomas based on AKS-SRNet. 基于AKS-SRNet的脑胶质瘤多模态图像高清融合。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-06-01 DOI: 10.1063/5.0239433

Xiaobao Liu, Nana Liu, Wenjuan Gu, Tingqiang Yao, Jihong Shen, Dan Tang

{"title":"High-definition fusion of multi-modal images of brain gliomas based on AKS-SRNet.","authors":"Xiaobao Liu, Nana Liu, Wenjuan Gu, Tingqiang Yao, Jihong Shen, Dan Tang","doi":"10.1063/5.0239433","DOIUrl":"https://doi.org/10.1063/5.0239433","url":null,"abstract":"Emission computed tomography provides information on the growth and metabolic status of brain gliomas, but its use of radiopharmaceuticals brings radiation risks and financial costs to patients. These problems will be improved by reducing the dose of radiopharmaceuticals, but it will reduce the quality of brain emission computed tomography (ECT) images, which will lead to low resolution, unclear lesion areas, and blurred boundaries of parts of the lesion areas in the magnetic resonance imaging-emission computed tomography (MRI-ECT) fusion image of gliomas. Therefore, a high-definition fusion of multi-modal images of brain glioma based on a super-resolution reconstruction network based on the adaptive kernel selection (AKS-SRNet) is proposed. First, to solve the problem of loss of detailed structural information in the disease region of fusion images, a correlation-driven feature decomposition fusion network based on multi-scale and fine-grained feature extraction was constructed. The multi-scale feature extraction module and the outlook attention module are introduced into the fusion network to extract multi-scale features and retain more detailed features. Second, to solve the problems of low resolution and unclear lesion areas of MRI and ECT fusion images, a super-resolution reconstruction network based on adaptive kernel selection was constructed. A selective kernel attention module is added to the generator of PAUP-ESRGAN to improve the efficiency of the super-resolution reconstruction network generator. Finally, the experimental results show that the fusion image generated by the proposed high-definition fusion network has a less burr-prone and a clearer contour of the lesion area, which is helpful for doctors in analyzing and diagnosing the glioma accurately.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 6","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144286352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A time-synchronized acquisition scheme for marine controlled source electromagnetic transmitter output current. 一种船舶可控源电磁发射机输出电流的时间同步采集方案。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-06-01 DOI: 10.1063/5.0252925

Chentao Wang, Zhibin Ren, Xianhu Luo, Jie Wang, Meng Wang

引用次数: 0

Experimental implementation of an ion-nanowire hybrid system. 离子-纳米线混合系统的实验实现。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-06-01 DOI: 10.1063/5.0260410

M Weegen, P N Fountas, M Poggio, S Willitsch

引用次数: 0

Line-scan imaging for real-time phenotypic screening of C. elegans. 秀丽隐杆线虫实时表型筛选的线扫描成像技术。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-06-01 DOI: 10.1063/5.0238824

Aaron Au, Maximiliano Giuliani, Sean Harrington, Peter Roy, Christopher M Yip

引用次数: 0

A co-axial velocity map imaging spectrometer for polarization-driven ionization. 用于偏振驱动电离的同轴速度图成像光谱仪。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-06-01 DOI: 10.1063/5.0268267

Jianye Huang, Jianfeng Liao, Jianfei Tao, Kefei Wu, Yunfei Feng, Wentao Zhu, Xin Jin, Lifang Tian, Xiao-Jing Liu

引用次数: 0

Free-space and polarization maintaining delivery of terahertz radiation from a quantum cascade laser in a dry dilution refrigerator. 在干燥稀释冰箱中维持量子级联激光器发射太赫兹辐射的自由空间和偏振。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-06-01 DOI: 10.1063/5.0250844

M T Vaughan, W Michailow, R Xia, L Li, M Salih, H E Beere, D A Ritchie, E H Linfield, A G Davies, J R Freeman, J E Cunningham

引用次数: 0

Curved neutron beam window for large vacuum chamber of neutron diffractometer. 中子衍射仪大真空室的弯曲中子束窗。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-06-01 DOI: 10.1063/5.0237249

Jingjing Ma, Wenhai Ji, Donghai Yu, Zhenhong Tan, Wu Xie, Yanyan Wu, Yongji Yu, Zhiduo Li, Tong Wang, Zhiyong Ke, Wen Yin, Yandong Wang, Takashi Kamiyama, Ping Miao

{"title":"Curved neutron beam window for large vacuum chamber of neutron diffractometer.","authors":"Jingjing Ma, Wenhai Ji, Donghai Yu, Zhenhong Tan, Wu Xie, Yanyan Wu, Yongji Yu, Zhiduo Li, Tong Wang, Zhiyong Ke, Wen Yin, Yandong Wang, Takashi Kamiyama, Ping Miao","doi":"10.1063/5.0237249","DOIUrl":"https://doi.org/10.1063/5.0237249","url":null,"abstract":"A curved large-area neutron beam window (NBW) has been designed for the large vacuum chamber of the high-resolution neutron diffractometer at the China Spallation Neutron Source. Compared with the conventional planar NBW, the curved structure can effectively reduce the deformation and stress, featuring a significantly longer lifetime and smaller thickness, which is crucial for improving the signal-noise ratio of diffraction data. Two prototypes of curved NBW with different thicknesses, 0.8 and 1.3 mm, were processed by high-speed milling, and the mechanical properties were studied by both strain gauges and x-ray stress analyzer. The experimental distribution of stress is in good consistency with the finite element analysis. Moreover, fatigue tests over 104 cycles of evacuation and venting demonstrate that the deformations of both prototypes are within the elastic region, which indicates a long life span. Therefore, this study reveals that the curved shape bears advantageous mechanical properties over the planar type for large and thin NBW.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 6","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144258838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A milli-Kelvin atomic force microscope made of glass. 由玻璃制成的毫开尔文原子力显微镜。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-06-01 DOI: 10.1063/5.0260775

Chengyuan Huang, Zhenlan Chen, Mengke Ha, Haoyuan Wang, Qing Xiao, Changjian Ma, Danqing Liu, Zhiyuan Qin, Dawei Qiu, Ziliang Guo, Dingbang Chen, Qianyi Zhao, Yanling Liu, Chengxuan Ye, Zhenhao Li, Guanglei Cheng

引用次数: 0

A novel non-singular fixed-time terminal sliding mode control method for multi-input multi-output systems subject to uncertainties. 针对不确定多输入多输出系统，提出了一种新的非奇异定时终端滑模控制方法。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-06-01 DOI: 10.1063/5.0266102

Bin Guo, JianChun Liao, Xingxing You, Songyi Dian

{"title":"A novel non-singular fixed-time terminal sliding mode control method for multi-input multi-output systems subject to uncertainties.","authors":"Bin Guo, JianChun Liao, Xingxing You, Songyi Dian","doi":"10.1063/5.0266102","DOIUrl":"https://doi.org/10.1063/5.0266102","url":null,"abstract":"This paper introduces a novel fixed-time non-singular terminal sliding mode control (NFTTSM) method for addressing the trajectory tracking problem in multi-input multi-output systems subject to uncertainties. First, a fixed-time disturbance observer (FTDO) is designed to compensate for system parameter uncertainties and external disturbances. Subsequently, a variable-gain fixed-time reaching law (VGFTRL), formulated based on a decision function, is proposed to ensure the rapid convergence of the sliding mode variable to the sliding surface, thereby enhancing system robustness. Furthermore, a novel non-singular terminal sliding mode (NNTSM) surface, constructed using the hyperbolic tangent function, is introduced to guarantee that the system state converges to zero within a fixed time along the sliding surface, effectively improving control accuracy while mitigating singularity issues. Building upon FTDO, VGFTRL, and NNTSM, a non-singular fixed-time terminal sliding mode (NFTTSM) controller is developed to ensure that the system state tracks the desired trajectory within a fixed time, with the proposed control scheme ensuring that the tracking time remains independent of initial conditions, thereby offering enhanced control performance. The fixed-time convergence property of the proposed methodology is rigorously established through theoretical analysis. Finally, a manipulator system is applied to validate the feasibility and superiority of the proposed approach, confirming its effectiveness in handling system uncertainties while ensuring precise and robust trajectory tracking.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 6","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144226432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of the porosity of parts manufactured by electron beam melting using scanning photothermal radiometry. 用扫描光热辐射法研究电子束熔化制件的孔隙率。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-06-01 DOI: 10.1063/5.0272083

Alejandro Mateos-Canseco, Andrzej Kusiak, Jean-Luc Battaglia, Matthieu Museau, François Villeneuve, Alexandre Margueret

引用次数: 0