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FPGA-based plasma sterilization device for wound-edge recognition

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Nanotechnology and Precision Engineering 2024年第3期7卷 56-70页

作者： Huijuan Lu Xiaorong tang Minglei li Xueping Jiang Wenxiang Xiao hua li School of life and Environmental Sciences Guilin University of Electronic TechnologyGuilin 541004People’s Republic of China Guilin URIT MEDICAL Electronic Sales Co. Ltd.Guilin 541004People’s Republic of China

There is a currently a lack of large-area plasma sterilization devices that can intelligently identify the shape of a wound for automatic *** this reason,in this work,a plasma sterilization device with wound-edge recognition was developed using aﬁeld-programmable gate array(FPGA)and a high-performance image-processing platform to realize intelligent and precise sterilization of *** was used to design the mechanical structure of the device,and it was manufactured using 3D *** device used an improvement of the traditional Sobel detection algorithm,which extends the detection of edges in only the x and y directions to eight directions(0○,45○,90○,135○,180○,225○,270○,and 315○),completing the wound-edge detection by adaptive *** device can be controlled according to different shapes of sterilization area to adjust the positioning of a single plasma-jet tube in the horizontal plane for two-dimensional move-ment;the distance between the plasma-jet tube and the surface of the object to be sterilized can be also adjusted in the vertical *** this way,motors are used to move the plasma jet and achieve automatic,efﬁcient,and accurate plasma *** was found that a good sterilization effect could be achieved at both the culture-medium level and the biological-tissue *** ideal sterilization parameters at the culture-medium level were a speed of 2 mm/s and aﬂow rate of 0.6 slm,while at the biological-tissue level,these values were 1 mm/s and 0.6 slm,respectively.

关键词： FPGA Wound-edge recognition Improvement of the Sobel algorithm Plasma Automatic and precise sterilization

Advancements in S-scheme heterojunction materials for photocatalytic environmental remediation

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Journal of Materials Science & Technology 2024年第2期169卷 182-198页

作者： Changliang Nie Xiaohan Wang Ping Lu Yukun Zhu Xin li hua tang School of Environmental Science and Engineering State Key Laboratory of Bio-fibers and Eco-textilesQingdao UniversityQingdao266071China Institute of Biomass Engineering Key Laboratory of Energy Plants Resource and UtilizationMinistry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhou510642China School of Environmental Science and Engineering Shandong UniversityQingdao266237China

Recently,S-scheme heterojunctions have gained considerable attention in the field of photocatalytic environmental remediation as their potential to achieve efficient spatial charge separation coupled with strong redox ***,this review provides an overview of the current state-of-the-art in the development of S-scheme-based photocatalysts for the purification of environmental *** review first covers the fundamentals of heterogeneous photocatalysis for environmental ***,an introduction to the background,mechanism,design principles,and characterization techniques of S-scheme heterojunctions is ***,the review presents a comparison and summary of using various S-scheme photocatalysts for the removal of several target pollutants,such as bacteria,heavy metals,nitrogen oxides,antibiotics,and ***,the modification strategies of S-scheme heterojunction photocatalysts are also ***,a brief discussion of the challenges and prospects associated with S-scheme photocatalytic systems is demonstrated.

关键词： S-scheme heterojunctions Photocatalyst Pollutant Environmental remediation

Quantification of perfluorinated compounds in atmospheric particulate shows potential connection with environmental event

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Journal of Environmental Sciences 2024年第2期136卷 237-247页

作者： hua tang Ying Wang Shengling Si Hongli li David Da Yong Chen National Institute of Metrology 18 BeisanhuandongluChaoyang DistrictBeijing 100029China School of Chemistry and Materials Science Nanjing Normal UniversityNanjing 210023China Si Chuan Zhong Ce Biao Wu Technology Co.Ltd. Sichuan 610052China Department of Chemistry University of British ColumbiaVancouver V6T 1Z1BCCanada

A method of quantification of perfluorinated compounds(PFCs)from atmospheric particulate matter(APM)is described.A single step pretreatment method,selective pressurized liquid extraction(SPLE),was developed to reduce the high matrix background and avoid contamination from commonly used multiple sample pretreatment *** effective sorbent was selected to purify the PFCs during SPLE,followed by liquid chromatography-tandem mass spectrometry(LC–MS/MS),for quantification of *** affecting the SPLE efficiency,including temperature,static extraction time,and number of extraction cycles used,were *** optimum conditions were found to be 120℃,10 min,and 3 cycles,***-MS/MS method was developed to obtain the optimal sensitivity specific to *** method detection limits(MDLs)were 0.006 to 0.48 ng/g for the PFCs studied and the linear response range was from 0.1 to 100 ng/*** ensure accurate values were obtained,each step of the experiment was evaluated and controlled to prevent *** optimized method was tested by performing spiking experiments in natural particulate matter matrices and good rates of recovery and reproducibility were obtained for all target ***,the method was successfully used to measure 16 PFCs in the APM samples collected in Beijing over five years from 2015 to *** is observed that some PFCs follow the trend of total PFC changes,and can be attributed to the environment influencing events and policy enforcement,while others don't seem to change as much with time of the year or from year to year.

关键词： Selective pressurized liquid extraction liquid chromatography-mass spectrometry Perfluorinated compounds Atmospheric particulate matter Pollution control

Harboring CAR-T cells using an injectable scaffold to treat solid tumors

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National Science Review 2024年第5期11卷 91-92页

作者： li tang Institute of Bioengineering (IBI) école polytechnique fédérale de Lausanne (EPFL)

Genetic expression of chimeric antigen receptors (CAR) enables T cells to target and kill cancer cells in an MHCindependent manner, resulting in a potent antitumor response [1]. To date, more than 10 CAR-T cell products have been approved globally for the treatment of hematologic disorders such as relapsed/refractory B-cell acute lymphoblastic leukemia, non-Hodgkin lymphoma, and multiple myeloma [2,3].

关键词： IMMUNOTHERAPY CANCER

Polarization dependence of gain and amplified spontaneous Brillouin scattering noise analysis for fiber Brillouin amplifier

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Chinese Physics B 2019年第9期28卷 253-257页

作者： Kuan-lin Mu Jian-Ming Shang li-hua tang Zheng-Kang Wang Song Yu Yao-Jun Qiao School of Information and Communication Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China Institute of Information Photonics and Optical Communications Beijing University of Posts and TelecommunicationsBeijing 100876China

The polarization dependences of gain and amplified spontaneous Brillouin scattering(ABS) noise for fiber Brillouin amplifier(FBA) are analyzed through theories, simulations, and *** vector propagation equations for calculating the gain of the probe signal and the ABS noise are derived and analyzed in the Stokes *** simulations and experiments, we prove that the gain of the probe signal and the ABS noise are strongly dependent on the relative state of polarization(SOP) of the pump and probe *** closer the relative SOP of the pump and probe signals is, the more obvious ABS noise suppression effect will be brought by increasing the power of the input probe signal.

关键词： fiber Brillouin amplifier state of polarization stimulated Brillouin scattering spontaneous Brillouin scattering

Multi-field Split Curvature Wavefront Sensing and its Application in the Large Field Survey Telescope

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Research in Astronomy and Astrophysics 2024年第8期24卷 60-74页

作者： Zhixu Wu Yiming Zhang Jianan Cong hua Bai Yong Xia Rongxin tang Ming li Zhengyang li Xiangyan Yuan Institute of Space Science and Technology Nanchang UniversityNanchang 330031China Nanjing Institute of Astronomical Optics&Technology CASNanjing 210042China University of Chinese Academy of Sciences NanjingNanjing 211135China

The image quality of a large field survey telescope with a fast focal ratio of the primary mirror is high sensitivity to the optical elements’misalignments and the primary mirror’s *** maintain good optical performance,the perturbations need to be aligned,and the tomographic reconstruction of these perturbations can be derived from wavefront sensing with multi-field points for *** work undertakes a comprehensive examination related to the implementation and optimization of a multi-field split curvature wavefront sensing system,including defocus distance,signal pre-processing,deblending of overlapped doughnuts,field-dependent correction,and distorted coordinate *** also conduct experiments to demonstrate the application and performance of a multi-field split curvature wavefront sensing system in *** the context of the decentering of the secondary mirror,the coefficient of determination(R)attains a high value of 0.993,indicating a robust linearity between the coma coefficients and the decentering of the secondary mirror.A comparative analysis of the simulated and experimental results shows that the difference between them is less than 0.1λ.

关键词： Instrumentation high angular resolution-Techniques photometric-Techniques image processing

Polylactic acid micro/nanoplastic-induced hepatotoxicity: Investigating food and air sources via multi-omics

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Environmental Science and Ecotechnology 2024年第5期21卷 294-308页

作者： hua Zha Shengyi Han Ruiqi tang Dan Cao Kevin Chang Lanjuan li State Key Laboratory for Diagnosis and Treatment of Infectious Diseases National Clinical Research Center for Infectious DiseasesNational Medical Center for Infectious DiseasesCollaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesThe First Affiliated HospitalZhejiang University School of MedicineHangzhouChina Department of Statistics The University of AucklandAucklandNew Zealand

Micro/nanoplastics(MNPs)are detected in human liver,and pose significant risks to human *** exposure to MNPs derived from non-biodegradable plastics can induce toxicity in mouse ***,nasal exposure to non-biodegradable plastics can cause airway dysbiosis in ***,the hepatotoxicity induced by foodborne and airborne biodegradable MNPs remains poorly *** we show the hepatotoxic effects of biodegradable polylactic acid(PLA)MNPs through multi-omics analysis of various biological samples from mice,including gut,fecal,nasal,lung,liver,and blood *** results show that both foodborne and airborne PLA MNPs compromise liver function,disrupt serum antioxidant activity,and cause liver ***,foodborne MNPs lead to gut microbial dysbiosis,metabolic alterations in the gut and serum,and liver transcriptomic *** MNPs affect nasal and lung microbiota,alter lung and serum metabolites,and disrupt liver *** gut Lachnospiraceae_NK4A136_group is a potential biomarker for foodborne PLA MNP exposure,while nasal unclassified_Muribaculaceae and lung Klebsiella are potential biomarkers for airborne PLA MNP *** relevant results suggest that foodborne PLA MNPs could affect the“gut microbiota-gutliver”axis and induce hepatoxicity,while airborne PLA MNPs could disrupt the“airway microbiota-lungliver”axis and cause *** findings have implications for diagnosing PLA MNPs-induced hepatotoxicity and managing biodegradable materials in the *** current study could be a starting point for biodegradable MNPs-induced *** research is needed to verify and inhibit the pathways that are crucial to MNPs-induced hepatotoxicity.

关键词： Micro/nanoplastics Hepatotoxicity Microbiota dysbiosis Metabolic disruption Transcriptomic dysregulation

Identifying the best common factor model via exploratory eactor analysis

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Applied Mathematics(A Journal of Chinese Universities) 2024年第1期39卷 24-33页

作者： HE Bao-hua tang Rui TAGN Qi-yi School of Big Data Fuzhou University of International Studies and TradeFuzhou 350202China School of Mathematics Sun Yat-Sen UniversityGuangzhou 510275China Department of Computer Science University of BathUK Institute of Insect Science Zhejiang UniversityHangzhou 310058China.

Currently,there is no solid criterion for judging the quality of the estimators in factor *** paper presents a new evaluation method for exploratory factor analysis that pinpoints an appropriate number of factors along with the best method for factor *** proposed technique consists of two steps:testing the normality of the residuals from the fitted model via the Shapiro-Wilk test and using an empirical quantified index to judge the quality of the factor *** are presented to demonstrate how the method is implemented and to verify its effectiveness.

关键词： factor analysis Shapiro-Wilk normality residuals

一种两自由度的压电-电磁复合能量收集器(英文)

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2014年第9期15卷 711-722页

作者： Hong-yan WANG li-hua tang Yuan GUO Xiao-biao SHAN Tao XIE College of Computer and Control Engineering Qiqihar University State Key Laboratory of Robotics and System Harbin Institute of Technology Department of Mechanical Engineering University of AucklandAuckland 1010 New Zealand

研究目的:对一种两自由度的压电-电磁复合能量收集器进行发电性能研究。创新要点:建立了一种两自由度压电-电磁复合能量收集器发电性能的数学模型,该数学模型可以评估两自由度压电-电磁复合能量收集器中压电元件、电磁元件以及系统总输... 详细信息

研究目的:对一种两自由度的压电-电磁复合能量收集器进行发电性能研究。创新要点:建立了一种两自由度压电-电磁复合能量收集器发电性能的数学模型,该数学模型可以评估两自由度压电-电磁复合能量收集器中压电元件、电磁元件以及系统总输出功率。研究方法:对一种两自由度的压电-电磁复合能量收集器进行数学建模,并实验验证数学模型的正确性。基于实验测试得到的系统参数值,理论研究压电元件和电磁元件的机电耦合系数对不同能量收集器发电性能的影响关系,并对几种能量收集器的发电能力进行对比分析。重要结论:对于非强耦合(弱或中间耦合)的两自由度机电转换器,复合能量收集器(压电+电磁)具有比单一能量收集器(压电或电磁)更高的发电能力。

关键词：振动复合能量收集两自由度模型压电电磁