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Pluggable multitask diffractive neural networks based on cascaded metasurfaces

Opto-Electronic Advances 2024年第2期7卷 23-31页

作者： Cong He Dan Zhao fei Fan Hongqiang Zhou Xin Li Yao Li Junjie Li fei dong Yin-Xiao Miao Yongtian Wang Lingling Huang Beijing Engineering Research Center of Mixed Reality and Advanced Display Key Laboratory of Photoelectronic Imaging Technology and System of Ministry of Education of ChinaSchool of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China Institute of Modern Optics Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network TechnologyNankai UniversityTianjin 300350China Department of Physics and Optoelectronics Faculty of ScienceBeijing University of TechnologyBeijing 100124China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100191China Beijing Aerospace Institute for Metrology and Measurement Technology Beijing 100076China

Optical neural networks have significant advantages in terms of power consumption,parallelism,and high computing speed,which has intrigued extensive attention in both academic and engineering *** has been considered as one of the powerful tools in promoting the fields of imaging processing and object ***,the existing optical system architecture cannot be reconstructed to the realization of multi-functional artificial intelligence systems *** push the development of this issue,we propose the pluggable diffractive neural networks(P-DNN),a general paradigm resorting to the cascaded metasurfaces,which can be applied to recognize various tasks by switching internal *** the proof-of-principle,the recognition functions of six types of handwritten digits and six types of fashions are numerical simulated and experimental demonstrated at near-infrared ***,the proposed paradigm not only improves the flexibility of the optical neural networks but paves the new route for achieving high-speed,low-power and versatile artificial intelligence systems.

关键词： optical neural networks diffractive deep neural networks cascaded metasurfaces

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Subsoil tillage enhances wheat productivity,soil organic carbon and available nutrient status in dryland fields

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Journal of Integrative Agriculture 2024年第1期23卷 251-266页

作者： Qiuyan Yan Linjia Wu fei dong Shuangdui Yan Feng Li Yaqin Jia Jiancheng Zhang Ruifu Zhang Xiao Huang Institute of Wheat Research Shanxi Agricultural UniversityLinfen 041000China State Key Laboratory of Sustainable Dryland Agriculture(in preparation) Shanxi Agricultural UniversityTaiyuan 030031China College of Resources and Environment Shanxi Agricultural UniversityTaigu 030801China Jiangsu Key Lab and Engineering Center for Solid Organic Waste Utilization National Engineering Research Center for Organicbased FertilizersNanjing Agricultural UniversityNanjing 210095China

Tillage practices during the fallow period benefit water storage and yield in dryland wheat ***,there is currently no clarity on the responses of soil organic carbon(SOC),total nitrogen(TN),and available nutrients to tillage practices within the growing *** study evaluated the effects of three tillage practices(NT,no tillage;SS,subsoil tillage;DT,deep tillage)over five years on soil physicochemical *** samples at harvest stage from the fifth year were analyzed to determine the soil aggregate and aggregate-associated C and N *** results indicated that SS and DT improved grain yield,straw biomass and straw carbon return of wheat compared with *** contrast to DT and NT,SS favored SOC and TN concentrations and stocks by increasing the soil organic carbon sequestration rate(SOCSR)and soil nitrogen sequestration rate(TNSR)in the 0-40 cm *** SOC levels under SS and NT were associated with greater aggregate-associated C fractions,while TN was positively associated with soluble organic nitrogen(SON).Compared with DT,the NT and SS treatments improved soil available nutrients in the 0-20 cm *** findings suggest that SS is an excellent practice for increasing soil carbon,nitrogen and nutrient availability in dryland wheat fields in North China.

关键词： tillage dryland wheat fields soil aggregate size soil nutrients soil carbon and nitrogen fractions

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Constructing oxygen deficiency-rich V_(2)O_(3)@PEDOT cathode for high-performance aqueous zinc-ion batteries

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Rare Metals 2024年第2期43卷 635-646页

作者： dong-fei Sun Zi-Juan Wang Tian Tian Xin Yu Dan-Dan Yu Xiao-Zhong Zhou Guo-Fu Ma Zi-Qiang Lei Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education Key Laboratory of Eco-environmental Polymer Materials of Gansu ProvinceSchool of College of Chemistry and Chemical EngineeringNorthwest Normal UniversityLanzhou730070China

Aqueous zinc-ion batteries(AZIBs)have attracted widespread attention due to the advantages of high safety and environmental *** V_(2)O_(3) is a promising cathode,the strong electrostatic interaction between Zn^(2+) and V_(2)O_(3) crystal,and the sluggish reaction kinetics still limit their application in ***,the oxygen defects rich V_(2)O_(3) with conducive poly(3,4-ethylenedioxythiophene)(PEDOT)shell(V_(2)O_(3)-Od@PEDOT)was fabricated for AZIBs by combining the sulfur-assisted thermal reduction and in-situ polymerization *** introduced oxygen vacancies of V_(2)O_(3)–Od@PEDOT weaken the electrostatic interaction between Zn^(2+) and the host material,improving the interfacial electron transport,while the PEDOT coating enhances the structural stability and conductivity of V_(2)O_(3),thus accelerating the reaction *** on the advantages,V_(2)O_(3)–Od@PEDOT electrode delivers a reversible capacity of 495 mAh·g^(−1) at 0.1 A·g^(−1),good rate capability(189 mAh·g^(−1)at 8.0 A·g^(−1)),and an impressive cycling stability with 90.1%capacity retention over 1000 cycles at 8.0 A·g^(−1).The strategy may provide a path for exploiting the other materials for high performance AZIBs.

关键词： Oxygen defects V_(2)O_(3) PEDOT Electrochemical self-optimization Aqueous zinc-ion batteries

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Insight study of rare earth elements in PM_(2.5)during five years in a Chinese inland city:Composition

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Journal of Environmental Sciences 2024年第4期138卷 439-449页

作者： Yi-Wen Shen Chang-Xian Zhao Hao Zhao Shuo-fei dong Qi Guo Jiao-Jiao Xie Mei-Ling Lv Chun-Gang Yuan Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control Department ofEnvironmental Science&EngineeringNorth China Electric Power UniversityBaoding 071000China MOE Key Laboratory of Resources and Environmental Systems Optimization College of Environmental Science and EngineeringNorth China Electric Power UniversityBeijing 102206China Agilent Technologies Co.Ltd.(China) Beijing 100102China

The booming development of rare earth industry and the extensive utilization of its products accompanied by urban development have led to the accelerated accumulation of rare earth elements(REEs)as emerging pollutants in atmospheric *** this study,the variation of REEs in PM_(2.5)with urban(a non-mining city)transformation was investigated through five consecutive years of sample *** compositional variability and provenance contribution of REEs in PM_(2.5)were characterized,and the REEs exposure risks of children and adults via inhalation,ingestion and dermal absorption were also *** results showed an increase in the total REEs concentration from 46.46±35.16 mg/kg(2017)to 81.22±38.98 mg/kg(2021)over the five-year period,with Ce and La making the largest *** actual increment of industrial and traffic emission source among the three pollution sources was 1.34 ng/m^(3).Coal combustion source displayed a downward *** was the main exposure pathway for REEs in PM_(2.5)for both children and *** contributed the most to the total intake of REEs in PM_(2.5)among the population,followed by La and *** exposure risks of REEs in PM_(2.5)in the region were relatively low,but the trend of change was of great *** was strongly recommended to strengthen the concern about traffic-related non-exhaust emissions of particulate matter.

关键词： Rare earth elements Exposure risks Pollution sources Traffic-related non-exhaust emissions

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The effects of inner electrode shape on the performance of dielectric barrier discharge reactor for oxidative removal of NO and SO_(2)

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Plasma Science and Technology 2024年第7期26卷 177-186页

作者：蔡云凯黄兵锋董飞祝能 School of Automotive Engineering Hubei University of Automotive TechnologyShiyan 442002People’s Republic of China Hubei Key Laboratory of Automotive Power Train and Electronic Control Shiyan 442002People’s Republic of China School of Energy and Power Engineering Wuhan University of TechnologyWuhan 430070People’s Republic of China School of Automotive and Transportation Engineering Wuhan University of Science and TechnologyWuhan 430081People’s Republic of China

Seagoing vessels are responsible for more than 90%of global freight traffic,but meanwhile,emission pollutants(NO_(x)and SO_(x))of seagoing vessels also cause serious air *** plasma(NTP)combined with wet scrubbing technology is considered to be a promising *** order to improve the oxidation efficiency and energy efficiency of the NTP reactor,the screw and rod inner electrodes of dielectric barrier discharge(DBD)reactor were *** analyze the mechanism,the optical emission spectra(OES)of NTP were measured and numerical calculation was *** experiment results show that the NO oxidation removal efficiency of screw electrode is lower than that of rod ***,the SO_(2)removal efficiency of screw electrode is *** to the OES experiment and numerical calculation,the electric field intensity of the screw electrode surface is much higher than that of the rod electrode surface,and it is easier to generate N radicals to form *** the same energy density condition,the OH radical generation efficiency of the screw electrode reactor is similar to that of the rod electrode,but the gas temperature in the discharge gap is ***,the SO2 oxidation efficiency of the thread electrode is *** study provides guidance for the optimization of oxidation efficiency and energy consumption of DBD reactor.

关键词： electrode dielectric oxidative

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Tumor recurrence and survival prognosis in patients with advanced gastric cancer after radical resection with radiotherapy and chemotherapy

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World Journal of Gastrointestinal Surgery 2024年第6期16卷 1660-1669页

作者： Shuang-Fa Nie Chen-Yang Wang Lei Li Cheng Yang Zi-Ming Zhu Jian-dong fei Department of General Surgery The First Affiliated Hospital of Hebei North UniversityZhangjiakou 75000Hebei ProvinceChina Department of Gastrointestinal Surgery Zhongshan Hospital of Fudan UniversityShanghai 200032China

BACKGROUND Advanced gastric cancer is a common malignancy that is often diagnosed at an advanced stage and is still at risk of recurrence after radical surgical ***,as one of the important treatment methods for gastric cancer,is of great significance for improving the survival rate of ***,the tumor recurrence and survival prognosis of gastric cancer patients after radio-therapy and chemotherapy are still *** To analyze the tumor recurrence after radical radiotherapy and chemotherapy for advanced gastric cancer and provide more in-depth guidance for *** A retrospective analysis was performed on 171 patients with gastric cancer who received postoperative adjuvant radiotherapy and chemotherapy in our hospital from 2021 to *** Kaplan-Meier method was used to calculate the recurrence rate and survival rate;the log-rank method was used to analyze the single-factor prognosis;and the Cox model was used to analyze the prognosis associated with multiple *** The median follow-up time of the whole group was 63 months,and the follow-up rate was 93.6%.Stage Ⅱ and Ⅲ patients accounted for 31.0%and 66.7%,*** incidences of Grade 3 and above acute gastrointestinal reactions and hematological adverse reactions were 8.8%and 9.9%,respectively.A total of 166 patients completed the entire chemoradiotherapy regimen,during which no adverse reaction-related deaths *** terms of the recurrence pattern,17 patients had local recurrence,29 patients had distant metastasis,and 12 patients had peritoneal implantation *** 1-year,3-year,and 5-year overall survival(OS)rates were 83.7%,66.3%,and 60.0%,*** 1-year,3-year,and 5-year disease-free survival rates were 75.5%,62.7%,and 56.5%,*** analysis revealed that T stage,peripheral nerve invasion,and the lymph node metastasis rate(LNR)were independent prognostic factors for *** Postoperative intensity-

关键词： Tumor recurrence Survival prognosis Advanced gastric cancer Radical resection Retrospective study

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Developing a diagnostic model for predicting prostate cancer: a retrospective study based on Chinese multicenter clinical data

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Asian Journal of Andrology 2024年第1期26卷 34-40页

作者： Chang-Ming Wang Lei Yuan Xue-Han Liu Shu-Qiu Chen Hai-Feng Wang Qi-fei dong Bin Zhang Ming-Shuo Huang Zhi-Yong Zhang Jun Xiao Tao Tao Department of Urology The First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230001China Department of Radiology The First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230001China Core Facility Center for Medical Sciences The First Affiliated Hospital of USTcDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230001China Department of Urology Affiliated Zhongda Hospital of Southeast UniversityNanjing 210009China Department of Urology Shanghai East HospitalTongji University School of MedicineShanghai 200120China Department of Urology Shanghai Changhai HospitalSecond Military Medical UniversityShanghai 200000China Department of Urology Affiliated Anhui Provincial Hospital of Anhui Medical UniversityHefei 230001China

The overdiagnosis of prostate cancer(PCa)caused by nonspecific elevation serum prostate-specific antigen(PSA)and the overtreatment of indolent PCa have become a global problem that needs to be solved *** aimed to construct a prediction model and provide a risk stratification system to reduce unnecessary *** this retrospective study,clinical data of 1807 patients from three Chinese hospitals were *** final model was built using stepwise logistic regression *** apparent performance of the model was assessed by receiver operating characteristic curves,calibration plots,and decision curve ***,a risk stratification system of clinically significant prostate cancer(csPCa)was created,and diagnosis-free survival analyses were *** multivariable screening and evaluation of the diagnostic performances,a final diagnostic model comprised of the PSA density and Prostate Imaging-Reporting and Data System(PI-RADS)score was *** validation in the development cohort and two external cohorts showed excellent discrimination and ***,we created a risk stratification system using risk thresholds of 0.05 and 0.60 as the cut-off *** follow-up results indicated that the diagnosis-free survival rate for csPCa at 12 months and 24 months postoperatively was 99.7%and 99.4%,respectively,for patients with a risk threshold below O.05 after the initial negative prostate biopsy,which was significantly better than patients with higher *** diagnostic model and risk stratification system can achieve a personalized risk calculation of *** provides a standardized tool for Chinese patients and physicians when considering thenecessity of prostatebiopsy.

关键词： nomogram prostate biopsy prostate cancer Prostate Imaging-Reporting and Data System prostate-specific antigen density

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混合热工和水力特性的风机盘管系统建模

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控制理论与应用 2024年第1期41卷 59-71页

作者：赵安军董菲菲于军琪张宇张萌芝西安建筑科技大学建筑设备科学与工程学院陕西西安710055 西安建筑科技大学信息与控制工程学院陕西西安710055

针对风机盘管系统建模研究中大多数未考虑水力学特性对其的影响,本文提出混合热工和水力特性的风机盘管系统建模方法,以满足实际工程中对于风机盘管系统控制的数学模型需要.在水力学模型中考虑风机盘管电动水阀,基于基尔霍夫定律建立水... 详细信息

针对风机盘管系统建模研究中大多数未考虑水力学特性对其的影响,本文提出混合热工和水力特性的风机盘管系统建模方法,以满足实际工程中对于风机盘管系统控制的数学模型需要.在水力学模型中考虑风机盘管电动水阀,基于基尔霍夫定律建立水力平衡方程,通过遗传–粒子群相结合的优化算法(GA-PSO)求解各个盘管的水流量及对应的阀门开度;以水流量为输入,考虑风机盘管风量,采用非线性最小二乘法辨识求解其总传热系数,建立基于牛顿冷却定律的风机盘管热力学模型.实验结果表明:混合热工和水力特性的建模方法能够更好的反应风机盘管的物理过程;GA-PSO算法具有很好的稳定性和收敛性,能够更准确的求解水流量及对应的阀门开度,与实际运行数据的相对误差不超过1%;热力学模型在各种实际工况下的模型误差都低于4%,能够精确反映风机盘管的传热过程.

关键词：风机盘管水力学模型阀门遗传–粒子群算法最小二乘法参数辨识

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高压拉曼光谱研究均苯四甲酸二酐

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光谱学与光谱分析 2024年第9期44卷 2434-2438页

作者：丛广宇李东飞刘嘉睿长春光华学院基础教研部吉林长春130033 长春师范大学物理学院吉林长春130032 吉林师范大学物理学院吉林四平136000

测量了常温常压下的均苯四甲酸二酐的拉曼光谱,并对所测量的各个拉曼谱线进行归属认证。获得了从常压到24GPa压强条件下的原位拉曼光谱,通过频率-压强关系曲线可以得出该材料在2Gpa存在晶体结构相变,定义了均苯四甲酸二酐在低于2GPa压... 详细信息

测量了常温常压下的均苯四甲酸二酐的拉曼光谱,并对所测量的各个拉曼谱线进行归属认证。获得了从常压到24GPa压强条件下的原位拉曼光谱,通过频率-压强关系曲线可以得出该材料在2Gpa存在晶体结构相变,定义了均苯四甲酸二酐在低于2GPa压强条件的晶体结构为相Ⅰ,高于2GPa压强条件的晶体结构相为相Ⅱ。在相变前后,绝大多数的拉曼谱线频率-压强曲线斜率变小,说明与相Ⅰ相比,各官能团对压强的敏感程度下降,相Ⅱ的分子晶体具有更紧密的堆积结构。拉曼光谱强度能够给出丰富的材料结构信息,通过对C—O伸缩振动的倍频(常压位于1837cm^(-1))和C=O伸缩振动基频(常压位于1865cm^(-1))的相对拉曼光谱强度随压强的变化规律进行分析,发现两拉曼谱线强度比在2GPa附近存在突变,为均苯四甲酸二酐在2GPa附近发生结构相变提供了实验依据。

关键词：拉曼光谱高压相变均苯四甲酸二酐

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HPLC-MS/MS法测定水产养殖用水中6种常用抗生素残留

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化学研究与应用 2024年第5期36卷 1148-1153页

作者：董飞于悦丁可徐勇山东省临沂生态环境监测中心山东临沂276001 临沂市生态环境局费县分局山东临沂273400

建立全自动SPE富集、净化作水产养殖用水中的恩诺沙星、环丙沙星、氨苄西林、双氯西林、头孢氨苄和头孢拉定6种抗生素UPLC-MSMS法定性、定量检测的分析方法。随机在水产养殖池塘中采集水产养殖用水,取约5L,去除杂物后调节pH至中性,取调... 详细信息

建立全自动SPE富集、净化作水产养殖用水中的恩诺沙星、环丙沙星、氨苄西林、双氯西林、头孢氨苄和头孢拉定6种抗生素UPLC-MSMS法定性、定量检测的分析方法。随机在水产养殖池塘中采集水产养殖用水,取约5L,去除杂物后调节pH至中性,取调节pH后水样500mL,以流速25mL·min^(-1)的流速,过固相萃取柱富集、净化,净化液氮吹至近干,残渣加1.0mL丙酮溶解,上UPLC-MS/MS定量检测。恩诺沙星、环丙沙星、氨苄西林、双氯西林、头孢氨苄和头孢拉定在浓度0.001~2.0μg·mL^(-1)范围内,线性关系良好;检出限分别为0.021μg·L^(-1)-0.015μg·L、0.036μg·L^(-1)、0.013μg·L^(-1)、0.020μg·L^(-1)和0.009μg·L^(-1);加样回收率范围在86.1~102.1%;重复性RSD分别为1.9%、2.1%、2.4%、2.3%、2.9%、2.7%。实验结果证明,此方法具有操作简单、准确等特点,可以用于水产养殖用水中抗生素的监测。

关键词：全自动SPE 水产养殖用水恩诺沙星抗生素 UPLC-MS/MS

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