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Binary neutron stars gravitational wave detection based on wavelet packet analysis and convolutional neural networks

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Frontiers of physics 2020年第2期15卷 111-117页

作者： Bai-Jiong Lin Xiang-ru Li Wo-Liang yu South China Normal University Guangzhou 510631China

This work investigates the detection of binary neutron stars gravitational wave based on convolutional neural network(CNN).To promote the detection performance and efficiency,we proposed a scheme based on wavelet packet(WP)decomposition and *** WP decomposition is a time-frequency method and can enhance the discriminant features between gravitational wave signal and noise before *** CNN conducts the gravitational wave detection by learning a function mapping relation from the data under being processed to the space of detection *** function-mapping-relation style detection scheme can detection efficiency *** this work,instrument effects are con-sidered,and the noise are computed from a power spectral density(PSD)equivalent to the Advanced LIGO design *** quantitative evaluations and comparisons with the state-of-art method matched filtering show the excellent performances for BNS gravitational wave *** efficiency,the current experiments show that this WP-CNN-based scheme is more than 960 times faster than the matched filtering.

关键词： gravitational waves algorithms astrostatistics techniques

Desulfurization of rejected electrolytic manganese metal by electroslag remelting furnace with a water-cooled electrode

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Journal of Iron and Steel Research International 2023年第7期30卷 1411-1425页

作者： ru Lu Ran-ran yu Guang-qiang Li yu Liu Qiang Wang Hai-chuan Wang School of Metallurgical Engineering Anhui University of TechnologyMa’anshan 243002AnhuiChina The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081HubeiChina

Remelting rejected electrolytic manganese metal (EMM) scrap was investigated by electroslag remelting (ESR) process through industrial experiment. The results indicated that the ANF-6 slag (70 wt.% CaF_(2) + 30 wt.% Al_(2)O_(3)) and deoxidizer could promote the desulfurization of ESR manganese in an air atmosphere. Under an air atmosphere, the sulfur in the ingot decreased to 0.0534 wt.% with a desulfurization ratio of ESR manganese of 53.2% by using ANF-6 slag and water-cooled copper electrode electroslag remelting rejected EMM scrap, suggesting its efficient removal. The electroslag ingots exhibited uneven chemical composition in an air atmosphere and cooling condition of the ESR process. The metal manganese could be oxidized by electroslag remelting of rejected EMM scrap in an air atmosphere with MnO content in the final slag of 21.9 wt.%. Besides, the activity of MnO in slag increased with increasing remelting temperature, resulting in a reduction in the slag–manganese sulfur partition ratio and desulfurization ratio. Moreover, with the accumulation of sulfur in slag and the oxidation of metallic manganese liquid, the slag showed a lower cleanliness and more oxidation, leading to an increase in sulfur and oxygen content in the electroslag ingot with the increase in ingot height.

关键词： Rejected electrolytic manganese metal scrap Desulfurization Electroslag remelting Thermodynamics

Evaluating efficacy of screening for upper gastrointestinal cancer in China:a study protocol for a randomized controlled trial

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Chinese Journal of Cancer Research 2017年第4期29卷 294-302页

作者： Wanqing Chen Hongmei Zeng ru Chenl ruyi Xia Zhixun Yang Changfa Xia Rongshou zheng Wenqiang Wei Guihua Zhuang Xueqin yu Jie He Nadonal Cancer Center/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100021 China School of Public Health Xi＇an Jiaotong University Health Science Center Xi＇an 710061 China Cancer Research Division Cancer Council NSW Sydney 1340 Australia Sydney School of Public Health University of Sydney Sydney 1340 Australia

Objective： To evaluate the efficacy and feasibility of screening procedure for upper gastrointestinal cancer in both high-risk and non-high-risk areas in China. Setting： Seven cities/counties, representing three economical-geographical regions （Eastern, Central and Western） in China, were selected as screening centers： three in high-risk areas and four in non-high-risk areas. Participants： Villages/communities in these seven centers regarded as clusters were randomly assigned to either intervention group （screening by endoscopic examination） or control group （with normal community care） in a 1：1 ratio stratified by each center. Eligible participants are local residents aged 40-69 years in the selected villages/communities with no history of cancer or endoscopic examination in the latest 3 years who are mentally and physically competent. Those who are not willing to take endoscopic examination or are unwilling to sign the consent form are excluded from the study. Totally 140,000 participants will be enrolled. Interventions： In high-risk areas of upper gastrointestinal cancer, all subjects in screening group will be screened by endoscopy. In non-high-risk areas, 30% of the subjects in screening group, identified through a survey, will be screened by endoscopy. Primary and secondary outcome measures： The primary outcome is the mortality caused by upper gastrointestinal cancer. The secondary outcomes include detection rate, incidence rate, survival rate, and clinical stage distribution. Additional data on quality of life and cost-effectiveness will also be collected to answer important questions regarding screening effects. Conclusions： Screening strategy evaluated in those areas with positive findings may be promoted nationally and applied to the majority of Chinese people. On the other hand, negative findings will provide scientific evidence for abandoning a test and shifting resources elsewhere. Trial registration： The study has been registered with the Protocol Regi

关键词： Randomized controlled trial screening upper gastrointestinal cancer evaluation China

High-risk factors for delirium in severely ill patients and the application of emotional nursing combined with pain nursing

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World Journal of Psychiatry 2024年第7期14卷 1027-1033页

作者： Hong-ru Li yu Guo Emergency Intensive Care Unit The Fourth Affiliated Hospital of Soochow University(Suzhou Dushu Lake Hospital)Suzhou 215000Jiangsu ProvinceChina

BACKGROUND Delirium is a neuropsychiatric syndrome characterized by acute disturbances of consciousness with rapid onset,rapid progression,obvious fluctuations,and preventable,reversible,and other *** with delirium in the intensive care unit(ICU)are often missed or misdiagnosed and do not receive adequate *** To analyze the risk factors for delirium in ICU patients and explore the applica-tion of emotional nursing with pain nursing in the management of *** General data of 301 critically ill patients were retrospectively collected,including histories(cardiovascular and cerebrovascular diseases,hypertension,smoking,alcoholism,and diabetes),age,sex,diagnosis,whether surgery was performed,and patient origin(emergency/clinic).Additionally,the duration of sedation,Richmond Agitation Sedation Scale score,combined emotional and pain care,ven-tilator use duration,vasoactive drug use,drainage tube retention,ICU stay du-ration,C-reactive protein,procalcitonin,white blood cell count,body tempe-rature,Acute Physiology and Chronic Health Evaluation II(APACHE II)score,and Sequential Organ Failure Assessment score were recorded within 24 h after ICU *** were assessed for delirium according to confusion assessment method for the ICU,and univariate and multivariate logistic regre-ssion analyses were performed to identify the risk factors for delirium in the *** Univariate logistic regression analysis was performed on the 24 potential risk factors associated with delirium in ICU *** results showed that 16 risk factors were closely related to delirium,including combined emotional and pain care,history of diabetes,and patient *** logistic regression analysis revealed that no combined emotional and pain care,history of diabetes,emergency source,surgery,long stay in the ICU,smoking history,and high APACHE II score were independent risk factors for de-lirium in ICU *** Patients

关键词： Critical illness Delirium Risk factor Intensive care unit Emotional nursing Pain nursing

Microstructural evolution and mechanical properties of 55NiCrMoV7 hot-work die steel during quenching and tempering treatments

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Advances in Manufacturing 2021年第4期9卷 520-537页

作者： Xing-Sheng yu Chuan Wu ru-Xing Shi Ya-Sha yuan Luoyang CITIC HIC Casting&Forging Co. LtdLuoyang 471039HenanPeople’s Republic of China National-Local Joint Engineering Laboratory of Intelligent Manufacturing Oriented Automobile Die&Mould Tianjin University of Technology and EducationTianjin 300222People’s Republic of China CITIC Heavy Industries Co. LtdLuoyang 471039HenanPeople’s Republic of China

55NiCrMoV7 hot-work die steel is mainly used to manufacture heavy forgings in the fields of aerospace and *** study aims to clarify the effects of heat treatment on the microstructural evolution and mechanical properties of the steel,in order to find out an optimal heat treatment scheme to obtain an excellent balance of strength,ductility and *** steel was quenched at temperature from 790℃ to 910℃ followed by tempering treatments of 100–650℃ for 5 *** mechanical property tests were carried out by tensile,impact toughness and *** microscope(OM),scanning electron microscope(SEM)and transmission electron microscope(TEM)were used to observe the austenite grains,lath martensite,carbides and fracture *** results show that the quenching temperature mainly influences the austenite grain size and the volume fraction of undissolved carbides(UCs),while the tempering temperature mainly influences the size and morphology of the martensite with a body centered cubic(BCC)and the carbides with a face centered cubic(FCC).The mechanical properties of the steel,including yield and tensile strength,ductility,impact toughness and hardness,get an excellent balance at a quenching range of 850–870*** the tempering temperature increases,the yield and tensile strength and hardness decrease,while the ductility and impact toughness *** variation trends can be further verified by fracture SEM observation and *** with a macro-micro coupled finite element(MMFE)modeling technique,the cooling rate,microstructural evolution and yield strength of the steel were predicted and compared with the tested data.

关键词： Hot-work die steel Microstructural evolution Mechanical properties Heat treatment Macro-micro coupled modeling and simulation

Mechanism and Microstructure of Electroless Ni-Fe-P Plating on CNTs

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Journal of China University of Mining and Technology 2007年第3期17卷 424-427页

作者： XUE ru-jun WU yu-cheng School of Materials Science and Engineering Hefei University of Technology Hefei Anhui 230009 China China

Electroless Ni-Fe-P alloy plating on the surface of CNTs was carded out with a bath using citrate salt and lactic acid as complex agents. We proposed a chemical reaction mechanism. The morphology, structure and chemical composition of the Ni-Fe-P/CNTs were studied with the aid of a scanning electronic microscope （SEM）, X-ray diffraction （XRD） and an energy-dispersive X-ray spectral analysis （EDS）. The results show that through a correct pre-treatment and electroless plating, Ni-Fe-P/CNTs composite particles can be obtained. The optimum electroless plating parameters of 35-42℃ and pH of 8.5-9.7 were achieved. The as-plated Ni-Fe-P alloy is amorphous. After a heat treatment at 500℃ for 90 min in H2, the coating is transformed into crystalloid Ni3E Fe2NiP and （Fe,Ni）3R The Ni-Fe-P alloy coating on the surface of CNTs is smooth and unique. The amount of Ni on the surface （mass fraction） of the Ni-Fe-P/CNTs composite particles is 29.13%, that of Fe 3.19% and that of P 2.28%.

关键词： carbon nanotubes Ni-Fe-P alloy eletroless plating mechanism structure

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高效液相色谱法测定牙膏中游离甲醛的含量

香料香精化妆品 2025年第1期 23-25,114页

作者：陈丹丹茹歌俞灵惠太成彭兴盛郑荣上海市食品药品检验研究院上海201203

建立高效液相色谱法测定牙膏中游离甲醛含量的方法。采用Agilent SB-C18色谱柱(250mm×4.6mm×5μm)分离,以体积分数0.2%磷酸溶液为流动相等度洗脱,二极管阵列检测器和荧光检测器同时测定。结果表明,游离甲醛在0.05~5μg/mL线性关系良好... 详细信息

建立高效液相色谱法测定牙膏中游离甲醛含量的方法。采用Agilent SB-C18色谱柱(250mm×4.6mm×5μm)分离,以体积分数0.2%磷酸溶液为流动相等度洗脱,二极管阵列检测器和荧光检测器同时测定。结果表明,游离甲醛在0.05~5μg/mL线性关系良好,方法检出限为0.00020%,回收率为91.4%~107.5%,相对标准偏差(RSD)均小于5%(n=6)。该方法操作简便、灵敏度高,测定结果准确可靠,适用于牙膏中游离甲醛的测定。

关键词：高效液相色谱牙膏甲醛柱后衍生

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基于金属有机框架的光催化抗菌材料研究进展

现代化工 2025年第1期45卷 51-55页

作者：陈翔宇韦文龙刘子儒 Pier-Luc Tremblay 张甜武汉理工大学化学化工与生命科学学院湖北武汉430070 武汉理工大学三亚科教创新园海南三亚572024 武汉理工大学材料科学与工程学院湖北武汉430070

对近年来基于金属有机框架的光催化抗菌材料进行了梳理,包括掺杂金属纳米粒子的MOFs材料、异质结MOFs材料、卟啉基MOFs材料以及其他MOFs材料,旨在为相关领域的研究与实践提供参考。

关键词：金属有机框架光催化抗菌优化机理

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数字化转型下服装品牌营销渠道的策略分析

纺织科学与工程学报 2025年第1期42卷 94-98,104页

作者：宛如玉申鸿郭荣辉四川大学轻工科学与工程学院四川成都610065

随着数字化转型的深入,服装品牌面临着营销渠道变革的挑战。通过文献综述和案例分析,探讨了服装品牌在数字化转型下的营销渠道策略,强调了整合线上线下渠道、利用社交媒体平台、应用技术创新以及可持续发展和社会责任的重要性。进一步... 详细信息

随着数字化转型的深入,服装品牌面临着营销渠道变革的挑战。通过文献综述和案例分析,探讨了服装品牌在数字化转型下的营销渠道策略,强调了整合线上线下渠道、利用社交媒体平台、应用技术创新以及可持续发展和社会责任的重要性。进一步探讨了全渠道营销的概念,通过线上线下融合、社交媒体互动、技术创新(如AR、VR、AI)和绿色营销来提升品牌影响力与市场竞争力。最后讨论了数字化转型给服装品牌带来的挑战与机遇,并预测了未来营销渠道策略的发展趋势,为服装品牌在数字化转型中的营销渠道策略提供了理论支持。

关键词：数字化转型服装品牌营销渠道策略分析