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川北医学院学报 2024年第4期39卷 538-543页

作者：邓雪梅李婷翟昭华医学影像四川省重点实验室·川北医学院附属医院放射科四川南充637000 内江市第二人民医院放射科四川内江641000

目的:采用度中心度(DC)和格兰杰因果分析(GCA)方法研究急性一氧化碳中毒(ACMP)患者脑功能网络有效连接变化,探索其与认知功能障碍之间的相关性。方法:对54例ACMP患者(ACMP组)及37名健康对照组(HC组)行静息态功能磁共振成像扫描,在两组... 详细信息

目的:采用度中心度(DC)和格兰杰因果分析(GCA)方法研究急性一氧化碳中毒(ACMP)患者脑功能网络有效连接变化,探索其与认知功能障碍之间的相关性。方法:对54例ACMP患者(ACMP组)及37名健康对照组(HC组)行静息态功能磁共振成像扫描,在两组间DC值具有显著差异的脑区中,选取左侧颞下回作为种子点,进行全脑体素GCA分析;提取组间具有显著差异的脑区DC值和GCA有效连接值,分析它们与MMSE、MoCA评分之间的相关性。结果:与HC组比较,ACMP组左侧颞下回、左侧海马、左侧海马旁回、左侧额上回、左侧额下回的DC值增高,右侧辅助运动区、右侧小脑Crus1区及Crus2区的DC值减低(P<0.05,FWE校正);左侧颞下回与双侧楔前叶、右侧颞下回及左侧中央旁小叶的双向有效连接效应均存在异常,另外左侧颞下回至右侧顶上回和双侧小脑Crus1区有效连接增强,至双侧扣带回、左侧额上回、左侧额中回有效连接减弱,而右侧中央旁小叶至左侧颞下回的有效连接减弱(P<0.05,GRF校正);相关分析显示,网络有效连接的变化与MoCA、MMSE评分有相关性(P<0.05)。结论:ACMP患者在脑网络中表现出异常程度的度中心性,主要在默认网络、中央执行网络、感觉运动网络间出现有效功能连接异常,提示患者在早期即存在全脑多功能网络损伤。

关键词：急性一氧化碳中毒度中心度格兰杰因果分析有效连接

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A strategy to synthesize phosphorus-containing nickel phyllosilicate whiskers to enhance the flame retardancy of epoxy composites with excellent mechanical and dry-friction properties

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Frontiers of Chemical Science and Engineering 2024年第3期18卷 39-50页

作者： Shibin Nie Zongquan zhao Yuxuan Xu Wei He Wenli zhai Jinian Yang School of Public Security and Emergency Management Anhui University of Science and TechnologyHefei231131China School of Safety Science and Engineering Anhui University of Science and TechnologyHuainan232001China School of Materials Science and Engineering Anhui University of Science and TechnologyHuainan232001China Institute of Energy Hefei Comprehensive National Science CenterHefei230000China

To enhance the fire safety and wear resistance of epoxy,phosphorus-containing nickel phyllosilicate whiskers(FP-NiPS)were synthesized using a facile hydrothermal technology,with 9,10-dihydro-9-oxa-10-phosphaphenanthrene as the organic *** impacts of FP-NiPS on the thermal stability,flame retardancy,and mechanical and tribological properties of EP composites were *** findings demonstrated that 5 wt%FP-NiPS elevated the limiting oxygen index of the EP composite from 23.8%to 28.4%,achieving a V-0 rating during vertical burning ***-NiPS could enhance the thermal stability of epoxy resin(EP)and facilitate the development of a dense and continuous carbon layer,thereby significantly improving the fire safety of the EP *** FP-NiPS led to an 8.2%increase in the tensile strength and a 38.8%increase in the elastic modulus of the EP composite,showing outstanding mechanical ***,FP-NiPS showed remarkable potential in enhancing the wear resistance of *** wear rate of 1 wt%FP-NiPS is 2.34×10^(−5) mm^(3)·N^(−1)·m^(−1),a decrease of 66.7%compared to *** work provides a novel promising modification method to enhance the fire safety,mechanical and wear resistance properties of EP.

关键词： nickel phyllosilicate epoxy resin flame retardant wear resistance mechanical property

TextFormer: A Query-based End-to-end Text Spotter with Mixed Supervision

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Machine Intelligence Research 2024年第4期21卷 704-717页

作者： Yukun zhai Xiaoqiang Zhang Xiameng Qin Sanyuan zhao Xingping Dong Jianbing Shen School of Computer Science Beijing Institute of TechnologyBeijing 100081China Department of Computer Vision Technology Baidu Inc.Beijing 100193China

End-to-end text spotting is a vital computer vision task that aims to integrate scene text detection and recognition into a unified *** methods heavily rely on region-of-interest(Rol)operations to extract local features and complex post-processing steps to produce final *** address these limitations,we propose TextFormer,a query-based end-to-end text spotter with a transformer ***,using query embedding per text instance,TextFormer builds upon an image encoder and a text decoder to learn a joint semantic understanding for multitask *** allows for mutual training and optimization of classification,segmentation and recognition branches,resulting in deeper feature sharing without sacrificing flexibility or ***,we design an adaptive global aggregation(AGG)module to transfer global features into sequential features for reading arbitrarilyshaped texts,which overcomes the suboptimization problem of Rol ***,potential corpus information is utilized from weak annotations to full labels through mixed supervision,further improving text detection and end-to-end text spotting *** experiments on various bilingual(i.e.,English and Chinese)benchmarks demonstrate the superiority of our *** on the TDA-ReCTS dataset,TextFormer surpasses the state-of-the-art method in terms of 1-NED by 13.2%.

关键词： End-to-end text spotting arbitrarily-shaped texts transformer mixed supervision multitask modeling.

Pd/N-doped carbon dots@dendritic mesoporous silica nanospheres:A highly efficient catalyst for the hydrogenation of 4-nitrophenol

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Nano Research 2024年第9期17卷 7967-7974页

作者： Weiruo Liu Yanbin Zhu Jiwei Wang Haisong Feng Yunpu zhai Wei Li Dongyuan zhao College of Chemistry Zhengzhou University100 Kexue AvenueZhengzhou 450001China Department of Chemistry Laboratory of Advanced MaterialsShanghai Key Laboratory of Molecular Catalysis and Innovative Materialsand State Key Laboratory of Molecular Engineering of PolymersFudan UniversityShanghai 200433China State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China

Highly dispersed Pd/N-doped carbon dots(Pd/NCDs)were successfully immobilized in the mesoporous channels of amino-functionalized dendritic mesoporous silica nanospheres(NMS).The synthesized Pd/NCDs@NMS catalyst exhibits outstanding performance in the catalytic reduction of 4-nitrophenol(4-NP),achieving a turnover frequency of 1461.8 mol·molPd^(-1)·h^(-1),with the conversion rate remaining above 80%after 11 *** and density functional theory calculations reveal that the NCDs significantly affect the electronic structure of Pd nanoparticles,leading to changes in the energy barriers for the adsorption of 4-NP at the Pd sites and the conversion of 4-NP reaction intermediates,which is a key factor contributing to the catalytic *** study offers a new strategy for synthesizing carbon-dot-modified metal-based catalysts.

关键词： palladium nanoparticles nitrogen-doped carbon dots dendritic mesoporous silica catalytic hydrogenation 4-nitrophenol reduction

Clinical application of free/total PSA ratio in the diagnosis of prostate cancer in men over 50 years of age with total PSA levels of 2.0-25.0 ng ml^(−1) in Western China

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Asian Journal of Andrology 2022年第2期24卷 195-200页

作者： Xue-Dan Gao Qiang Miao Jun-Long Zhang Jian-zhao zhai Xue-Mei Gui Yi-Han Cai Qian Niu Bei Cai Department of Laboratory Medicine/Research Center of Clinical Laboratory Medicine West China Hospital of Sichuan UniversityChengdu 610041China Department of Laboratory Medicine Nan’an Chinese Medicine HospitalChongqing 400060China

The goal of this study was to investigate the clinical application of free/total prostate-specific antigen(F/T PSA)ratio,considering the new broad serum total PSA(T-PSA)“gray zone”of 2.0–25.0 ng ml^(−1)in differential diagnosis of prostate cancer(PCa)and benign prostate diseases(BPD)in men over 50 years in Western China.A total of 1655 patients were included,528 with PCa and 1127 with *** T-PSA,free PSA(F-PSA),and F/T PSA ratio were *** operating characteristic curves were used to assess the efficiency of PSA and F/T PSA *** were 47.4%of cancer patients with T-PSA of 2.0–25.0 ng ml^(−1).When T-PSA was 2.0–4.0 ng ml^(−1),4.0–10.0 ng ml^(−1),and 10.0–25.0 ng ml^(−1),the area under the curve(AUC)of F/T PSA ratio was 0.749,0.769,and 0.761,*** best AUC of F/T PSA ratio was 0.811 when T-PSA was 2.0–25.0 ng ml^(−1),with a specificity of 0.732,a sensitivity of 0.788,and an optimal cutoff value of 15.5%.The AUC of F/T PSA ratio in different age groups(50–59 years,60–69 years,70–79 years,and≥80 years)was 0.767,0.806,0.815,and 0.833,respectively,and the best sensitivity(0.857)and specificity(0.802)were observed in patients over 80 *** T-PSA trend was in accordance with the Gleason score,tumor node metastasis(TNM)stage,and American Joint Committee on Cancer prognosis ***,the F/T PSA ratio can facilitate the differential diagnosis of PCa and BPD in the broad T-PSA“gray zone”.Serum T-PSA can be a Gleason score and prognostic indicator.

关键词： free/total prostate-specific antigen ratio gray zone prostate-specific antigen prostate cancer total prostate-specific antigen

Pre-Cryogenian integrative stratigraphy,biotas,and paleogeographical evolution of the Qinghai-Tibetan Plateau and its surrounding areas

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Science China Earth Sciences 2024年第4期67卷 899-918页

作者： Peiyuan HU Qingguo zhai Guochun zhao Peter A.CAWOOD Yue TANG Yiming LIU Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China Department of Earth Sciences University of Hong KongPokfulam RoadHong Kong 999077China State Key Laboratory of Continental Dynamics Department of GeologyNorthwest UniversityXi’an 710069China School of Earth Atmosphere&EnvironmentMonash UniversityMelbourneVIC 3800Australia

The composition and geological evolution of pre-Cryogenian material in the Tibetan Plateau and its surrounding areas have played an important role in studying the formation and evolution of early supercontinents on *** paper systematically summarizes the characteristics of pre-Cryogenian sedimentation,paleontology,magmatism,and metamorphism in the Tibetan Plateau and its surrounding *** on existing data,the records of pre-Cryogenian sedimentation and paleontology are mainly concentrated in the Meso-Neoproterozoic,with relatively few records from the Paleoproterozoic or *** oldest geological record is the Hadean detrital zircons in the metamorphosed sedimentary rocks of the Himalaya and Qamdo areas(ca.4.0 Ga).The Tibetan Plateau and surrounding areas preserve records related to the formation and evolution of the Kenor supercraton,and the Columbia,Rodinia,and Gondwana ***-Cryogenian basements can be divided into three types:Tarim-,Yangtze-,and *** Tarim-type basement has a paleogeographic affinity with the northern margins of the Australian and Indian continents and lacks detrital zircon age peaks and magmatic-metamorphic records related to the Rodinia assembly(ca.1.3-0.9 Ga).The Yangtze-type basement records volcanic activity related to global cooling in the latest pre-Cryogenian period and contains Meso-Neoproterozoic stromatolite and micropaleoflora fossils,as well as magmaticmetamorphic records related to Rodinia assembly(ca.1.1-1.0 Ga).The Lhasa-type basement is characterized by Neoproterozoic rift-related sediment records(ca.900 Ma)and high-pressure metamorphic events(ca.650 Ma),with a prominent peak of detrital zircon ages of ca.1.2-1.1 *** is likely to have a paleogeographic affinity with the African continent.

关键词： Tibetan Plateau Pre-Cryogenian Sedimentation Fossils Paleogeographic evolution

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A columnar multi-layer sliding triboelectric nanogenerator for water wave energy harvesting independent of wave height and direction

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Nano Research 2024年第4期17卷 3029-3034页

作者： Xue Miao Hanxiao Yang Zekun Li Meifei Cheng Yilin zhao Lingyu Wan Aifang Yu Junyi zhai Center on NanoEnergy Research School of Physical Science and TechnologyGuangxi UniversityNanning 530004China Beijing Institute of Nano Energy and Nano Systems Chinese Academy of SciencesBeijing 101400China School of Nanoscience and Engineering University of Chinese Academy of ScienceBeijing 101408China

The ocean,with its highly variable and complex meteorological conditions,harbors enormous renewable *** nanogenerators(TENGs),which possess unique advantages,show exciting prospects in water wave energy *** to design and optimize TENGs to cover all characteristic water wave energies and achieve efficient energy utilization is *** this paper,we carefully designed and fabricated a columnar multi-layer sliding TENG(CMLS-TENG)that can harvest water wave energy independent of wave height and *** rods with a hollow acrylic spherical shell were introduced to deliver wave energy,ensuring that the CMLS-TENG can work in all directions from 0°to 360°.Based on the sliding structure,switching the optimized CMLS-TENG is independent of wave *** optimized CMLS-TENG can achieve a total power density of 730 mW/m^(3) at a wave height of only 4.8 cm regardless of wave direction,which can illuminate multiple light-emitting diodes(LEDs)to provide lighting and provide power to a watch and a hygrometer for temperature and humidity *** work provides new choices and hopes for the effective collection of full-range water wave energy.

关键词： triboelectric nanogenerator wave energy multi-direction columnar slide

Alleviative effects of Bacillus coagulans strains on irritable bowel syndrome-unraveling strain specificity through physiological and genomic analysis

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Food Science and Human Wellness 2024年第4期13卷 1845-1855页

作者： Jiang Cao Leilei Yu Jianxin zhao Hao Zhang Wei Chen Yuzheng Xue Qixiao zhai State Key Laboratory of Food Science and Technology Jiangnan UniversityWuxi 214122China School of Food Science and Technology Jiangnan UniversityWuxi 214122China National Engineering Research Center for Functional Food Jiangnan UniversityWuxi 214122China Wuxi Translational Medicine Research Center and Jiangsu Translational Medicine Research Institute Wuxi Branch Wuxi 214122China Department of Gastroenterology Affiliated Hospital of Jiangnan UniversityWuxi 214122China

The high intraspecies heterogeneity of Baciillus coagulans leads to significant phenotypic differences among different ***,6 *** strains were tested in the present study using an irritable bowel syndrome(IBS)animal model to determine whether the IBS-alleviating effects of *** strains are *** results of this study showed that the ingestion of *** GBI-30,6086,and *** CCFM1041 significantly alleviated IBS symptoms in *** contrast,other *** strains showed no or limited alleviating effects on IBS *** to our experimental results,the two main common features of these strains were as follows:1)The resistance of vegetative cells to bile salts,and 2)ability to synthesize specific lipids and secondary *** strains based on these two indicators may greatly reduce costs and provide a basis for mining new functional *** *** results also suggest that administration of *** could significantly regulate microbiota dysbiosis in animal ***,the close relationships between the gut microbiota,gut microbiota metabolites,and IBS were further confirmed in this study.

关键词： Baciillus coagulans Irritable bowel syndrome Resistance to bile salts Comparative genomic analysis Gut microbiota

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Observation of regular pulse train in a narrow-band optoelectronic oscillator

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Optoelectronics Letters 2024年第2期20卷 94-99页

作者： zhao Chunbo TUO Zhuoyue YAO Jiali HE Yuling zhai Shenghua MENG Yansong China Academy of Space Technology(Xi’an) Xi’an 710000China National Key Laboratory of Science and Technology on Space Microwave Xi’an 710000China1

We have experimentally observed a new operating state of a regular pulse train in a narrow-band optoelectronic oscillator(OEO) system, where the direct-current(DC) bias of the Mach-Zehnder modulator is set at the maximum value of the transmission transfer function instead of the usual quadrature point. The observed quasi-steady-state pulse train is distinctly periodic, with a period of 10.5 μs and a center frequency of 10 GHz, and resembles a mode-locked OEO in its waveform. The formation of regular pulses here may arise from the dynamic balance of nonlinearity and narrow-band filter effects, with the transient characteristics of the pulses arising mainly from instabilities between the gain and cavity loss. Our results are of great importance for deepening the understanding of the nonlinear dynamical processes in OEO systems.

关键词： optoelectronic pulse modulator

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