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Deep learning for automatically predicting early haematoma expansion in Chinese patients

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Stroke & Vascular Neurology 2021年第4期6卷 610-614,I0067-I0072页

作者： Jia-wei Zhong Yu-jia Jin Zai-jun Song Bo Lin Xiao-hui lu Fang Chen lu-sha Tong Department of Neurology Zhejiang University School of Medicine Second Affiliated HospitalHangzhouChina College of Computer Science and Technology Zhejiang UniversityHangzhouChina State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang University School of Mechanical EngineeringHangzhouChina Department of Computer Science and Engineering Nanjing University of Aeronautics and AstronauticsNanjingChina

Background and purpose Early haematoma expansion is determinative in predicting outcome of intracerebral haemorrhage(ICH)*** aims of this study are to develop a novel prediction model for haematoma expansion by applying deep learning model and validate its prediction *** Data of this study were obtained from a prospectively enrolled cohort of patients with primary supratentorial ICH from our *** developed a deep learning model to predict haematoma expansion and compared its performance with conventional non-contrast CT(NCCT)*** evaluate the predictability of this model,it was also compared with a logistic regression model based on haematoma volume or the BAT *** A total of 266 patients were finally included for analysis,and 74(27.8%)of them experienced early haematoma *** deep learning model exhibited highest C statistic as 0.80,compared with 0.64,0.65,0.51,0.58 and 0.55 for hypodensities,black hole sign,blend sign,fluid level and irregular shape,*** the C statistics for swirl sign(0.70;p=0.211)and heterogenous density(0.70;p=0.141)were not significantly higher than that of the deep learning ***,the predictive value for the deep learning model was significantly superior to that of the logistic model of haematoma volume(0.62;p=0.042)and the BAT score(0.65;p=0.042).Conclusions Compared with the conventional NCCT markers and BAT predictive model,the deep learning algorithm showed superiority for predicting early haematoma expansion in ICH patients.

关键词： patients expansion predicting

Flexible inorganic piezoelectric functional films and their applications

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Journal of Advanced Ceramics 2023年第3期12卷 433-462页

作者： Liyun Zhen Lijun lu Yongtao Yao Jingquan Liu Bin Yang National Key Laboratory of Science and Technology on Micro/Nano Fabrication Shanghai Jiao Tong UniversityShanghai 200240China Department of Micro/Nano Electronics School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of TechnologyHarbin 150001China

Piezoelectric materials play an increasingly important role in energy harvesters,sensors,and *** and thin piezoelectric films have been demonstrated to provide advanced functionalities and improved ***,the research on flexible inorganic piezoelectric thin films has rarely been systematically ***,we summarize the recent advances in the flexible inorganic piezoelectric thin films,focusing on their structural designs,fabrication techniques,and applications in various practical ***,different fabrication techniques suitable for diverse inorganic piezoelectric nanostructures are reviewed,including sol-gel,hydrothermal,electrospinning,and other techniques,and the integration process with flexible substrates is further *** and industrial applications of the flexible piezoelectric thin films are ***,some existing challenges and future perspectives are discussed.

关键词： inorganic piezoelectric thin films fabrication techniques structural design flexible electronics

Modal parameter identification and damping ratio estimation from the full-scale measurements of a typical Tibetan wooden structure

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Earthquake Engineering and Engineering Vibration 2016年第4期15卷 681-695页

作者： Dai lu Yang Na S.S.Law Yang Qingshan School of Civil Engineering Beijing Jiaotong University

Tibetan heritage buildings have a high historical and cultural value. They have endured adverse environmental loadings over hundreds of years without significant damage. However, there are few reports on their structural characteristics under normal environmental loadings and their behavior under dynamic loadings. In this research, a typical Tibetan wooden wall-frame building is selected to study its dynamic characteristics. Field measurements of the structure were conducted under environmental excitation to collect acceleration responses. The stochastic subspace identification （SSI） method was adopted to calculate the structural modal parameters and obtain the out-of-plane vibration characteristics of the slab and frames. The results indicated that the wall-frame structure had a lower out-of-plane stiffness and greater in-plane stiffness due to the presence of stone walls. Due to poor identified damping ratio estimates from the SSI method, a method based on the variance upper bound was proposed to complement the existing variance lower bound method for estimating the modal damping ratio to address the significant damping variability obtained from different points and measurements. The feasibility of the proposed method was illustrated with the measured data from the floor slab of the structure. The variance lower and upper bound methods both provided consistent results compared to those from the traditional SSI method.

关键词： Tibetan wooden structure field test modal parameters damping ratio variance upper/lower bound

Wheat growth, photosynthesis and physiological characteristics under different soil Zn levels

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Journal of Integrative Agriculture 2022年第7期21卷 1927-1940页

作者： LI Si-ping ZENG lu-sheng SU Zhong-liang College of Resources and Environmental Sciences Qingdao Agricultural UniversityQingdao 266109P.R.China College of Chemical Engineering Qingdao University of Science and TechnologyQingdao 266031P.R.China

In recent years,heavy metal hazards in the soil have seriously affected agricultural *** study aims to examine the effects of different levels of heavy metal Zn on the growth,photosynthesis and physiological characteristics of wheat,and provide a theoretical basis for the diagnosis and control of heavy metal pollution in agricultural *** field test method was used to explore the changes of wheat agronomic traits,photosynthetic capacity,chlorophyll fluorescence parameters,spectral characteristic curve,active oxygen metabolism system,cell ultrastructure,and yield,under different Zn levels(0,250,500,750,and 1000 mg kg^(-1)).The results show that,low-level Zn treatments can effectively promote the synthesis of wheat chlorophyll,improve photosynthetic capacity,and increase *** yield of ZnL1(250 mg kg^(-1))was the highest in the two-year test,which increased by 20.4%in 2018 and 13.9%in 2019 compared with CK(0 mg kg^(-1)).However,a high Zn level had a significant stress effect on the photosystem of ***(reaction center performance index)and Fv/Fm(maximum photochemical efficiency)were significantly reduced,the active oxygen metabolism system was damaged,and the photosynthetic capacity was reduced,which in turn led to reduced *** them,the yield of ZnL4(1000 mg kg^(-1))was the lowest in the two-year test,which was 28.1 and 16.4%lower than CK in 2018 and 2019,*** green peak position of ZnL3 and ZnL4 had"red shift"to the long wave direction,while the red valley position of ZnL4 had"blue shift"to the short wave *** ZnL4,some wheat leaf organelles began to decompose,vacuoles increased,cytoplasm decreased,cell walls thickened,chloroplast basal lamellae were disordered,and mitochondrial membranes *** regression and Path analysis showed that Pn(net photosynthetic rate)played a leading role in the formation of ***(RDA)analysis showed that the optimal Zn level for wheat growth was abou

关键词： heavy metals zinc growth index photosynthetic characteristics chlorophyll fluorescence parameters wheat

Theoretical Studies on the Structure and Spectrum of Imidazole-Chloranil Charge Transfer Complex

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Chinese Journal of Chemical Physics 2008年第6期21卷 560-568页

作者： Hai-long Wang Tong-tong lu Tian-jing He Dong-ming Chen Department of Chemical Physics University oF Science and Technology of China Hefei 230026 China

UV-Vis absorption spectra of the molecular complex formed by imidazole （Ira） and chloranil （CA） were measured in chloroform. The stoichiometry of the imidazole-chloranil （hn-CA） complex was determined as 1：1 by applying Benesi-Hildebrand＇s equation and Job＇s continuous variation method. Density function theory （DFT） and MP2 calculations were performed to study the structures and the binding energies of the Im-CA complex. The calculations located four conformations （denoted as S1-S4） for the Ira-CA complex, two edge（Im）-to-face（CA） linked and two edge（Im）-to-edge（CA） linked. It was found that the edge-to-face conformers are more stable than the edge-to-edge ones. The bonding characteristics of these conformers were investigated with natural population analysis （NPA）, topological analysis of electron density, and natural bond orbital （NBO） analysis. It was revealed that the edge-to-face conformers are charge-transfer （CT） complexes whereas the edge-to-edge conformers are the hydrogen bond complexes. For the most stable conformation of the Ira-CA complex （S1）, the charge transfer interaction of the imidazole n（N15） lone pair orbital with the chloranil π＊（C1=O7） orbital plays a crucial role in the Ira-CA binding, and the binding is further strengthened by the O7… H2O hydrogen bond. The electronic excitation energies of the complex （S1） were calculated with time-dependent DFT （TDDFT）, and the observed UV-Visible spectrum of the complex was analyzed based on the computed results.

关键词： Charge-transfer complex Density functional theory MP2 Imidazole-chloranil

Preparation and application of mesoporous core-shell nanosilica using leucine derivative as template in effective drug delivery

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Chinese Chemical Letters 2020年第5期31卷 1165-1167页

作者： Wei Zhang Qiming Kan lu Chen luyao Xie Mingshu Cui Ziyue Xi Yanru Xi Sanming Li lu Xu School of Pharmacy Shenyang Pharmaceutical UniversityShenyang 110016China School of Life Science&Bio-pharmaceutics Shenyang Pharmaceutical UniversityShenyang 110016China

Core-shell structured mesoporous silica nanoparticles have been firstly synthesized with the new template from L-leucine methyl ester hydrochloride(H-Leu-OMe·HCl).LMSNs were characterized by transmission electron microscopy(TEM),nitrogen adsorption/desorption,and small-angle X-ray diffraction(SAXRD),demonstrating a well-ordered *** loading doxorubicin hydrochloride(Dox) into pores,considerable loading capacity of 30.5% and favorable cumulative release amount were *** assay suggested that Dox-loaded LMSNs demonstrated great promise to *** use of MSNs with the synthesized template,as a drug delivery carrier,will exte nd the pharmaceutical applications of silica materials.

关键词： Core-shell structure Mesoporous silica nanoparticles Biomimetic method Template synthesis Self-assembly

The impacts of evaluation indices and normalization methods on E-TOPSIS optimization of return vent height for an impinging jet ventilation system

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Building Simulation 2022年第12期15卷 2081-2095页

作者： Chao Qin Shi-Hai Wu Hong-Qiang Fang Wei-Zhen lu Department of Architecture and Civil Engineering City University of Hong KongHong KongChina School of Architecture and Art Central South UniversityChangshaChina

Stratified air distribution(STRAD)systems have been intensively investigated in recent decades for their energy-saving potential and good indoor air quality ***,the evaluation indices used to optimize STRAD systems and the normalization methods for weight calculation vary from one research to *** study aims to investigate the impacts of evaluation indices on the optimal return vent height of a room cooled by an impinging jet ventilation system(one type of STRAD system).The effects of several widely used normalization methods(i.e.,vector normalization,sum normalization,min-max normalization,and no normalization)on indices weights are *** evaluation indices are cooling coil load(Q_(coil)),energy-saving potential(ΔQ_(coil)),mean age of air(MAA),CO_(2) mass fraction,temperature difference between the head and ankles(ΔT_(0.1-1.1)),predicted mean vote(PMV),predicted percentage of dissatisfied(PPD),and draft rate(DR).The multi-criteria optimization method is the entropy-based technique for order preference by similarity to ideal solution(E-TOPSIS).As a result,the min-max normalization method evens the weight of each index and results in unreasonable relative ***,the raw matrix(i.e.,the normalization is omitted)is suggested for weight *** these indices,ΔT_(0.1-1.1) and PPD play critical ***ΔT_(0.1-1.1),the optimal return vent height changes from mid-level to near-floor,while without PPD,it changes to *** important result is that the Q_(coil) plays the most trivial role,followed by MAA and ***,the optimal return vent height is not determined by energy-saving performance but by performances of thermal comfort.

关键词： evaluation indices normalization method impinging jet ventilation return vent height E-TOPSIS

Ruthenium Nanoparticles Loaded on Carbon as Effective Catalyst for Highly Selective Hydrogenation of 4,4′-Methylenedianiline

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Chemical Research in Chinese Universities 2012年第5期28卷 882-885页

作者： DU Wen-qiang RONG Ze-ming lu Xin-yi WANG Yi-fan lu Lian-hai QU Jing-ping State Key Laboratory of Fine Chemicals School of Chemical EngineeringDalian University of TechnologyDalian 116024P.R.China

Supported Ru-based catalysts, prepared by a surfactant-stabilized colloidal method, exhibited a good selectivity to bis（4-aminocyclohexyl）methane via the hydrogenation of 4,4′-methylenedianiline. Transmission electron microscopy（TEM） and X-ray diffraction（XRD） characterization showed Ru nanoparticles were well-dispersed on activated carbon, leading to the high activity and selectivity to the product.

关键词： Ruthenium-based catalyst 4 4′-Methylenedianiline Hydrogenation Selectivity

Improved interfacial properties of GaAs MOS capacitor with NH3-plasma-treated ZnON as interfacial passivation layer

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Journal of Semiconductors 2017年第9期38卷 56-61页

作者： Jingkang Gong Jingping Xu lu Liu Hanhan lu Xiaoyu Liu Yaoyao Feng School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China

The GaAs MOS capacitor was fabricated with HfTiON as high-k gate dielectric and NH3-plasma-treated ZnON as interfacial passivation layer （IPL）, and its interracial and electrical properties are investigated compared to its counterparts with ZnON IPL but no NH3-plasma treatment and without ZnON IPL and no plasma treatment. Experimental results show that low interface-state density near midgap （1.17×10^12 cm^-2eV^-1） and small gate leakage current density have been achieved for the GaAs MOS device with the stacked gate dielectric of Hf-TiON/ZnON plus NH3-plasma treatment. These improvements could be ascribed to the fact that the ZnON IPL can effectively block in-diffusion of oxygen atoms and out-diffusion of Ga and As atoms, and the NH3-plasma treatment can provide not only N atoms but also H atoms and NH radicals, which is greatly beneficial to removal of defective Ga/As oxides and As-As band, giving a high-quality ZnON/GaAs interface.

关键词： GaAs MOS ZnON interfacial passivation layer NH3-plasma treatment