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A new Curvularia lunata variety discovered in Huanghuaihai Region in China

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Journal of Integrative Agriculture 2020年第2期19卷 551-560页

作者： CHANG Jia-ying LIU shu-sen SHI Jie guo Ning ZHANG Hai-jian chen Jie Plant Protection Institute Hebei Academy of Agricultural and Forestry Sciences/Key Laboratory of IPM on Crops in Northern Region of North ChinaMinistry of Agriculture and Rural Affairs/IPM Centre of Hebei ProvinceBaoding 071000P.R.China School of Agriculture and Biology Shanghai Jiao Tong UniversityShanghai 200240P.R.China

The purpose of this study was to identify the dominant pathogens of Curvularia leaf spot and their pathogenicity variation in Huanghuaihai Region of China in recent *** 2013 and 2016–2017,the occurrences of Curvularia leaf spots on maize were investigated in fields located in Henan,Hebei,Shandong,and Anhui provinces,and 292 fungi were isolated from diseased *** fungal isolates were subjected to morphological identification,and 232 isolates were found to have about 70%uncurved conidia and were identified as Curvularia lunata *** of the conidia of 2 representative isolates,namely,HNWB-131 and HNWB-185,were oblong with parallel septations and were distinctly different from a reference isolate *** further determination,the internal transcribed spacer(ITS),glyceraldehyde 3-phosphate dehydrogenase(GPDH),the large subunit(LSU),and translation elongation factor 1-alpha(EF1-α)sequences of HNWB-131,HNWB-185,and CX-3 were amplified and *** results of sequence analysis showed that the 4 gene sequences from the 3 isolates had a similarity of more than 99%to *** on the sequences of ITS and the combined data of the 4 genes,neighbor-joining trees were constructed for phylogenetic *** results indicated that these 3 isolates were clustered together with *** expression of Clg2 p and ClUrase genes in mycelia and conidia was significantly(P<0.05)higher in CX-3 than in HNWB-131 and *** study found that the dominant pathogen of Curvularia leaf spot was a new variety of *** with morphological variations in Huanghuaihai Region from 2013 to *** pathogenicity of the *** *** not significantly enhanced,and the expression of Clg2 p and ClUrase genes of *** *** decreased.

关键词： Curvularia lunata Curvularia leaf spot morphological identification phylogenetic analysis

Development of grouting materials with application to the protection of the geological relics of the Weng’an Biota

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Journal of Mountain Science 2019年第8期16卷 1962-1974页

作者： WANG Sheng shu Zhi-hong guo Kai-bin JIAN Li-ming chen Li-yi State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu 610059China chengdu Institute of Survey&Investigation Chengdu 610036China

The Weng’an Biota, a fossil KonservatLagerst?tte in South China that is c. 570 – 609 myr old, preserves the world’s oldest zoolite and provides a unique empirical record for studying animal origins and early evolution. Due to geological disasters caused by the exploitation of the local phosphate mine, part of the fossilized records and the geological sections of the Weng’an Biota have been seriously damaged. Protection of this unique fossil area is urgently required. In this research, an innovative scheme for the protection of the geological relics of the Weng’an Biota is proposed by backfilling the mine cavity with specially formulated grouting materials. In view of the shortcomings of the current grouting materials, such as the high proportion of water separation, the low stone percentage and high cost, newly developed grout materials consisting of mixtures of cement-fly ash-expansion agent(C-F-E) were systematically studied by a combined method of theoretical analysis and experimental study. Firstly, new grouting materials(C-F-E) were developed using selected proportions of(1) Portland cement(P·O 32.5),(2) external admixture(Fly ash),(3) expansion agent(NV) and(4) admixture(DFZ). Then, the properties of new grouting materials(C-F-E), such as stability, stone percentage, rheology, fluidity, setting time and compressive strength were evaluated by laboratory tests. Finally, a new model of the hydration process was proposed for these newly developed grouting materials based on a detailed scanning electron microscopy(SEM) study of their microstructural development. These research results will provide an effective solution to the protection of the geological relics of the Weng’an Biota. Additionally, these grouting materials may prove suitable for solving similar problems in the management of most mine cavities requiring stabilization in the future.

关键词： Fly ash Hydration process Mine cavity Backfill management Fossil remains

Construction of Prediction Model of Foodborne Disease Outbreaks and Its Trend Prediction—Guizhou Province,China,2023-2025

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China CDC weekly 2024年第18期6卷 408-408,I0009,409-412,I0010-I0015页

作者： Li Zhang Sufang Xiong shu Zhu Jigui Tian Qingyuan chen Xiaobo Luo Hua guo Institute of Public Health Surveillance and Evaluation Guizhou Center for Disease Control and PreventionGuiyang CityGuizhou ProvinceChina School of Public Health Guizhou Medical University.Guiyang CityGuizhou ProvinceChina

Objective:Foodborne diseases pose a significant public health concern *** study aims to analyze the correlation between disease prevalence and climatic conditions,forecast the pattern of foodborne disease outbreaks,and offer insights for effective prevention and control strategies and optimizing health resource allocation policies in Guizhou ***:This study utilized theχ^(2) test and four comprehensive prediction models to analyze foodborne disease outbreaks recorded in the Guizhou Foodborne Disease Outbreak system between 2012 and *** best-performing model was chosen to forecast the trend of foodborne disease outbreaks in Guizhou Province,***:Significant variations were observed in the incidence of foodborne disease outbreaks in Guizhou Province concerning various meteorological factors(all P≤0.05).Among all models,the SARIMA-ARIMAX combined model demonstrated the most accurate predictive performance(RMSE:Prophet model=67.645,SARIMA model=3.953,ARIMAX model=26.544,SARIMA-ARIMAX model=26.196;MAPE:Prophet model=42.357%,SARIMA model=37.740%,ARIMAX model=15.289%,SARIMA-ARIMAX model=13.961%).Conclusion:The analysis indicates that foodborne disease outbreaks in Guizhou Province demonstrate distinct seasonal *** is recommended to concentrate prevention efforts during peak *** SARIMA-ARIMAX hybrid model enhances the precision of monthly forecasts for foodborne disease outbreaks,offering valuable insights for future prevention and control strategies.

关键词： Guizhou prevention offering

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基于渐进机器学习的中文问句匹配方法

工程科学学报 2025年第1期47卷 79-90页

作者：贺学剑陈安琪郭志强王致茹陈群河南林业职业学院洛阳471002 西北工业大学软件学院西安710072 西北工业大学计算机学院西安710072

问句匹配旨在判断不同问句的意图是否相近.近年来,随着大型预训练语言模型的发展,利用其挖掘问句对在语义层面隐含的匹配信息,取得了目前为止最好的性能.然而,由于基于独立同分布假设,在真实场景中,这些深度学习模型的性能仍然受制于训... 详细信息

问句匹配旨在判断不同问句的意图是否相近.近年来,随着大型预训练语言模型的发展,利用其挖掘问句对在语义层面隐含的匹配信息,取得了目前为止最好的性能.然而,由于基于独立同分布假设,在真实场景中,这些深度学习模型的性能仍然受制于训练数据的充足程度和目标数据与训练数据之间的分布漂移.本文提出一种基于渐进机器学习的中文问句匹配方法.该方法基于渐进机器学习框架,从不同角度提取问句特征,构建融合各类特征信息的因子图,然后通过迭代的因子推理实现从易到难的渐进学习.在特征建模中,设计并实现了两种类型特征的提取:(1)基于TF-IDF(Term frequency-inverse document frequency)的关键词特征;(2)基于DNN(Deep neural network)的深度语义特征.最后,通过通用的基准中文数据集LCQMC和BQ corpus验证了所提方法的有效性.实验表明,相比于单纯的深度学习模型,基于渐进机器学习的方法可以有效提升问句匹配的准确率,且其性能优势随着标签训练数据的减少而增大.

关键词：自然语言理解中文问句匹配渐进机器学习自然语言预训练模型因子图推理

Molecular recognition of sulfonatocalixarene with organic cations at the self-assembled interface：a thermodynamic investigation

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Chinese Chemical Letters 2017年第4期28卷 787-792页

作者： Yu-chen Pan Han-Wen Tian shu Peng Xin-Yue Hu Dong-Sheng guo Department of Chemistry State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China Collaborative Innovation Center of Chemical Science and Engineering Nankai University Tianjin 300071 China

A microcalorimetric study on molecular recognition of p-sulfonatocalix[4]arene derivatives at selfassembled interface in comparison with in bulk water was performed,inspired by the dramatic change in physicochemical characteristics from bulk water to interface.A total of six cationic molecules were screened as model guests,including ammonium（NH_4~＋）,guanidinium（Gdm~＋）.N,N＇-dimethyl-1,4-diazabicyclo[2.2.2]octane（DMDABCO^（2＋））,tropylium（Tpm~＋）,N-methyl pyridinium（N-mPY＊） and methyl viologen（MV^（2＋））.The complexation with NH_4~＋.Gdm~＋ and DMDABCO2＊ is pronouncedly enhanced when the recognition process moved from bulk water to interface,whereas the complexation stabilities with Tpm~＋,N-mPY~＋ and MV2＊ increase slightly or even decrease to some extent.A more interesting phenomenon arises from the NH_4~＋/Gdm~＋ pair that the thermodynamic origin at interface differs definitely from each other although with similar association *** results were discussed in terms of differential driving forces,electrostatic,hydrogen bond as well as π-stacking interactions,originating from the unique physicochemical features of interfaces,mainly the polarity and dielectric constant.

关键词： Molecular recognition Calixarene Interface Thermodynamics Self-assembly

Value of red blood cell distribution width in prediction of diastolic dysfunction in cirrhotic cardiomyopathy

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World Journal of Gastroenterology 2023年第15期29卷 2322-2335页

作者： Yan-Ling chen Zi-Wen Zhao shu-Mei Li Yong-Zhe guo Department of Gastroenterology Fujian Medical University Union HospitalFuzhou 350001Fujian ProvinceChina Department of Cardiology Fujian Medical University Union HospitalFuzhou 350001Fujian ProvinceChina

BACKGROUND Clinical diagnosis of cirrhotic cardiomyopathy(CCM) often encounters challenges of lack of timeliness and disease severity, with the commonly positive indicator usually associated with advanced heart *** To explore suitable biomarkers for early CCM *** A total of 505 eligible patients were enrolled in this study and divided into four groups according to Child-Pugh classification: Group Ⅰ, Class A without CCM(105 cases);Group Ⅱ, Class A with CCM(175 cases);Group Ⅲ, Class B with CCM(139 cases);and Group Ⅳ, Class C with CCM(86 cases). Logistic regression and receiver operating characteristic(ROC) curve analyses were performed to determine whether red blood cell distribution width(RDW) was an independent risk factor for CCM risk. The relationships between RDW and Child-Pugh scores, Model for End-Stage Liver Disease(MELD) scores, and N-terminal pro-brain natriuretic peptide(NT-proBNP) were analyzed by Pearson correlation *** A constant RDW increase was evident from Group Ⅰ to Group Ⅳ(12.54 ± 0.85, 13.29 ± 1.19, 14.30 ± 1.96, and 16.25 ± 2.13, respectively). Pearson correlation analysis showed that RDW was positively correlated with Child-Pugh scores(r = 0.642, P < 0.001), MELD scores(r = 0.592, P < 0.001), and NT-proBNP(r = 0.715, P < 0.001). Furthermore, between Group Ⅰ and Group Ⅱ, RDW was the only significant index(odds ratio: 2.175, 95% confidence interval [CI]: 1.549-3.054, P < 0.001), and it reached statistical significance when examined by ROC curve analysis(area under the curve: 0.686, 95%CI: 0.624-0.748, P < 0.001).CONCLUSION RDW can serve as an effective and accessible clinical indicator for the prediction of diastolic dysfunction in CCM, in which a numerical value of more than 13.05% may indicate an increasing CCM risk.

关键词： Cirrhotic cardiomyopathy Child-Pugh Diagnosis N-terminal pro-brain natriuretic peptide Red blood cell distribution width

Alteration of encephalomyocarditis virus pathogenicity due to a mutation at position 100 of VP1

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Science China(Life Sciences) 2011年第6期54卷 535-543页

作者： ZHU shu GE XinNa GONG XiaoWen guo Xin chen YanHong YANG HanChun Key Laboratory of Zoonosis of Ministry of Agriculture College of Veterinary Medicine and State Key Laboratory of AgrobiotechnologyChina Agricultural UniversityBeijing 100193China

Encephalomyocarditis virus (EMCV) infection leads to many diseases including encephalitis,myocarditis and diabetes in its natural host,the *** this study,we generated four cDNA clones with a point mutation at position 100 of *** amino acids isoleucine,alanine,serine and proline were substituted with threonine in the four different clones of EMCV strain BJC3 by site-specific mutagenesis,and viable viruses were *** all mutants and wild-type viruses display different plaque morphologies,they replicate comparably in BHK-21 *** pathogenicity of the mutated viruses was systematically analyzed to investigate the importance of this amino acid in the viral pathogenicity and disease phenotype of EMCV infection in *** results showed that the isoleucine(T1100I) and proline-mutated viruses (T1100P) exhibited a reduced mortality,lower cerebral virus loads and alleviated brain damage while the viruses with serine (T1100S) and alanine (T1100A) substitutions displayed similar properties as the wild-type *** findings indicate that the amino acid at position 100 of VP1 is important for EMCV in vivo infection,and its mutation alters the pathogenicity of viral infection in mice.

关键词： encephalomyocarditis virus (EMCV) VP1 mutation pathogenicity

Emerging direct current triboelectric nanogenerator for high-entropy mechanical energy harvesting

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Science China(Technological Sciences) 2024年第5期67卷 1297-1316页

作者： chen Jie guo RuiLong guo HengYu College of Physics and Electronic Engineering Chongqing Normal UniversityChongqing 401331China Department of Applied Physics Chongqing UniversityChongqing 401331China

In the era of the Internet of Things(IoT),the provision of sustainable power to distributed,mobile,and low-power-consumption electronic devices is a critical *** overcome this challenge,the triboelectric nanogenerator(TENG),a highly efficient high-entropy mechanical energy harvesting device,was developed in *** device enables the direct conversion of irregular and low-frequency mechanical energy into pulsed alternating current(AC)***,the incompatibility of most electronic devices with AC signals necessitates rectifier circuits or generators that deliver direct current(DC)*** recent years,DC-TENGs have undergone extensive development,achieving significant milestones in various application fields while also facing crucial challenges that require *** this review,three categories of DC-TENG devices with distinct operating mechanisms are comprehensively explored:multiphase coupling,mechanical rectification,and air *** typical structures and working mechanisms are thoroughly discussed,and specific output performance limitations,along with corresponding optimization strategies,are ***,the applications of DC-TENGs in various scenarios are ***,the challenges faced by DC-TENGs and potential solutions are analyzed to guide further advancements in this technology.

关键词： TENG direct current working mechanisms output performance limitations optimization strategies

Air-stable room-temperature photodetector based on large-diameter small-bundle single-wall carbon nanotube films

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Journal of Materials Science & Technology 2021年第14期73卷 205-209页

作者： Zha-Kun chen Xian-Gang Hu shu-Yu guo Peng-Xiang Hou Chang Liu Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026China School of Materials Science and Engineering Northeastern UniversityShenyang 110819China

*** Photodetectors are of great importance for a variety of industrial and scientific applications,such as in spectroscopy,solar energy harvesting,thermo-therapy,military detection,and a variety of biochemical sensors[1–5].Nowadays,relatively mature light detectors are mainly based on semiconducting materials including Ga N,In Ga As and Hg Cd Te[6,7],and their light detection capability can reach 1011 Jones.

关键词： bundle harvesting carbon