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On Meromorphic Solutions of a Certain Type of Nonlinear Differential Equations

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Acta Mathematica Sinica,English Series 2017年第12期33卷 1597-1608页

作者： Xiao Qing LU liang wen liao Jun WANG Mathematics and Information Technology School Jiangsu Second Normal UniversityNanjing 210013P.R.China Department of Mathematics Nanjing UniversityNanjing 210093P.R.China School of Mathematical Sciences Fudan UniversityShanghai 200433P.R.China

We consider transcendental merornorphic solutions with N（r, f） = S（r, f） of the following type of nonlinear differential equations：f^n ＋ Pn-2（f） = p1（z）e~α1（z）＋ p2（z）^α2（z）,where n ≥2 is an integer, Pn-2（f） is a differential polynomial in f of degree not greater than n-2 with small functions of f as its coefficients, p1（z）, p2（z） are nonzero small functions of f1 and α1（z）, α2（z） are nonconstant entire functions. In particular, we give out the conditions for ensuring the existence of meromorphic solutions and their possible forms of the above equation. Our results extend and improve some known results obtained most recently.

关键词： Meromorphic solutions nonlinear differential equations small functions Nevanlinna's value distribution theory

The Uniqueness of the Entire Functions Whose n-th Powers Share a Small Function with Their Derivatives

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Acta Mathematica Sinica,English Series 2014年第5期30卷 785-792页

作者： Jie ZHANG Hai Yan KANG liang wen liao College of Science China University of Mining and Technology Department of Mathematics Nanjing University

In this paper, we prove the following result： Let f（z） be a transcendental entire function, Q（z） ≡ 0 be a small function of f（z）, and n ≥ 2 be a positive integer. If fn（z） and（fn（z）） share Q（z） CM, then f（z） = ce 1 nz, where c is a nonzero constant. This result extends Lv＇s result from the case of polynomial to small entire function.

关键词： Uniqueness entire function share values small function

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数控加工物理仿真关键技术的初探

系统仿真学报 2003年第5期15卷 631-633页

作者：盛亮廖文和南京航空航天大学机电学院南京210016

数控加工仿真是CAD/CAM领域的重要研究内容。目前数控仿真工作主要是几何仿真,几何仿真与真正的实际数控加工还有差距。鉴于几何仿真技术的发展和完善,提出数控加工物理仿真,从而将数控加工仿真技术的研究推进一步,并提出物理仿真具有... 详细信息

数控加工仿真是CAD/CAM领域的重要研究内容。目前数控仿真工作主要是几何仿真,几何仿真与真正的实际数控加工还有差距。鉴于几何仿真技术的发展和完善,提出数控加工物理仿真,从而将数控加工仿真技术的研究推进一步,并提出物理仿真具有的功能,即有视觉、听觉、触觉;物理仿真的实现,即建立机床、刀具、夹具、材料、粗糙度和精度、随机性事件的模型库,以力学分析实现力学仿真;指出了物理仿真的难点,进行了物理仿真的展望。

关键词：物理仿真 CAD/CAM 数控加工模型库

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神经驾驶员·车·路闭环转向控制系统的研究

西华大学学报（自然科学版） 2002年第Z1期21卷 23-25页

作者：梁涛廖文俊四川工业学院汽车与交通工程系四川成都610039

本文作者介绍了一种基于神经网络的汽车智能控制系统———神经驾驶员·车·路闭环转向控制系统的基本工作原理、硬件环境以及相关实验结果。

关键词：汽车神经网络神经驾驶员·车·路转向控制系统

Based on non-targeted metabolomics for differential components screening of Rosae Chinensis Flos and Rosae Rugosae Flos and their quality evaluation

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Traditional Medicine Research 2025年第2期10卷 1-15页

作者： Xu liang Ni-Hui Zhang Zhi-Lai Zhan Guang-Lu Chang Yan Gao Xia Li wen-Yuan Gao School of Pharmaceutical Science and Technology Faculty of MedicineTianjin UniversityTianjin 300193China State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs China Academy of Chinese Medical SciencesBeijing 100700China Key Laboratory of Modern Chinese Medicine Resources Research Enterprises Tianjin 300402China

Background:Rosa chinensis *** Rosa rugosa *** not only of ornamental value,but also edible flowers and the flower buds have been listed in the Chinese Pharmacopoeia as traditional *** two plants have some differences in efficacy,but the flower buds are easily confused for similar *** addition,large-scale cultivation of ornamental rose flowers may lead to a decrease in the effective components of medicinal ***,it is necessary to study the chemical composition and make quality evaluation of Rosae Chinensis Flos(Yueji)and Rosae Rugosae Flos(Meigui).Methods:In this study,40 batches of samples including Meigui and Yueji from different regions in China were collected to establish high-performance liquid chromatography ***,the fingerprints data was analyzed using principal component analysis,hierarchical cluster analysis,and partial least squares discriminant analysis analysis chemometrics to obtain information on intergroup differences,and non-targeted metabolomic techniques were applied to identify and compare chemical compositions of samples which were chosen from groups with large *** compounds were screened by orthogonal partial least-squares discriminant analysis and S-plot,and finally multi-component quantification was performed to comprehensively evaluate the quality of Yueji and ***:The similarity between the fingerprints of 40 batches roses and the reference print R was 0.73 to 0.93,indicating that there were similarities and differences between the *** principal component analysis and hierarchical cluster analysis of fingerprints data,the samples from different origins and varieties were intuitively divided into four *** least-squares discriminant analysis analysis showed that Meigui and Yueji cluster into two categories and the model was reliable.A total of 89 compounds were identified by high resolution mass spectrometry,mainly were flavonoids and flavon

关键词： Rosa chinensis Jacq. Rosa rugosa Thunb. metabolomics chemometrics multiple component quantification quality evaluation

The exposure risks associated with pathogens and antibiotic resistance genes in bioaerosol from municipal landfill and surrounding area

维普期刊数据库评论

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维普期刊数据库

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Journal of Environmental Sciences 2023年第7期129卷 90-103页

作者： Zhishu liang Yun Yu Xiaolong Wang wen liao Guiying Li Taicheng An Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and HealthInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control Guangdong Key Laboratory of Environmental Catalysis and Health Risk ControlSchool of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China

Pathogenic microbes with antibiotic resistance can thrive on municipal solid waste as nutrients and be aerosolized and transported to vicinities during waste disposal ***,the characterization of pathogenic bioaerosols and assessment of their exposure risks are ***,particle size,concentration,activity,antibiotic resistance,and pathogenicity of airborne microorganisms were assessed in different sectors of a typical *** showed that active sector in downwind direction has the highest bioaerosol level(1234 CFU/m3),while residential area has the highest activity(14.82 mg/L).Botanical deodorizer from mist cannon can effectively remove *** bioaerosols can be inhaled into respiratory system till bronchi with sizes ranging from 2.1−3.3 and 3.3−4.7μ*** bacteria(Bacilli,Bacillus,and Burkholderia-Paraburkholderia)and allergenic fungi(Aspergillus,Cladosporium,and Curvularia)prevailed in *** high abundance of microbial volatile organic compounds(mVOCs)producing bioaerosols were detected,these mVOCs contributed little to odor issues in ***,surrounding areas have higher levels of antibiotic-resistance genes(ARGs)than inner landfill with tetC,acrB,acrF,mdtF,and bacA as dominant *** ARGs were significantly correlated with bacterial community,while environmental parameters mainly influenced fungal *** findings can assist in reducing and preventing respiratory allergy or infection risks in occupational environments relating to waste management.

关键词： Bioaerosol Pathogenic community mVOCs Antibiotic-resistance genes Health risk Botanical deodorizer

Impact of agricultural intensification on soil organic carbon＂ A study using DNDC in Huantai County, Shandong Province, China

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Journal of Integrative Agriculture 2016年第6期15卷 1364-1375页

作者： liao Yan WU wen-liang MENG Fan-qiao LI Hu College of Resources and Environmental Sciences China Agricultural University/Beijing Key Laboratory of Biodiversity and Organic Farming Beijing 100193 P.R. China Chinese Academy of Agricultural Engineering Beijing 100125 P.R. China Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences Beijing 100081 P.R.China

Using the biogeochemical model den itrification/decomposition （DN DC）, the dynamic changes of soil organic carbon （SOC） of farmland from the 1980s to 2030s were investigated in Huantai County, a typical intensive agricultural region in the Huang- Huai-Hai Plain of China. Prior to modelling, validation of the DNDC model against field data sets of SOC from Quzhou Experimental Station in the Huang-Huai-Hai Plain was conducted at the site scale. We compared the simulated results with the observed SOC in Huantai County during 1982-2011 under two different classification methods of simulation unit （the first method integrated soil type and land use of Huantai County to form the overlapped modeling units; the second selected the 11 administrative towns as the modeling units）, and achieved a high accuracy in the model simulation with the improvement of the model parameters. Regional SOC （0-20 cm） density and stocks for Huantai County in the years 2012-2031 were predicted under different scenarios of farming management. Compared with current management practices, optimized fertilization （20% decrease of mineral N）, crop straw incorporation （90%） and appropriate animal manure input （40 kg N ha-1 yr-1） could achieve the highest level of SOC density （56.8% higher than 2011） in the period of 2012-2031. The research highlighted the importance of crop straw incorporation, optimized N fertilization and integration of crop production with ani- mal husbandry on the farmland carbon sequestration for maintaining a high land productivity in the Huang-Huai-Hai Plain.

关键词： agricultural intensification soil organic carbon DNDC nitrogen fertilizer straw incorporation animal manure

Dynamic responses of a sediment-filled valley with a fluid layer subject to incident waves

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Earthquake Engineering and Engineering Vibration 2011年第2期10卷 175-185页

作者： wen-I liao Taipei University of Technology (NTUT)

The diffraction of elastic waves by a sedimentary valley in a homogeneous elastic half-space is studied in this paper. The sediment-filled valley is composed of a fluid layer over a soft soil deposit whose characteristics may be significant and should be carefully considered when designing long span bridges with high piers. The method of analysis adopted in the paper is to decompose the problem into an interior region and an exterior region. In the exterior region, the scattered wave fields are constructed with the linear combinations of two independent sets of Lamb＇s singular solutions, i.e., the integral solutions for two concentrated surface loads in two directions; and their derivatives are used to represent the scattered wave fields. A technique is proposed to calculate the integrals in the wave-number domain based on the method of steepest descent. For the interior region, the wave fields for the fluid layer and soft soil deposit are expressed in terms of wave functions which satisfy the equation of motion. The continuity condition at the interface of the media is satisfied in the least square sense. The effects of geometric topography, soil amplification and fluid layer subject to different types of incident harmonic plane waves are analyzed and discussed..

关键词： sedimentary valley scattered wave least square

Microstructure evolution and diffusion mechanism of Nb/TiAl alloy diffusion-bonded joints

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Rare Metals 2023年第5期42卷 1686-1694页

作者： Kun Huang Hong-liang Sun Ze-wen Huang Mo-Yu liao Yang Li School of Materials Science and Engineering Southwest Jiaotong UniversityChengdu610031China Key Laboratory of Advanced Technologies of Materials Ministry of EducationChengdu610031China

The interdiffusion behavior in Nb/TiAl alloy diffusion couples was *** process was carried out in the temperature range of 950-1400℃for 8 h in the vacuum hot-pressure sintering *** microstructural evolution was observed by optical microscopy(OM),electron backscattered diffraction(EBSD),X-ray diffraction(XRD)technique and transmission electron microscopy(TEM).The element concentration distribution at the bonded interface was obtained by scanning electron microscopy with an energy-dispersive X-ray spectroscopy(EDS)*** thickness of reaction interface increases with bonding temperature *** formed phases in diffusion interface are found to be O-Ti_(2)AlNb,σ-Nb_(2)Al,δ-Nb_(3)Al and Nb solid solution(Nbss)at 1350℃.The average interdiffusion coefficient of the interface elements was calculated by the theory of *** results indicate that Al diffuses faster than Nb and Nb diffuses faster than Ti in the Ti-Al-Nb ***,it is found that Ti promotes the diffusion of Al and Nb and Nb inhibits the diffusion of Ti and Al in the process of diffusion.

关键词： Diffusion bonding TiAl alloys Nb Interface microstructure Interdiffusion coefficient