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Journal of Rare Earths 2022年第3期40卷 406-414,I0002页

作者： Lingna Xu hongyan zheng Tao Pang Junwen Mao College of Science Huzhou UniversityHuzhou 313000China

In this study,the hexagonal NaYF_(4):Yb^(3+)/Ho^(3+)/Ce^(3+) microcrystals were synthesized controllably,and upconversion luminescence excited at 940 nm and its application in temperature-responsive anti-counterfeiting are *** is clarified that the Ln^(3+)(Ln=Y+Yb+Ho+Ce)density ratio of bottom plane to side plane in the unit cell can be regulated by Ce^(3+) *** is also proved that the energy transfer of Yb^(3+) to Ho^(3+) is responsible for the activation of Ho^(3+)under 940 nm excitation,while the cross relaxation between Ho^(3+)and Ce^(3+)participates in the redistribution of electron population of^(5)S_(2)/^(5)F_(4)and^(5)F_(5)*** theory and experiment confirm that the intensity ratio of red to green emission(I_(R)/I_(G))as a function of temperature as an independent variable has good linear characteristics in the temperature range of 300-500 *** to the good responsiveness of multicolor luminescence to temperature,the hexagonal NaYF_(4):Yb^(3+)/Ho^(3+)/Ce^(3+) with tunable morphology is a promising candidate for advanced temperature-responsive upconversion *** results provide a new pathway for the controllable synthesis of hexagonal NaYF_(4)microcrystals as well as the regulation of upconversion luminescence that is excited by wavelengths other than 980 nm and its application in anti-counterfeiting.

关键词： Upconversion luminescence Color regulation Anti-counterfeiting Rare earths

Feature Extraction and Dimensionality Reduction of Arc Sound under Typical Penetration Status in Metal Inert Gas Welding

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Chinese Journal of Mechanical Engineering 2012年第2期25卷 293-298页

作者： LIU Lijun LAN Hu zheng hongyan JIAN Xiaoxia Ningbo Institute of Technology Zhejiang UniversityNingbo 315100China School of Material Science ＆ Engineering Harbin University of Science and TechnologyHarbin 150080China Rongcheng College Harbin University of Science and TechnologyRongcheng 264300China

Arc sound is well known as the potential and available resource for monitoring and controlling of the weld penetration status,which is very important to the welding process quality control,so any attentions have been paid to the relationships between the arc sound and welding *** non-linear mapping models correlating the arc sound to welding parameters have been established with the help of neural ***,the research of utilizing arc sound to monitor and diagnose welding process is still in its infancy.A self-made real-time sensing system is applied to make a study of arc sound under typical penetration status,including partial penetration,unstable penetration,full penetration and excessive penetration,in metal inert-gas（MIG） flat tailored welding with spray *** sound is pretreated by using wavelet de-noising and short-time windowing technologies,and its characteristics,characterizing weld penetration status,of time-domain,frequency-domain,cepstrum-domain and geometric-domain are ***,high-dimensional eigenvector is constructed and feature-level parameters are successfully fused utilizing the concept of primary principal component analysis（PCA）.Ultimately,60-demensional eigenvector is replaced by the synthesis of 8-demensional vector,which achieves compression for feature space and provides technical supports for pattern classification of typical penetration status with the help of arc sound in MIG welding in the future.

关键词： metal inert gas welding penetration arc sound feature extraction dimensionality reduction

Seasonal variations of tris (2-chloroethyl) phosphate and cytotoxicity of organic extracts in water samples from Wuhan, China

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Journal of Environmental Sciences 2019年第2期31卷 299-309页

作者： Youjian Zhang Wenjuan Zhang Jian Hou Xian Wang Wenhong Lu hongyan zheng Wei Xiong Junling Liu Jing Yuan Department of Occupational and Environmental Health Huazhong University of Science and Technology Key Laboratory of Environment and Health Ministry of Education & Ministry of Environmental ProtectionState Key Laboratory of Environmental Health (Incubating)School of Public HealthTongji Medical CollegeHuazhong University of Science and Technology Wuhan Centers for Disease Control and Prevention

Tris(2-chloroethyl) phosphate(TCEP) is a typical phosphate flame retardant. Its potential adverse health effects have recently aroused concern. We investigated the seasonal variations of TCEP concentrations in the raw, finished and tap water samples from two drinking water treatment plants(DWTPs) in China, and evaluated the cytotoxicity and apoptosis/necrosis of organic extracts(OEs) in water samples. We enriched TCEP and OEs in water samples by solid-phase extraction method. The TCEP concentrations in water samples were determined by gas chromatography–mass spectrometry. Normal human liver cell line L02 was treated with OEs in the water samples, and then the cytotoxicity and apoptosis/necrosis were measured by 3-(4, 5-dimethyithiazol-2-yl)-2,5-diphenyl-tetrazolium bromide assay and flow cytometry, respectively. The results showed that cytotoxicities of OEs in raw water samples from both DWTPs in summer and winter were stronger than those in spring and autumn, cytotoxicity of OEs in finished and tap water samples from both DWTPs in summer and autumn were stronger than those in spring and winter. In all seasons, the maximal concentrations(100 mL water/mL cell culture) of OEs in the raw water samples from both DWTPs induced late apoptosis/necrosis. The reasons for seasonal variations of TCEP in water samples and potential toxic effects of other pollutants in the water samples need to be further investigated.

关键词： Tris (2-chloroethyl) phosphate Cytotoxicity Organic extract Apoptosis Necrosis

Cochlear stem cell transplantation for hearing recovery in a rat model of sensorineural hearing loss

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Neural Regeneration Research 2010年第11期5卷 833-837页

作者： hongyan zheng Haoqing Tai Shuilin Zeng Department of Anatomy Nanjing University of Traditional Chinese Medicine Nanjing 210029 Jiangsu Province China Institute of Neurobiology Southeast University Medical School Nanjing 210009 Jiangsu Province China

BACKGROUND： Transplantation of in vitro, cultured, neural stem cells or bone marrow stem cells into the cochlear wall or oval window has been used to observe survival, proliferation, and differentiation of cochlear stem cells, as well as migration of differentiated hair cells in scala tympani over a short period of time. OBJECTIVE： To investigate the relationship between survival, proliferation, differentiation, and migration of transplanted cochlear stem cells and hearing recovery from sensorineural hearing loss. DESIGN, TIME AND SETTING： A randomized, controlled, animal experiment was performed at the Laboratory of Neurobiology, Southeast University in 2009. MATERIALS： Stem cells were isolated from neonatal rats, followed by primary and passaged cultures. METHODS： A total of 30 adult, male rats with normal hearing were treated with gentamicin sulfate to establish models of sensorineural hearing loss. The model rats were randomly assigned to cochlear stem cell transplantation and control groups, which were respectively injected with a 10μL cochlear stem cell suspension （1 × 10^5μL） and phosphate-buffered saline into the scala tympani. MAIN OUTCOME MEASURES： Rat hearing recovery was detected by brainstem auditory-evoked potential at 1, 9, and 15 months following transplantation. The location of stem cells was detected using nestin immunofluorescence, proliferative capacity was detected using bromodeoxyuridine immunofluorescence, and hair cell differentiation was detected using Myosin VIIA immunofluorescence. RESULTS： Cochlear stem cells migrated from the needle track to the spiral organ along the scala tympani following transplantation, and the hair cell-like cells migrated to the basal membrane and organ of Corti. The threshold of brainstem auditory-evoked potential increased with increasing time （P 〈 0.05）. CONCLUSION： Transplanted cochlear stem cells from the internal ear migrated to the basal membrane and reached the injury site. The cells differentiated into ce

关键词： cochlear stem cells transplantation hearing recovery sensorineural hearing loss neural regeneration rats

A study on the characteristics of high-resolution anorectal manometry in patients with functional anorectal pain

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China Medical Abstracts(Internal Medicine) 2024年第3期41卷 173-174页

作者： zheng hongyan Dept Anorect Nanjing CM HospNanjing CM UnivNanjing 210022China

Objective To explore the characteristics of anorectal motility and sensation in patients with functional anorectal pain (FAP) by high-resolution anorectal manometry (HR-ARM).Methods The clinical data of 81 FAP patients (FAP group) who underwent HR-ARM in Nanjing Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine from January 1,2020 to January 31,2022 were retrospectively collected,and 80 healthy volunteers were recruited as healthy control group during the same period.

关键词： patients anorectal sensation

Intercalation of Amido Cationic Drug with Montmorillonite

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Journal of Wuhan University of Technology(Materials Science) 2007年第2期22卷 250-252页

作者：郑俊萍 School of Materials Science and Engineering Tianjin University

The intercalation of drug molecules with montmorillonit （MMT） using Acyclovir （ACV） as the model drug was focused on. The optimum conditions were studied based on orthogonal design, such as intercalation time and temperature. The intercalation composites were characterized by X-ray diffraction （XRD）, Fourier transformed infrared （FT-IR）, and thermogravimetric analysis （TGA）. The experimental results reveal that ACV is successfully intercalated into the interlayers of MMT, The in vitro release experiments reveal that ACV is released from MMT steadily and pH dependent.

关键词： montmorillonite acyclovir intercalation: in vitro release

Design and Implementation of Surface Water Pollution Monitoring Information System in Xinxiang City

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Design and Implementation of Surface Water Pollution Monitor...

The Study and Application of Underground 3D Modeling Based on Yelmand Gold Mining Area

2012年计算机应用与系统建模国际会议

作者： zheng hongyan Lin Qizhong Wang Liming Bai Xuehong Center for Earth Observation and Digital Earth Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences

Information management of surface water pollution is one of the most important aspects of environmental management, which can effectively manage and visualize water pollution monitoring information. Water quality model is key technology of surface water pollution monitoring, which concerns about monitoring precision of pollutant concentration. Taking the design and realization of the surface water pollution monitoring information system in Xinxiang city, Henan province as an example, adopting component GIS technology and taking advantage of the perfect combination of Map Objects and Visual Basic 6.0, the paper discusses how to perform the secondary development by integrating water quality model and GIS. The system not only realized visual expression of surface water pollution situation and prediction of pollutant concentration, but also provided scientific methods and modern means for information management of water pollution in Xinxiang city.

关键词： GIS MapObjects Water quality model Water quality pollution

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The Study and Application of Underground 3D Modeling Based o...

热冲击下冷却温度对花岗岩细观破裂的影响研究

2012年计算机应用与系统建模国际会议

作者： Bai Xuehong Lin Qizhong Wang Liming zheng hongyan Center for Earth Observation and Digital Earth Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences

Because of the exhaustive exploitation of the surface minerals and the shallow ones, people have to explore the minerals in the deeper layers of the earth. However, it seems always uncertain that how much storage of the minerals and where the minerals are distributed in the deep earth. Petrel software combines the strong functions of 3D modeling and numerical simulation together, which can efficiently develop and manage the study area. This paper introduced the main modeling procedure, the stages of modeling of Petrel. Furthermore, Petrel forecasted the distribution and reserves of gold mineral using facies modeling, which provided strong support for the decision of the exploration and development. As an innovation point, this paper explored the technological realization of the transplantation of the 3D model between the Petrel software and the 3DMAX software for the first time, and achieved perfect effect. At last, the Yelmand gold mining case study indicated that Petrel could quickly build tectonic model, stratum model and lithofacies model with the help of the function of stochastic facies modeling algorithm and powerful human-machine interaction in 3D modeling, which was helpful to the recognition and further extraction of the study object.

关键词： Underground 3D modeling Petrel Facies modeling Kriging algorithm 3D model transplantation

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矿业研究与开发 2022年第7期42卷 133-136页

作者：郑红彦山西工商学院建筑工程学院山西太原030024

从细观角度出发,借助高精度显微CT技术,以构建三维空间数字岩芯为基础,对花岗岩加热到相同温度后在相同冷却介质中急剧冷却到不同温度的细观演化过程进行研究,从热冲击后花岗岩的裂隙长度、宽度、和深度上进行具体分析,探究高温热冲击... 详细信息

从细观角度出发,借助高精度显微CT技术,以构建三维空间数字岩芯为基础,对花岗岩加热到相同温度后在相同冷却介质中急剧冷却到不同温度的细观演化过程进行研究,从热冲击后花岗岩的裂隙长度、宽度、和深度上进行具体分析,探究高温热冲击作用下冷却温度对花岗岩细观特性的影响。研究结果表明,花岗岩的热冲击作用随其在水中的冷却温度升高而变化明显。在水中冷却温度为100℃时,花岗岩热破裂最剧烈,说明在花岗岩热冲击破裂过程中,其破裂程度不仅与花岗岩的初始加热温度有关,还与其在水中急剧冷却的温度有关。此外,花岗岩热破裂后产生的孔隙—裂隙网络,会大大降低花岗岩的致密性,进而有助于增大地热开发中的热交换面积,有利于储层改造。

关键词：花岗岩热冲击冷却温度显微CT 细观破裂

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玉米肽抗疲劳作用的实验研究

中国粮油学报 2005年第1期20卷 33-35,48页

作者：郑鸿雁吉林农业大学食品工程学院长春130118

为了开发、利用玉米肽资源、对玉米肽进行了抗疲劳作用研究。进行玉米肽对小鼠游泳时间、小鼠爬杆时间、血乳酸、血中尿素氮、肝糖原含量和肌糖原含量等的影响实验。结果表明,玉米肽能增强小鼠游泳耐力、延长爬杆时间,降低血乳酸、血... 详细信息

为了开发、利用玉米肽资源、对玉米肽进行了抗疲劳作用研究。进行玉米肽对小鼠游泳时间、小鼠爬杆时间、血乳酸、血中尿素氮、肝糖原含量和肌糖原含量等的影响实验。结果表明,玉米肽能增强小鼠游泳耐力、延长爬杆时间,降低血乳酸、血中尿素氮含量,提高肝糖原含量和肌糖原含量。玉米肽具有抗疲劳作用。为玉米肽的开发和应用提供了理论基础和实验依据。

关键词：玉米肽抗疲劳血乳酸尿素氮肝糖原肌糖原