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Retrieval of Land-surface Temperature from AMSR2 Data Using a Deep Dynamic Learning Neural Network

Chinese Geographical Science 2018年第1期28卷 1-11页

作者： mao Kebiao ZUO Zhiyuan SHEN Xinyi XU Tongren GAO Chunyu LIU guang National Hulunber Grassland Ecosystem Observation and Research Station Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences State Key Laboratory of Remote Sensing Science Institute of Remote sensing and Digital Earth Research Chinese Academy of Science and Beijing Normal University College of Resources and Environments Hunan Agricultural University Hydrometeorology and Remote Sensing Laboratory University of Oklahoma

It is more difficult to retrieve land surface temperature(LST) from passive microwave remote sensing data than from thermal remote sensing data, because the emissivities in the passive microwave band can change more easily than those in the thermal infrared band. Thus, it is very difficult to build a stable relationship. Passive microwave band emissivities are greatly influenced by the soil moisture, which varies with time. This makes it difficult to develop a general physical algorithm. This paper proposes a method to utilize multiple-satellite, sensors and resolution coupled with a deep dynamic learning neural network to retrieve the land surface temperature from images acquired by the Advanced Microwave Scanning Radiometer 2(AMSR2), a sensor that is similar to the Advanced Microwave Scanning Radiometer Earth Observing System(AMSR-E). The AMSR-E and MODIS sensors are located aboard the Aqua satellite. The MODIS LST product is used as the ground truth data to overcome the difficulties in obtaining large scale land surface temperature data. The mean and standard deviation of the retrieval error are approximately 1.4° and 1.9° when five frequencies(ten channels, 10.7, 18.7, 23.8, 36.5, 89 V/H GHz) are used. This method can effectively eliminate the influences of the soil moisture, roughness, atmosphere and various other factors. An analysis of the application of this method to the retrieval of land surface temperature from AMSR2 data indicates that the method is feasible. The accuracy is approximately 1.8° through a comparison between the retrieval results with ground measurement data from meteorological stations.

关键词： radiometry Advanced Microwave Scanning Radiometer 2 (AMSR2) passive remote sensing inverse problem

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Statistical Properties of a Blazar Sample and Comparison of HBLs, LBLs and FSRQs

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Chinese Journal of Astronomy and Astrophysics 2005年第5期5卷 471-486页

作者： Li-Sheng mao guang-Zhong Xie Jin-Ming Bai Hong-Tao Liu Yunnan Observatory National Astronomical Observatories Chinese Academy of SciencesKunming 650011 Graduate University of Chinese Academy of Sciences Beijing 100049 Yunnan Astrophysics Center Yunnan University Kunming 650091

Making use of the 2MASS Data Release, we have searched for nearinfrared （JHK） counterparts to 268 blazars from Donato et al. and obtained 238 counterparts within 5＇＇ in the area covered by 2MASS. It provides us a sample with infrared data several times larger than the previous one of the same kind. Based on our sample and the sample by Donato et al., we have compared in detail the properties of HBLs, LBLs and FSRQs from five aspects and found that HBLs are significantly different from LBLs and FSRQs while LBLs are not obviously different from FSRQs. Our results strongly support the division of BL Lac objects into the high-frequency peaked （HBL） and low-frequency peaked （LBL） objects introduced by Padovani ＆ Giommi and show that HBLs and LBLs are two kinds of blazar having different physical properties.

关键词： BL Lacertae objects: general-infrared: galaxies - methods: statistical

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Study on Technologies for Information Monitoring and Quick Response of Agricultural Focuses and Significant Events

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Agricultural Sciences in China 2010年第5期9卷 764-770页

作者： ZHAO Rui-xue KOU Yuan-tao XIAN Guo-jian mao guang-wei Agricultural Information Institute Chinese Acedemy of Agricultural Sciences Beijing 100081 P.R.China

This article analyzed the importance of information monitoring and quick response on agricultural focuses and significant events, proposed the workflow and technical framework for information monitoring and quick response based on modern information technologies, and explained key technologies during implementation and the functional structure for prototype system of the technical support platform.

关键词： agricultural focus significant event information monitoring quick response technical platform

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Evaluation of microRNA expression profiles in human sperm frozen using permeable cryoprotectant-free droplet vitrification and conventional methods

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Asian Journal of Andrology 2024年第4期26卷 366-376页

作者： Li-Xin Zhang Jing mao Yan-Dong Zhou guang-Yao mao Run-Fa Guo Hong-Shan Ge Xia Chen Department of Histology and Embryology Medical SchoolNantong UniversityNantong 226001China Department of Reproductive Medicine The Affiliated Taizhou People’s Hospital of Nanjing Medical UniversityTaizhou School of Clinical MedicineNanjing Medical UniversityTaizhou 225300China.

For sperm cryopreservation,the conventional method,which requires glycerol,has been used for a long *** addition,the permeable cryoprotectant-free vitrification method has been continuously *** the differences of cryopreservation effects between the two methods have being studied,differences in microRNA(miRNA)profiles between them remain *** this study,we investigated the differences in miRNA expression profiles among conventional freezing sperm,droplet vitrification freezing sperm and fresh human *** also analyzed the differences between these methods in terms of differentially expressed miRNAs(DEmiRs)related to early embryonic development and paternal *** results showed no significant differences between the cryopreservation methods in terms of sperm motility ratio,plasma membrane integrity,DNA integrity,mitochondrial membrane potential,acrosome integrity,and ultrastructural ***,sperm miRNA-sequencing showed differences between the two methods in terms of the numbers of DEmiRs(28 and 19 with vitrification using a nonpermeable cryoprotectant and the conventional method,respectively)in postthaw and fresh sperm *** related to early embryonic development and paternal epigenetics mainly included common DEmiRs between the *** results showed that the differences between conventional freezing and droplet vitrification were minimal in terms of miRNA expression related to embryonic development and *** in sperm miRNA expression due to freezing are not always detrimental to embryonic *** study compared differences in miRNA expression profiles before and after cryopreservation between cryopreservation by conventional and vitrification *** offers a new perspective to evaluate various methods of sperm cryopreservation.

关键词： cryopreservation cryoprotectant-free vitrification early embryonic development paternal epigenetic inheritance sperm miRNAs sucrose

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Local hydraulic jump effects on sediment deposition in open-channel flume experiments

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Journal of Hydrodynamics 2023年第2期35卷 268-277页

作者： Shi-hao Fu mao-lin Zhou Wei-lin Xu Wang-ru Wei Guo-guang Wang State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan UniversityChengdu610065China

When a river channel is narrow,bifurcated,or intersected,or when extreme weather or geological disasters cause shed rock masses to occupy a river flood channel,local hydraulic jumps may develop in the *** disasters such as landslides,floods,and debris flows occur upstream,will result in large transport rate of large-sized gravel *** particles may be blocked in hydraulic jump areas,causing river channel water depth to *** this study,the effect of local hydraulic jumps on the sediment deposition rate was investigated in flume *** ratio of upstream and downstream Froude numbers,particle size,Sediment supply intensity,and flow discharge all affected the sediment deposition *** increases in the ratio of upstream and downstream Froude numbers,particle size,and sediment supply intensity,the sediment deposition rate *** sediment deposition rate decreased with an increase in flow *** hydraulic conditions and particle properties jointly determined the sediment deposition rate in a hydraulic jump section,and an empirical formula was developed using those parameters to calculate the sediment deposition ***,to identify risks and prevent disasters in mountain rivers,local changes in hydraulic conditions and particle properties need to be jointly evaluated.

关键词： Hydraulic jump sediment deposition particle size upstream/downstream Froude numbers ratio sediment supply intensity flowdischarge

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Intervention effect of encouraging mental and programmed nursing of patients in interventional operating room on their compliance and bad moods

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World Journal of Clinical Cases 2022年第21期10卷 7285-7292页

作者： Rong-Bing Chi Yuan-Yuan cai Hui-Ping mao Interventional Treatment Room Taizhou First People’s HospitalTaizhou 318020Zhejiang ProvinceChina Department of Cardiovascular Taizhou First People’s HospitalTaizhou 318020Zhejiang ProvinceChina Nursing Department Taizhou First People’s HospitalTaizhou 318020Zhejiang ProvinceChina

BACKGROUND Patients’lack of correct understanding of cardiovascular disease and interventional therapy is often accompanied by varying degrees of fear,depression and *** emotion will affect the hemodynamic fluctuation of patients undergoing interventional surgery,which is not conducive to the smooth and safe operation of interventional ***,it is very important to implement effective nursing intervention in the operating *** To explore the intervention effect of motivational psychological nursing combined with programmed nursing on compliance and bad mood of patients in interventional operating *** A total of 98 patients in the interventional operating room of our hospital from October 2019 to March 2021 were randomly divided into study group(n=49)and control group(n=49).The control group took routine ***,the study group took motivational psychological nursing combined with procedural nursing on the basis of the control *** were made on rehabilitation compliance,Positive and Negative Affect Schedule of bad mood,Simplified Coping Styles Questionnaire score of coping style and satisfaction of intervention between the two groups before and after *** The rehabilitation compliance of the study group(95.92%)was higher than that of the control group(81.63%)(P<0.05).After intervention,the scores of upset,fear,irritability,tension and fear in the study group were respectively,which were lower than those in the control group(P<0.05).After intervention,the score of positive coping in the study group was higher than that in the control ***,the score of negative coping in the study group was lower than that in the control group(P<0.05).The intervention satisfaction of the study group(93.88%)was higher than that of the control group(79.59%)(P<0.05).CONCLUSION The intervention of motivational psychological nursing combined with procedural nursing can improve the rehabilitation compliance,an

关键词： Interventional operating room Motivational psychological nursing Programmed nursing Compliance Bad mood

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A Computational Study on Water-assisted Ammonolysis of N-Methyl β-Sultam

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Chemical Research in Chinese Universities 2006年第1期22卷 94-98页

作者： HE mao-xia FENG Da-cheng YU Ling-juan cai Zheng-ting Institute of Theoretical Chemistry Shandong University Jinan 250100 P. R. China

The ring opening of β-sultam v/a an H2O-assisted ammonolysis process was studied by using Density Functional Theory（DFT） method at the B3LYP/6-31G level as a further step in the theoretical investigation of the ammonolysis reaction of β-sultams. The calculated pathways are analogous to those previously described for the non-assisted ammonolysis reaction. Solvent effects were assessed by using the polarized continuum model（PCM） method. The results show that mode 1 and pathway a in channel Ⅱ are the most favorable ones in both the cases. The energy barrier of the cleavage of C-S bonds producing P1 is the highest among all the energy barriers. The presence of a solvent in the continuum model disfavors the reaction, whereas the participation of water in the ammonolysis reaction plays a positive role and reduces the active energy greatly. The relative energies of all the transition states in the assisted ammonolysis are 20-80 kJ/mol lower than those for the non-assisted reaction.

关键词： Ammonolysis Water-assisted mechanism Density Functional Theory(DFT) β-Sultam

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SYNTHESIS AND PROPERTIES OF BIFUNCTIONAL MAGNETIC-OPTICAL NANOMATERIALS:Fe_2O_3@PDMAEMA-CAPPED Ⅱ－Ⅵ SEMICONDUCTOR QUANTUM DOTS NANOCOMPOSITES

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Chinese Journal of Polymer Science 2013年第9期31卷 1233-1241页

作者： Na-na Zhao Wei Nie Jun mao Wei-cai Wang Xiang-ling Ji State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences

A facile route to synthesize a new type of multifunctional nanocomposites is reported. Here, PDMAEMA （poly[2- （dimethylamino）ethyl] methacrylate） is a key macromolecule serving as a bridge between magnetic FeaO3 nanoparticles and luminescent quantum dots. Both Fe203 nanoparticles and II-VI semiconductor quantum dots with a narrow size distribution are synthesized through a two-phase thermal approach. Subsequently, the atom transfer radical polymerization （ATRP） technique was applied to prepare magnetic Fe203@PDMAEMA core-shell nanoparticles. The thickness of PDMAEMA shell can be easily controlled by adjusting the reaction time. Finally, the ligand exchange method was exploited to modify II-VI quantum dot with amine-containing polymer of PDMAEMA, which led to quantum dot securely bound by Fe203@PDMAEMA core-shell nanoparticle to form a multifunctional nanocomposite. The resulting nanocomposite remains variable emission by tuning the II-VI semiconductor type and particle size and shows/arc at 49 kA/m and Tb at 16 K from Fe2O3 nanoparticles. The self-assembled behavior for the resulting samples is also discussed.

关键词： Bifunctional nanocomposite Magnetic-optical PDMAEMA Semiconductor ATRP Two-phase method.

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PtAu bimetallic nanocatalyst for selective hydrogenation of alkenes over aryl halides

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Nano Research 2019年第7期12卷 1659-1662页

作者： Le Guo Junjie mao Shuangxi Guo Qi Zhang Shuangfei cai Wei He School of Pharmaceutical Sciences Tsinghua UniversityBeijing 100084China CAS Key Lab for Biomedical Effects of Nanomaterials and Nanosafety Center of Materials Science and Optoelectronics EngineeringCAS center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyUniversity of Chinese Academy of SciencesBeijing 100190China Center of Single-Atom Clusters and Nanomaterials (CAN)Key Laboratory of Functional Molecular SolidsMinistry of EducationAnhui Key Laboratory of Molecule-Based MaterialsCollege of Chemistry and Materials ScienceAnhui Normal UniversityWuhu 241002China

Herein,we present a new strategy that for the first time achieved chemo- and enantio-selective hydrogenation of alkenes over *** to the success is that instead of using external poisons,we use the composition of the bimetallic nanocrystal catalysts to control chemoselectivity (hydrogenation of C=C bonds without cleavage of Ar-X bonds).We further show that this system combined with surface modifying chiral ligands can control the ***,after synthesizing and screening a series of easily accessible MxAuy (M = Pd,Pt;x,y= 1,3,5) bimetallic nanocrystals (9-10 nm) supported on activated carbon,we identified that PtiAui/C is a recyclable and generally applicable catalyst for the chemoselective hydrogenation of alkenes without cleaving aryl halogen ***,cinchonidine modified Pt,Aui/C is shown to be capable of enantioselective hydrogenation,as illustrated by the rapid and enantio-enriched synthesis of RIP1 inhibitor analogue 7-Br-O-Necl.

关键词： hydrogenation chemoselectivity enantioselectivity PtAu bimetallic

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Effects of Mo and Mn on Pitting Behavior of Duplex Stainless Steel

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Journal of Iron and Steel Research International 2016年第12期23卷 1333-1341页

作者： Li-cong AN Jing CAO Lin-cai WU Hong-huan mao Yi-tao YANG School of Materials Science and Engineering Shanghai University

Effects of Mo and Mn elements on pitting corrosion resistance of lean duplex stainless steel in C1- media solution have been studied. Gravimetric tests in 6 mass% FeCl3 at 35 ℃ and potentiodynamic analysis in 3.5 mass% NaCI were carried out. The corrosion potential （Ecoor） and the pitting potential （Epit） are shifted to a more noble po tential because of the presence of Mo around the pits. While the presence of Mn could sharply reduce the value of pitting resistance equivalent number （PREn） and the pits can be formed more easily. The pits are found generating at the phase with a lower PREn. The identical tendencies between the Epit and PREn of weaker phase are the same. A corrosion mechanism has been proposed to determinate pitting corrosion behavior based on microstructural observations.

关键词： duplex stainless steel alloying element pitting corrosion pitting resistance equivalent number corrosion mechanism

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