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The breeding biology of endemic Spectacled Parrotbill(Sinosuthora conspicillatus) in Lianhuashan National Nature Reserve, Gansu Province, China

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Avian Research 2018年第1期9卷 43-48页

作者： Lijun Chen Lei Zhu Yunbiao Hu Pengfei Liu nan lyu Yuehua Sun Key Laboratory of Animal Ecology and Conservation Biology Institute of Zoology Chinese Academy of Sciences Beijing 100101 China State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of Zoology Chinese Academy of Sciences Beijing 100101 China Chengdu Bird Watching Society Chengdu 610041 China

Background: Life history traits play critical roles in population survival and *** information should be particularly detailed in order to provide significant insights into the population status and the evolution of other *** our knowledge, there is still no information about the breeding biology of Spectacled Parrotbill(Sinosuthora conspicillatus), an endemic parrotbill in ***: We searched the nests, checked all nests found and recorded the information of eggs, nestlings and nest sites of the Spectacled Parrotbill from 2013 to 2015 at Lianhuashan National Nature Reserve in Gansu Province, ***: A total of 16 nests were *** trees were artificial young spruces and *** nest height was 0.89 ± 0.47 m(n = 16) above the ground *** nests were cup-shaped and constructed using leaves, fine strips of barks and grasses by both *** mean clutch size was 4.42 ± 0.79(n = 12).The eggs were oval in pale blue without speckles, and the mean egg mass was 1.25 ± 0.07 g(n = 27).The egg length was 15.56 ± 0.46 mm(n = 27) and the width was 12.46 ± 0.29 mm(n = 27).Incubation period was 13 days and nestling period was 13–14 *** breeding success rate was 46%, and among those failed nest, 71% were depredated and 29% were ***: Detailed life history information about parrotbill is still *** breeding biology of Spectacled Parrotbill reported in the present study should be helpful for further research about population, breeding behavior and conservation of this bird.

关键词： Reproduction Paradoxornithidae Nest description Brood size Egg size Nest survival

Strain-induced modulation of magnetic anisotropy in Co/BaTiO_3 composite

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Chinese Science Bulletin 2014年第36期59卷 5191-5193页

作者： Li Shu ya Gao Cewen nan School of Materials Science and Engineering State Key Laboratory of New Ceramics and Fine Processing Tsinghua University

A uniaxial magnetic anisotropy Co film was grown on a single-crystal Ba Ti O3(BTO) substrate. The strain yielded by the voltage-induced ferroelastic domain switching in the BTO substrate was recorded by atomic force microscope and modulated the magnetism of the Co film. The manipulation of the magnetism of the Co film is experimentally demonstrated by voltage dependence of magnetic hysteresis loops measured via magneto-optic Kerr effect.

关键词：磁各向异性应变诱导调制钛酸钡电压依赖性复合原子力显微镜磁光克尔效应

Deep learning for processing and analysis of remote sensing big data:a technical review

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Big Earth Data 2022年第4期6卷 527-560页

作者： Xin Zhang ya’nan Zhou Jiancheng Luo State Key Laboratory of Remote Sensing Science Aerospace Information Research InstituteChinese Academy of SciencesBeijingChina College of Hydrology and Water Resources Hohai UniversityNanjingChina

In recent years,the rapid development of Earth observation tech-nology has produced an increasing growth in remote sensing big data,posing serious challenges for effective and efficient proces-sing and ***,there has been a massive rise in deeplearningbased algorithms for remote sensing tasks,providing a large opportunity for remote sensing big *** this article,we initially summarize the features of remote sensing big ***,following the pipeline of remote sensing tasks,a detailed and technical review is conducted to discuss how deep learning has been applied to the processing and analysis of remote sensing data,including geometric and radiometric processing,cloud masking,data fusion,object detection and extraction,landuse/cover classification,change detection and multitemporal ***,we discussed technical challenges and concluded directions for future research in deep-learning-based applications for remote sensing big data.

关键词： Remote sensing big data deep learning technical review

Regulatory effects of Poria on substance and energy metabolism in cold-deficiency syndrome compared with heat-deficiency syndrome in rats

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Chinese Journal of Natural Medicines 2018年第12期16卷 936-945页

作者： HAN Xue-Ying WANG ya-nan DOU De-Qiang College of Pharmacy Liaoning University of Traditional Chinese Medicine

Recent studies have revealed that the property of drug is mainly associated with the body's substance and energy metabolism. The present study aimed to evaluate the drug property of Poria, called Fuling(FL) in traditional Chinese medicine(TCM), in terms of its effects on the substance and energy metabolism in rat models of cold-deficiency and heat-deficiency syndromes, compared with Aconiti Lateralis Radix Praeparaia, called Fuzi(FZ) in TCM, with hot property, and Anemarrhenae Rhizoma, called Zhimu(ZM) in TCM, with cold property, as reference drugs, respectively. The appearance score, toe and rectal temperatures of the animals treated were assessed at different time points. Several indices in vivo correlated with substance and energy metabolism(glucokinas, phosphoglycerate kinase, cytochrome c reductase, cytochrome c oxydase, and Na^+-K^+-ATPase), endocrine system(triiodothyronine, thyroxine, and 17-hydroxycorticosteroid), nervous system(acetylcholin esterase), and cyclic nucleotide system were determined. The changes in appearance score and indices in vivo suggested the successful establishment of cold-deficiency and heat-deficiency syndrome models. FZ reversed the decreased levels of indices(substance and energy metabolism and endocrine system) and alleviated the syndrome of cold-deficiency model, and ZM showed obviously therapeutic effect on heat-deficiency syndrome(appearance score, substance and energy metabolism, and endocrine system). FL could alleviate cold-deficiency syndrome and raise the decreased levels of glucokinas, phosphoglycerate kinase, cytochrome c reductase and triiodothyronine in cold-deficiency model, but had no significant effect on heat-deficiency syndrome. Drug property of FL was inferred as trending to "flat and warm", which still need further study. It was advisable to adopt both cold-deficiency and heat-deficiency models to study the drugs with "flat" property.

关键词： Poria Substance metabolism Energy metabolism Cold-deficiency syndrome Heat-deficiency syndrome

On Tubular Tilting Objects in the Stable Category of Vector Bundles

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Acta Mathematica Sinica,English Series 2019年第4期35卷 494-512页

作者： Jian Min CHEN ya nan LIN Shi Quan RUAN School of Mathematical Sciences Xiamen University

The present paper focuses on the study of the stable category of vector bundles for the weighted projective lines of weight triple. We find some important triangles in this category and use them to construct tilting o... 详细信息

关键词： Tilting sheaf weighted projective line stable category cluster category tubular algebra

Dynamics and measurement of cavitation bubble

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Science China(Physics,Mechanics & Astronomy) 2006年第4期49卷 385-395页

作者： CHEN Weizhong LIU ya'nan HUANG Wei GAO Xianxian Key Laboratory of Modern Acoustics and Institute of Acoustics Nanjing University Nanjing 210093 China Key Laboratory of Modern Acoustics and Institute of Acoustics Nanjing University Nanjing 210093 China Key Laboratory of Modern Acoustics and Institute of Acoustics Nanjing University Nanjing 210093 China Key Laboratory of Modern Acoustics and Institute of Acoustics Nanjing University Nanjing 210093 China

Based on the introduction of international progress, our investigations on acoustic cavitation have been reported. Firstly we considered the cavity's dynamics under the drive of the asymmetrical acoustic pressure. An aspheric dynamical model was proposed and a new stable and aspheric solution was found in numerical simulation of the theoretical framework of the aspheric model. Then, a dual Mie-scattering technique was developed to measure the cavity's aspheric pulsation. A significant asynchronous pulsation signal between two Mie-scattering channels was caught in the case of large cavity driven by low acoustic pressure. As a direct deduction, we observed an evidence of cavity's aspheric pulsation. Furthermore, we studied the dependency of the asynchronous pulsation signal on the various parameters, such as the amplitude and frequency of the driving acoustic pressure, and the surface tension, viscosity and gas concentration of the liquid. Finally, we introduced a new numeric imaging technique to measure the shapes of the periodic pulsation cavities. The time-resolution was in the order of 20 ns, one order of magnitude lower than that in the previous work, say, 200 ns.

关键词： cavitation, dynamics of cavitation bubble, sonoluminescence.

Hot Ductility of Ti-V Bearing Microalloyed Steel in Continuous Casting

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Journal of Iron and Steel Research International 2014年第4期21卷 451-458页

作者： yan-hui SUN ya-nan ZENG Kai-ke CAI Metallurgical and Ecological Engineering School University of Science and Technology Beijing

Hot ductility of Ti-V bearing steel was studied by theoretical calculation and thermal simulation experi ment. Meanwhile, microsegregation and precipitates were analyzed. The results showed that elements S, Ti and O were enriched at the grain boundaries, while the hot ductility was deteriorated by inclusions of （Fe, Mn, Si, Al）（S, O） in the interdendritic region. At tbe temperature of 1 100℃, large TiN particles had little effect on hot ductility. In the temperature range from 975 to 925 ℃, reduction of area （R. A） declined rapidly from 81. 88% to 63.16% with the size of particles decreasing from 40 to 20 nm and quantity increasing from 1.4 to 11.9 μm 2, respectively. In the temperature range from 875 to 825℃, R. A reduced unobviously from 35.14% to 28.6% with ferric films thickening gradually. The critical stress, 88.79 MPa, was equal to tensile strength at 825℃. Intergranular fracture was easy to occur with higher critical stress below 825℃.

关键词： hot ductility microalloyed steel solute segregation precipitate critical stress

Double Elliptic Equation Expansion Approach and Novel Solutions of (2+1)-Dimensional Break Soliton Equation

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Communications in Theoretical Physics 2008年第2期49卷 281-286页

作者： SUN Wei-Kun CAO nan-Bin SHEN ya-Liang Department of Mathematics and Physics Tianjin University of Technology and Education Tianjin 300222 China School of Science Shijiazhuang University of Economics Shijiazhuang 050031 China Key Laboratory of Mathematics Mechanization Academy of Mathematics and System Sciences the Chinese Academy of Sciences Beijing 100080 China School of Science Natong University Nantong 226019 China

In this paper, by means of double elliptic equation expansion approach, the novel double nonlinear wave solutions of the （2＋1）-dimensional break soliton equation are obtained. These double nonlinear wave solutions contain the double Jacobi elliptic function-like solutions, the double solitary wave-like solutions, and so on. The method is also powerful to some other nonlinear wave equations in （2＋1） dimensions.

关键词： break soliton equation symbolic computation double elliptic equations double soliton-like solution nonlinear wave solution

Preparation of Titanium-silphenylene-siloxane Hybrid Polymers with High Refractive Index,Transmittance,and Thermal Stability

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Chinese Journal of Polymer Science 2020年第9期38卷 973-982,I0007页

作者： Dong Zhao Shu-Xi Shan Meng Zhang Xiao-A Zhang Sheng-Ling Jiang ya-Fei lyu Key Laboratory of Carbon Fiber and Functional Polymers of Ministry of Education College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China

Vinyl-containingtitanium-silphenylene-sioxane oligomers(O1,O2,O3,andO4)withdifferent molar ratios of titanium to silicon were successfully synthesized in high yields by nonhydrolytic sol-gel reaction,and the obtained four oligomers were further crosslinked with methylphenyl hydro-silicone oil(4)to form corresponding polymers(P1,P2,P3,and P4)by hydrosilylation *** structures were characterized with spectroscopic characterization techniques including FTIR,1H-NMR,and Raman *** effect of titanium element on crosslinking behavior,thermal resistance,refractive index,transparency,thermal aging stability,glass transition temperature,and surface properties of the polymers were *** with titanium-free polymer P1,the thermal resistance,refractive index,and thermal aging stability of titanium-silphenylene-siloxane polymers(P2,P3,and P4)were significantly *** titanium-silphenylene-siloxane polymers achieved a high refractive index(n=1.580-1.584)and thermostability(Tsd>500℃).In thermal aging,the polymers exhibited superior performances with high optical transparency(~90%at 450 nm)and exhibited high thermal stability(~84%at 450 nm after thermal aging at 150℃for 120 h).These data indicate that the polymers have potential application in optical materials such as LED encapsulants.

关键词： Titanium-silphenylene-siloxane hybrid polymers High refractive index and transmittance Thermal stability