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Social interactivity in pigeon courtship behavior

Current Zoology 2017年第1期63卷 85-95页

作者： Emma l.r. WArE Daniel r. SAUNDErS Nikolaus F, TrOJE Department of Psychology Queen's University Kingston Ontario K7L 3N6 Canada Centre for Neuroscience Studies Queen's University Kingston Ontario K7L 3N6 Canada Wellesley Institute Toronto Ontario M4V 3B Canada Centre for Brain/Mind Sciences University of Trento Trento Italy Department of Biology Queen's University Kingston K7L 3N6 Canada

A closed-loop teleprompter system was used to isolate and manipulate social interactivity in thenatural courtship interactions of pigeons Columbia livia. In Experiment 1, a live face-to-face real-time interaction between 2 courting pigeons （live） was compared to a played back version of thevideo stimulus recorded during the pairs live interaction. We found that pigeons were behavinginteractively; their behavior depended on the relationships between their own signals and those oftheir partner. In Experiment 2, we tested whether social interactivity relies on spatial cues presentin the facing direction of a partner＇s display. By moving the teleprompter camera 90~ away from itsoriginal location, the partner＇s display was manipulated to appear as if it is directed 90~ away fromthe subject. We found no effect of spatial offset on the pigeon＇s behavioral response. In Experiment3, 3 time delays, 1 s, 3s, and 9s, a live condition, and a playback condition were chosen to investi-gate the importance of temporal contiguity in social interactivity. Furthermore, both opposite-sex（courtship） and same-sex （rivalry） pairs were studied to investigate whether social-context affectssocial interactivity sensitivity. Our results showed that pigeon courtship behavior is sensitive totemporal contiguity. Behavior declined in the 9 s and Playback conditions as compared to live con-dition and the shorter time delays. For males only, courtship behavior also increased in the 3-sdelay condition. The effect of social interactivity and time delay was not observed in rivalry inter-actions, suggesting that social interactivity may be specific to courtship.

关键词： courtship behavior, pigeons, social interactivity, spatial offset, time delay, video playback.

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luminescence investigation of Dy2O2S and Dy2O2SO4 obtained by thermal decomposition of sulfate hydrate

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Journal of rare Earths 2016年第8期34卷 814-819页

作者： r.V.rodngues l.Marciniak l.U.Khan J.r.Matos H.F.Brito W.Strek Institute of Chemistry University of Sao Paulo Butanta 748 26077 Sao Paulo Brasil Institute of low Temperature and Structure research University of Wroctaw Oko1na 250-422 Wroclaw Poland

The yellow emitting dysprosium oxysulfide （Dy2O2S） and dysprosium oxysulfate （Dy202SO4） compounds were prepared from the thermal decomposition of hydrated dysprosium sulphate. The materials were characterized by using thermogravimetry （TG/DTG）, X-ray powder diffraction （XrD）, Fourier transform infrared （FTIr） and raman spectroscopies. The thermal stability temperatures at around 1151 and 1313 K were determined for the Dy202S and Dy202SO4 materials, respectively. The photolumines- cence properties of the dysprosium oxysulfide were investigated, showing narrow emission bands assigned to the 4F9/2----＊6HJ intracon- figurational transitions of the Dy3＋ ion. The yellow emission color of this phosphor suggests that the Dy202S is a promising material for applications in lEDs.

关键词： Dy202S/Dy202SO4 sulfate thermal decomposition luminescence rare earths

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laboratory research of coal geocomposits—some results

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中国有色金属学会会刊：英文版 2005年第S1期15卷 279-283页

作者： K. Soucek l. Stas r. Snuparek Institute of Geonics Academy of Sciences Studentska 1768 708 00 Ostrava-Poruba Czech RepublicInstitute of Geonics Academy of Sciences Studentska 1768 708 00 Ostrava-Poruba Czech RepublicInstitute of Geonics Academy of Sciences Studentska 1768 708 00 Ostrava-Poruba Czech Republic

Coal beds rank among the weakest components of carboniferous rock massif in Upper Silesian coal basin. At present chemical grouting is being used in mining for reinforcing and stabilizing of rock strata. Due to low viscosity of a majority of chemical grouting means they are preferably applied for reinforcing of cracked rocks and coal seams. reinforcing coal seams by means of chemical grouting, the properties and behaviour of coal seams grouted in this way are largely changed. This contribution deals with some laboratory results of grouted sample failure testing by which the effect of reinforcement grouting has been elucidated from the point of view of rock burst control.

关键词： chemical grouting reinforcing geocomposite material

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Influence of alloy element partitioning on strength of primary α phase in Ti-6Al-4V alloy

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Journal of Materials Science & Technology 2018年第5期34卷 782-787页

作者： l.r.Zeng H.l.Chen X.li l.M.lei G.P.Zhang Shenyang National laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China University of Chinese Academy of Sciences Beijing 100049 China School of Materials Science and Engineering University of Science and Technology of China Shenyang 110016 China AVIC Commercial Aircraft Engine Co.LTD Shanghai 200241 China

The partitioning effect of Al（α-phase stabilizer） and V elements（β-phase stabilizer） on strength of the primary α phases in the α/β Ti-6 Al-4 V alloy with the bimodal microstructure was *** was found that partitioning of Al and V elements took place in the Ti-6 Al-4 V alloy during the recrystallization process,leading to the variation of the content of Al and V elements in the primary α phases with changing the volume fraction of the primary α *** tests reveal a general trend that the strength of the primary α phases increases with decreasing the volume fraction of the primary α phases,and such trend is independent on the loading direction relative to the c-axis of the α *** enhanced strength is attributed to the increase of the content of Al element in the primary α phase,but it is not dominated evidently by the change of the V *** solid solution strengthening contributed from both the elastic strain introduced by the solute atoms and the variation of the density of states was estimated theoretically.

关键词： Ti-6Al-4V Nanoindentation Strength Alloy element partitioning Crystallographic orientation

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Voltammetric sensor based on cobalt-poly(methionine)-modified glassy carbon electrode for determination of estriol hormone in pharmaceuticals and urine

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Journal of Pharmaceutical Analysis 2019年第5期9卷 347-357页

作者： Eliziana S. Gomes Fernando r.F. leite Bruno r.l. Ferraz Henrique A.J.l. Mourao Andrea r. Malagutti Department of Pharmacy Faculty of Biological and Health Sciences Federal University of Jequitinhonha and Mucuri Valleys MGT 367 Highway e Km 583 CEP 39100-000 Diamantina MG Brazil Department of Biology Federal University of Espírito Santo CEP 29500-000 Alegre ES Brazil Institute of Science and Technology Federal University of Jequitinhonha and Mucuri Valleys MGT 367 Highway e Km 583 CEP 39100-000 Diamantina MG Brazil

A voltammetric sensor based on the electropolymerization of cobalt-poly(methionine)(Co-poly(Met)) on a glassy carbon electrode (GCE) was developed and applied for the determination of estriol by differential pulse voltammetry (DPV) for the first time. The electrochemical properties of the Co-poly(Met)/GCE were analysed by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) were used to characterize the polymers on the GCE surface. The deposition of the Co-poly(Met) film on the GCE surface enhanced the sensor electronic transfer. CV studies revealed that estriol exhibits an irreversible oxidation peak at t0.58 V for the Co-poly(Met)/GCE (vs. Ag/AgCl reference electrode) in 0.10 mol/l Britton-robinson buffer solution (pH=7.0). Different voltammetric scan rates (10-200 mV/s) suggested that the estriol oxidation on the Co-poly(Met)/GCE surface is controlled by adsorption and diffusion processes. Based on the optimized DPV conditions, the linear responses for estriol quantification were from 0.596 μmol/l to 4.76 μmol/l (r2 =0.996) and from 5.66 μmol/l to 9.90 μmol/l (r2 =0.994) with a limit of detection (lOD) of 0.0340 μmol/l and a limit of quantification (lOQ) of 0.113 μmol/l. The DPV-Co-poly(Met)/GCE method provided good intra-day and inter-day repeatability with rSD values lower than 5%. Also, no interference of real sample matrices was observed on the estriol voltammetric response, making the DPV-Copoly( Met)/GCE highly selective for estriol. The accuracy test showed that the estriol recovery was in the ranges 96.7%-103% and 98.7%-102% for pharmaceutical tablets and human urine, respectively. The estriol quantification in pharmaceutical tablets performed by the Co-poly(Met)/GCE-assisted DPV method was comparable to the official analytical protocols.

关键词： Estriol Electroanalysis Differential pulse voltammetry Cobalt-poly(methionine) film-modified glassy carbon electrode

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Toward an understanding of dwell fatigue damage mechanism of bimodal Ti-6Al-4V alloys

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Journal of Materials Science & Technology 2022年第13期108卷 244-255页

作者： l.r.Zeng l.M.lei X.M.luo G.P.Zhang Shenyang National laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Mechanical Engineering Chengdu UniversityChengdu 610106China AECC Shanghai Commercial Aircraft Engine Manufacturing Co. Ltd.Shanghai 201306China

Dwell fatigue effect is a long-standing problem threatening the long-term service reliability for fan blades and fan disks of an aircraft *** understand the basic mechanism of dwell fatigue damage,pure fatigue and 60 s dwell fatigue properties of bimodal Ti-6Al-4V alloys with different volume fractions of the primaryα(α_(p))phase were examined *** results showed that both pure fatigue and dwell fatigue life decreased with increasing the volume fraction of theα_(p)phase and the dwell fatigue life was lower than the pure fatigue *** quasi-in-situ test results and the quantitative characterization of damage behaviors of the local microstructure units defined by theα_(p)-secondaryα(α_(s))combination reveal that theα_(s)phase close to theα_(p)phase with extensively slip activities was gradually damaged under dwell fatigue loading,while that under pure fatigue loading was undamaged,demonstrating that the dwell loading induced the damage of theα_(s)phase,and further reduced the fatigue life.A stress relaxation-based model is proposed to describe the physical mechanism on dwell fatigue damage of the bimodal Ti-6Al-4V alloy,*** elastic deformation of theα_(s)phase caused by the strain incompatibility would be gradually transformed into plastic deformation during the dwell stage,and thus promotes fatigue *** model provides new insights into the microscopic process of stress/strain transfer between the soft and hard microstructure units under dwell fatigue loading.

关键词： Dwell effect Fatigue damage Stress relaxation Volume fraction of primaryαphase Quasi-in-situ testing

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response to ‘Monotreme middle ear is not primitive for Mammalia’

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National Science review 2021年第10期8卷 12-14页

作者： John r.Wible Sarah l.Shelley Shundong Bi Section of Mammals Carnegie Museum of Natural History Centre for Vertebrate Evolutionary Biology Yunnan University School of Geosciences University of Edinburgh Department of Biology Indiana University of Pennsylvania

To date, a complete auditory apparatus(with malleus, incus, stapes, ectotympanic and perhaps surangular) is known for only three Mesozoic mammals, the haramiyidan Arboroharamiya allinhopsoni [1], the multituberculate Sinobaatar pani [2] and the zhangheotheriid Origolestes lii [3], with subsets of these bones preserved in a handful more,

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SINGlE MACHINE SCHEDUlING WITH CONTrOllABlE PrOCESSING TIMES AND COMPrESSION COSTS (Part Ⅱ:Heuristics for the General Case)

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Applied Mathematics(A Journal of Chinese Universities) 1999年第1期14卷 75-84页

作者： Foulds,l.r. TangGuochun Dept.ofManagementSystems UnivotWaikatoHamiltonNewZealand Dept.ofManagement ShanghaiSecondPolytechnicUniv.Shanghai200002.

Abstract A single machine scheduling problem with controllable processing times and compression costs is *** objective is to find an optimal sequence to minimize the cost of completion times and the cost of *** complexity of this problem is still *** Part I of this paper,the authors have considered a special case where the compression times and the compression costs are equal among all *** a problem appears polynomially solvable by developing an O(n 2) *** this part(Part Ⅱ),a general case where the controllable processing times and the compression costs are not equal is *** propose here two heuristics with the first based on some previous work and the second based on the algorithm developed in Part Ⅰ.Computational results are presented to show the efficiency and the robustness of these heuristics.

关键词： 1991 Mr Subject Classification 68Q25

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Deep bed filtration model for cake filtration and erosion

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Applied Mathematics and Mechanics(English Edition) 2024年第2期45卷 355-372页

作者： l.I.KUZMINA Y.V.OSIPOV A.r.PESTErEV Department of Applied Mathematics HSE UniversityMoscow 101000Russia Department of Computer Science and Applied Mathematics Moscow State University of Civil EngineeringMoscow 129337Russia

Many phenomena in nature and technology are associated with the filtration of suspensions and colloids in porous media. Two main types of particle deposition,namely, cake filtration at the inlet and deep bed filtration throughout the entire porous medium, are studied by different models. A unified approach for the transport and deposition of particles based on the deep bed filtration model is proposed. A variable suspension flow rate, proportional to the number of free pores at the inlet of the porous medium, is considered. To model cake filtration, this flow rate is introduced into the mass balance equation of deep bed filtration. For the cake filtration without deposit erosion,the suspension flow rate decreases to zero, and the suspension does not penetrate deep into the porous medium. In the case of the cake filtration with erosion, the suspension flow rate is nonzero, and the deposit is distributed throughout the entire porous medium. An exact solution is obtained for a constant filtration function. The method of characteristics is used to construct the asymptotics of the concentration front of suspended and retained particles for a filtration function in a general form. Explicit formulae are obtained for a linear filtration function. The properties of these solutions are studied in detail.

关键词： deep bed filtration cake filtration porous medium particle deposition and erosion analytical solution concentration front

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SINGlE MACHINE SCHEDUlING WITH CONTrOllABlE PrOCESSING TIMES AND COMPrESSION COSTS （PArT I：EQUAl TIMES AND COSTS）

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Applied Mathematics(A Journal of Chinese Universities) 1998年第4期13卷 417-426页

作者： TANGGUOCHUN FOUlDS,l.r. DepartmentofManagement ShanghaiSecondPolytechncUniversityShanghai200002. DepartmentofManagementSystems UniversityofWaikatoHamiltonNewZealand

Abstract Most papers in scheduling research have treated individual job processing times as fixed parameters. However, in many practical situations, a manager may control processing time by reallocating resources. In this paper, authors consider a machine scheduling problem with controllable processing times. In the first part of this paper, a special case where the processing times and compression costs are uniform among jobs is discussed. Theoretical results are derived that aid in developing an O(n 2) algorithm to slove the problem optimally. In the second part of this paper, authors generalize the discussion to general case. An effective heuristic to the general problem will be presented.

关键词： Machine scheduling problems controllable processing times uniform compression timeand cost dominance set lateness crash activities polynomial time algorithm

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