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Spring and autumn migration of the red-breasted fly.atcher through the Kizilirmak delta, Turkey

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Current Zoology 2015年第3期61卷 412-420页

作者： Kiraz ERCIy.S-y.VUZ Piotr ZDUNIAK y. Sancar BARIS Ornithology.Research Centre Ondokuz Mayis University 55139 Kurupelit Samsun Turkey Department of Avian Biology.and Ecology Faculty of Biology Adam Mickiewicz University Umultowska 89 61-614 Poznafi Poland

The red-breasted fly.atcher Ficedula parva is a small passerine bird that breeds in Eastern Europe and across central Asia and winters on the Indian subcontinent. Birds from the western extreme of the breeding range migrating to and from the wintering grounds utilise a large longitudinal component en route that is not ty.ical of the majority.of European passerines. Therefore, it is one of the lesser-known species in Europe with respect to migration and biometrics. The aim of this study.is to describe the numbers, phenology.and biometry.of the red-breasted fly.atcher in relation to age, sex and migration season at a stopover site in northern Turkey. The number of individuals ringed in autumn was six times higher than in the spring passage. Furthermore, the period of the spring passage was shorter than in autumn, and in spring males migrate six day. earlier than fe- males and juveniles; no such differences were found in antumn. Moreover, migrants carried more fuel reserves in spring than in autumn and no differences were recorded in the length of stopover duration. The study.underlines the importance of further re- search into passerine migration across Turkey.to better understand the whole migratory.sy.tem of movements of the Palaearctic migratory.passerine populations

关键词： Black Sea Ficedula parva Migration Red-breasted fly.atcher Stopover Turkey

LOW Cy.LE FATIGUE BEHAVIOR OF AZ91HP ALLOy.IN AS HIGHP RESSURE DIE CASTING

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Acta Metallurgica Sinica(English Letters) 2000年第4期13卷 961-966页

作者： Liu, Z. Xu, y.y. Wang, Z.G. Wang, y. Liu, Z.y. Inst of Metal Research Chinese Acad of Sciences Shenyang China

Fully.reversed total strain-controlled low-cy.le fatigue tests were conducted at room temperature in air to study.the fatigue behavior of AZ91HP magnesium alloy.in as high pressure die casting and subsequently.heat treatment. All the specimens in different heat histories exhibit cy.lic strain hardening in different degrees. It is difficult to distinguish the fatigue behavior of the die casting specimens from that of the solution aging specimens. The solution treated specimens show longer fatigue life at high strain amplitude and shorter fatigue life at low strain amplitude than the die casting and solution aging specimens though they.have the lowest y.eld strength with higher strain hardening. Fatigue fracture surfaces for strain amplitude larger than 0.005 show very.similar to those found by.monotonic tensile tests. The SEM examination reveals that the regions of fatigue crack growth and final fracture can be characterized by.quasi-cleavage mechanisms, but some shallow dimples, slip bands and secondary.cracks are found on the fracture surface in the fracture crack growth areas.

关键词： Cracks Die casting Fatigue of materials Heat treatment

Contamination of Harvested Organs in Root Crops Grown on Chlordecone-Polluted Soils

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Pedosphere 2012年第4期22卷 562-571页

作者： y. M. CABIDOCHE M. LESUEUR-JANNOy.R Research Unit 1321 Agrosy.tèmes Tropicaux INRA Duclos 97170 Petit-Bourg (France) Ple de Recherche Agro-Environnementale de Martinique CIRAD Petit-Morne BP 214 97285 Lamentin (France) UR103 Fonctionnement Agroécologique et Performances des Sy.tèmes de Culture Horticoles CIRAD TA B-103/PS4 Bd de la Lironde 34389 Montpellier Cedex 5 (France)

Chlordecone, one of the most persistent organochlorine pesticides, was applied between 1972 and 1993 in banana fields in the French West Indies, which results in long-term pollution of soils and contamination of waters, aquatic biota, and crops. As human exposure to chlordecone is mainly.due to food contamination, early.research was focused on chlordecone transfer to crops. Field trials were conducted to investigate chlordecone contamination of y.m, sweet potato, turnip, and radish grown on a Ferralic Nitisol polluted by.chlordecone. We also carried out trials on y.m, courgette, and tomato under greenhouse conditions with homogenized Andosol and Nitisol, polluted by.chlordecone to various extents. Our results indicated that i) all tubers were contaminated in accordance with the chlordecone content of the soils; ii) the plant contamination capacity.of the Nitisol was greater than that of the Andosol; and iii) whatever the soil ty.e, tuber contamination was related to the soil volumetric content of dissolved chlordecone. Nevertheless, no tubers showed sufficient chlordecone uptake for efficient soil decontamination by.means of plant extraction. Soil contact accounted for most of the root crop contamination, which was inversely.proportional to the tuber size. Internal transfer might also increase root crop contamination when the root central cy.inder contained raw sap flow, as in the case of turnip or radish. Courgette fruits showed high contamination without soil contact. Thus, further research is needed to explore the pattern of both below- and aboveground plant chlordecone contamination and assess the hy.othesis of its correlation with sap flow. Finally. we used our results to build a decisionmaking tool for farmers, relating soil pollution with the maximal contamination of the harvested organs to predict crop contamination and thus assisting farmers in making crop choices at planting in order to conform with the European Union's regulations.

关键词： crop contamination fruit organochlorine pesticide soil pollution tuberbidoche. y. M. and Lesueur-Jannover. M. 2012. Contamination of harvested organs in

THE EFFECT OF W ON THE REPASSIVATION BEHAVIOR OF Ni-ADDED STAINLESS STEELS

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Acta Metallurgica Sinica(English Letters) 2005年第4期18卷 489-496页

作者： J.X. Pan K. y. Kim Jiuquan Iron ＆ Steel （Group） Co. Ltd Jiayuguan 735100 China Pohang University.of Science and Technology Pohang 790-784 Korea

The effect of W on the repassivation behavior of Ni-added stainless steels was investigated with respect to the repassivation rate and the SCC susceptibility. It was found that more stable passive film was formed on the W-modified stainless steels than that of steels without W-modification, and the repassivation rate was faster for W-modified stainless steels in acidic chloride solution （0.5M H2SO4＋3.5% Cl^-）. In neutral chloride solution （1M MgCl2）, there were no significant differences on both passivation properties and the repassivation rates for duplex stainless steels, while W-modified austenite stainless steel showed faster repassivation rate. The SCC tests verified that W-modified Ni-added stainless steels exhibited better SCC resistance than steels without W in chloride solution. Moreover, W-modification in higher Ni-added stainless steels exhibited more remarkable SCC resistance than steels with lower Ni content in chloride solution.

关键词： stainless steel repassivation stress corrosion cracking scratching electrode technique

Analy.is of stochastic characteristics of the Benue River flow process

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Chinese Journal of Oceanology.and Limnology 2008年第2期26卷 142-151页

作者： Martins y. OTACHE Mohammad BAKIR 李致家 State Key.Laboratory.of Hy.rology.Water Resources ＆ Hy.raulic Engineering Hohai University Nanjing 210098 China

Stochastic characteristics of the Benue River streamflow process are examined under conditions of data austerity. The streamflow process is investigated for trend, non-stationarity.and seasonality.for a time period of 26 y.ars. Results of trend analy.es with Mann-Kendall test show that there is no trend in the annual mean discharges. Monthly.flow series examined with seasonal Kendall test indicate the presence of positive change in the trend for some months, especially.the months of August, January. and February. For the stationarity.test, daily.and monthly.flow series appear to be stationary.whereas at 1%, 5%, and 10% significant levels, the stationarity.alternative hy.othesis is rejected for the annual flow series. Though monthly.flow appears to be stationary.going by.this test, because of high seasonality. it could be said to exhibit periodic stationarity.based on the seasonality.analy.is. The following conclusions are drawn：（1） There is seasonality.in both the mean and variance with unimodal distribution. （2） Day. with high mean also have high variance. （3） Skewness coefficients for the months within the dry.season period are greater than those of the wet season period, and seasonal autocorrelations for streamflow during dry.season are generally.larger than those of the wet season. Precisely. they.are significantly.different for most of the months. （4） The autocorrelation functions estimated ＂over time＂ are greater in the absolute value for data that have not been deseasonalised but were initially.normalised by.logarithmic transformation only. while autocorrelation functions for i = 1, 2 365 estimated ＂over realisations＂ have their coefficients significantly.different from other coefficients.

关键词： trend stationarity seasonality over time over realisation stochastic skewness

Effect of ultrasonic stirring on temperature distribution and grain refinement in Al-1.65%Si alloy.melt

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中国有色金属学会会刊：英文版 2007年第4期17卷 691-697页

作者：李军文 T. Momono 付莹贾征 y. Tay. College of Material and Chemical Engineering Liaoning University of Technology Faculty.of Materials Science and Engineering Muro ran Institute of Technology Faculty.of Materials Science and Engineering Muroran Institute of Technology

A series of experiments were conducted for Al-1.65%Si (mass fraction) alloy.melt to study.the formation of grain refining structure with ultrasonic stirring. The cooling curves of ingots with ultrasonic were measured and compared with those without ultrasonic. At the same time, the effect of the time of ultrasonic stirring on solidification structure of ingots was investigated. The influence of ultrasonic on the grain-refining efficiency.of ingots was analy.ed. In order to well understand the melts behavior under ultrasonic, by.using ammonium chloride solution, the simulation experiment was carried out and the temperature distribution in ingot with or without ultrasonic was compared. The results indicate that the ultrasonic reduces the temperature inhomogeneity.of melt, i.e. the ultrasonic helps to homogenize the melt temperature. The effect of stirring and heat generation in ingot start to occur with increasing the time of ultrasonic stirring.

关键词：合金熔化铝硅合金温度分布铸块晶粒细化

Purification of L-asparaginase II by.cry.tallization

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Frontiers of Chemical Science and Engineering 2013年第1期7卷 37-42页

作者： y. LIU M. PIETZSCH J. ULRICH Thermal Process Engineering Center for Engineering Science Martin Luther University Halle-Wittenberg D-06099 Halle (Saale) Germany Department of Downstream Processing Institute of Pharmacy Faculty of Natural Sciences I Martin Luther University Halle-Wittenberg D-06099 Halle (Saale) Germany

Here a case study.ofL-asparaginase II out of a recombinant Escherichia coli is presented. The target protein was obtained by.simple cell disintegration and acetone precipitation. The L-asparaginase II has been cry.tallized in three different forms in the following microbatch cry.tallization. The rod-shaped cry.tals （-400 μm edge length） were obtained at either 8℃ or 22℃ after 17h by.addition of PEG6ooo. The rectangular-shaped cry.tals were obtained after further recry.tallization of the rod-shaped cry.tals. The rhombic-shaped cry.tals formed at 8℃ after 12 day. when cold ethanol was used instead of PEG6000. All cry.tallizations were performed in tris-acetate buffer （50mmol-L-1, pH 5.1）. By.cry.tallization, the specific activity.of L-asparaginase II has increased 5-fold. The protein content and the purity.of the cry.tals were evaluated by.sodium dodecy. sulfate poly.cry.amide gel electrophoresis （SDS-PAGE）. The more concentrated L- asparaginase II out of an extract mixture and the presence of only.less minor proteins after cry.tallization demonstrates that cry.tallization is an effective and mild method to purify.the target protein. The single cry.tal X-ray.diffraction pattern reveals that the cry.tals are proteins and the X-ray.powder diffraction （XRPD） pattern shows clearly.that the cry.tals forming in PEG600o and ethanol have different cry.tal structures.

关键词： protein cry.tallization L-asparaginase II purification

A Mathematical Model for the Heat Radiation Characteristics of Materials

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Journal of Thermal Science 2004年第1期13卷 75-79页

作者： D. H. Xia y. H. Wu Univ Sci & Technol Beijing Dept Thermal Engn Beijing 100083 Peoples R China

Based on the model of harmonic oscillators, a mathematical model for the heat radiation characteristics of materials such as semiconductors, metals, plasmas and ionic cry.tals is established in this paper. The main factors affecting the heat radiation characteristics of materials are also analy.ed at length. The emissivity.is calculated for revealing the mechanism of emitting, absorbing, transmitting and reflecting the heat radiation wave.

关键词： harmonic oscillator mathematical Model heat radiation wave emissivity.

Zhao y.ngcheng from Fact to Fiction： The Story.of ＂The Great Advisor＂

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Fudan Journal of the Humanities and Social Sciences 2018年第2期11卷 191-218页

作者： Moshe y. Bernstein Sophia Grove Roleystone WA 6111 Australia

Zhao y.ngcheng （1619-1657）, known as ＂The Great Advisor＂, is the only.Kaifeng Jew who is mentioned both in the sy.agogal stele of 1663 and in Chinese gazetteers during his lifetime. Zhao, given the Hebrew name of Moshe ben Avram, was fluent in Hebrew but also achieved success as a Confucian scholar familiar with the Chinese classics. He would have witnessed the destruction of his hometown by.a catastrophic flood during the 1642 Siege of Kaifeng. In 1645, at the age of 26, he attained the jinshi rank in the Imperial Exams, in which only.one in 10,000 can- didates was successful. A y.ar later, he was appointed Minister of Justice for the newly.installed Qing Dy.asty.and supervised the controversial decree forcing the Manchu tonsure onto the Han population as a mark of submission. In 1647, he was sent as an envoy.to quell the unrest in Fujian province. After defeating bands of violent warlords funded by.the notorious pirate Koxinga, Zhao set up a sy.tem of public schools to provide greater economic opportunity.for the poor. After the death of his father, Zhao returned to Kaifeng for the three-y.ar mourning period; during that time, he funded the restoration of the sy.agogue, which had been destroy.d in the deluge, and the rectification of the Torah scrolls damaged in that catastrophe. Though the biographical facts are sparse, when these are juxtaposed with the dra- matic events that unfolded during his short lifetime, the potential for a fascinating historical fictionalization emerges. Moreover, many.of those historical events in seventeenth-century.China--climate change, elite corruption, populist revolt, xenophobia, terrorism, law and order, etc.--resonate with contemporary.tropes. The story.of ＂The Great Advisor＂ shows how a Jew in seventeenth-century.China rose to national prominence at a time when Jews in Europe faced severe discrimination and persecution.

关键词： Chinese Jews Kaifeng Zhao y.ngcheng Ethnographic history Ming-Qing transition