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Cell Research 2007年第6期17卷 483-485页

作者： anna Amtmann Patrick Armengaud Plant Sciences Group.Institute of Biomedical and Life Sciences University of GlasgowGlasgow G12 8QQUK.

Potassium （K-） is an essential macronutrient for all livingorganisms and large amounts are required for plant growthand development. In many regions of Asia K+-fertilizationhas been neglected and soils have become K+-depleted. K+-deficiency in the field diminishes not only crop productionbut also leads to environmental problems due to inefficientusage and leaching of nitrate. Consequences of K+-defi-ciency on crop production range from decreased biomass,nutritional quality and taste of the crops to inferior harvestand storage properties, as well as increased susceptibilityto disease. Effects of K+-deficiency on plant physiology in-clude decreased photosynthetic rate, impaired tissue alloca-tion of sugars and amino acids, decreased protein synthesis,and lack of control over turgor and gas exchange [1], K+-uptake and its re-distribution within the plant is facilitatedby a plethora of membrane transport proteins displayingan astonishing diversity with respect to their affinity andselectivity for K+, mode and direction of transport, tissuespecific expression, membrane localization and regulation[2]. Microarray experiments have shown that in contrastto transporters of other macronutrients - genes encodingK--transporters display surprisingly little responsiveness tothe external nutrient supply [3]. This observation probably

关键词： CIPK The role of calcium sensor-interacting protein kinases in plant adaptation to potassium-deficiency new answers to old questions

Target tracking for non-identical high-order networks based on reduced-order observers

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Journal of Control and Decision 2020年第2期7卷 178-195页

作者： Yanhua Qu anna Wang College of Information Science and Engineering Northeastern UniversityShenyangLiaoning 110819People’s Republic of China

In this paper,target tracking for non-identical high-order networks is presented under the digraph network *** target agent has different dimensions with the *** first address a distributed dynamic state feedback control law to solve the output tracking *** a reduced-order observer is designed,and an observer-based dynamic output feedback control law is given for the case that the states of the agents are not fully ***,some simulation results are given to illustrate the validity of the theoretical results.

关键词： Cooperative control target tracking reduced-order observer Sylvester equation

Double-check in Lizard Age Estimation:Use of Phalanx Bone and Keratin Claw Sheath Lamellas

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Asian Herpetological Research 2024年第1期15卷 59-61页

作者： Eduard GALOYAN Natalia SOPILKO anna KOVALYEVA anna CHAMKINA A.N.Severtsov Institute of Ecology and Evolution Moscow 119071Russia Lomonosov Moscow State University Leninskie Gori 1Moscow 119991Russia

Dear Editor,The problem of age estimation in amphibians and reptiles with annual fluctuations of growth pattern has been considered to be mostly solved since the skeletochronological method was introduced(Kleinenberg and Smirina,1969).This method is based on counting the number of lines of arrested growth(LAGs)—cyclical growth marks that are usually formed annually and characterized by different optical aspects within the tubular bones.

关键词： estimation method usual

Natural radioactive environment of urban soils in Shihezi, China

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Nuclear Science and Techniques 2009年第6期20卷 335-339页

作者： GE Benwei LIU anna College of Tourism and Environment Shaanxi Normal University Xi＇an Shaanxi 710062 China Department of Geography Shihezi University Shihezi Xinjiang 832000 China

Radionuclides, such as 238U, 232Th and 40K, can be found in urban soil. To evaluate the natural radioactivity in the environment, soil samples were collected form Shihezi city and radioisotope concentrations were determined by X-ray fluorescence. The dose rate of urban soil (mGy per year, mGy/a) was calculated. The results indicate that the U, Th and K concentrations of the urban soils were, respectively, 1.2-3.2 mg/kg, 6.4-12.3 mg/kg and 2.05%-2.24%, with the mean values of 2.47 mg/kg, 10.47 mg/kg and 2.16 %. Dose rates of urban soils were 10.04-19.55 mGy/a with the mean value of 16.31 mGy/a. This dose rate is the perfect and maximum value of natural radiation in soil and different with the air absorbed dose rate from terrestrial γ-rays. The mean value of air absorbed dose rate was about 57.42 nGy/h. The annual effective dose rate in air was about 0.07 mSv/a and the average value of Raeq in urban soil was 120.37 Bq/kg. The relative contribution of α particle to the dose rate is higher than that derived from β- and γ-rays in the urban soils.

关键词：城市土壤放射性环境天然放射性石河子市中国放射性同位素剂量率放射性核素

Perception of artificial conspecifics by bearded dragons(Pogona vitticeps)

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Integrative Zoology 2019年第2期14卷 214-222页

作者： anna FROHNWIESER Thomas W.PIKE John C.MURRAY anna WILKINSON School of Life Sciences University of LincolnLincolnUK School of Computer Science University of LincolnLincolnUK Wildlife Research Center Kyoto UniversityKyotoJapan

Artificial animals are increasingly used as conspecific stimuli in animal behavior ***,researchers often have an incomplete understanding of how the species under study perceives conspecifics,and,hence,which features are needed for a stimulus to be perceived *** investigate the features that bearded dragons(Pogona vitticeps)attend to,we measured their lateralized eye use when assessing a successive range of *** ranged through several stages of realism in artificial conspecifics,to see how features such as color,the presence of eyes,body shape and motion influence *** found differences in lateralized eye use depending on the sex of the observing bearded dragon and the artificial conspecific,as well as the artificial conspecific’s ***,this approach can inform the design of robotic animals that elicit biologically-meaningful responses in live animals.

关键词： bearded dragons conspecifics lateralized eye use perception

Influences of Catch Crop and Its Incorporation Time on Soil Carbon and Carbon-Related Enzymes

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Pedosphere 2015年第4期25卷 569-579页

作者： anna PIOTROWSKA-DLUGOSZ Edward WILCZEWSKI Department of Soil Science and Soil Protection Division of Biochemistry Faculty of Agriculture and Biotechnology UTP University of Science and Technology Department of Agrotechnology Faculty of Agriculture and Biotechnology UTP University of Science and Technology

Catch crops that are cultivated for green manure play an important role in improving soil properties. A 3-year field experi- ment was conducted to investigate the effect of catch crop （pea, Pisum sativum L.） management, i.e., incorporation of catch crop in October/November （autumn） and March （spring）, and without catch crop （control）, on soil organic carbon （SOC）, microbial biomass carbon （MBC） and the activities of carbon （C）-cycle enzymes, including cellulase （Cel）, β-glucosidase （Glu） and invertase （Inv）. Additionally, soil total nitrogen （TN） and pHKcl were investigated. The catch crop was cultivated from August to October each year during 2008-2010. Soil samples were collected from the field of spring barley （Hordeum vulgate L.） that had been grown after the catch crop. Soil samples for microbial activity determination were taken in March, May, June and August in 2009, 2010 and 2011, while SOC and TN contents as well as pHKc1 were determined in March and August. The chemical properties studied did not show significant changes as influenced by the experimental factors. The use of catch crop significantly increased the MBC content and the activities of C-cycle enzymes compared to the control. When the catch crop was incorporated in spring, a significantly higher MBC content was noted in March and May compared to autumn incorporation. Moreover, the spring incorporation of the catch crop significantly increased the Glu activity （except March）, while the activities of Cel and Inv as well as the rate of soil basal respiration were usually unaffected by the time of catch crop incorporation. Greater microbial biomass and higher enzyme activities in the catch crop-treated soil, compared to the control, indicated that the application of the catch crop as a green manure could be recommended as a promising technique to increase the biological activity of the soil. Since there was no significant effect or no consistent results were obtained related to the time of catch crop

关键词： cellulase β-glucosidase invertase microbial biomass carbon soil basal respiration

Competition of insect decomposers over large vertebrate carrion:Necrodes beetles(Silphidae)*** flies(Calliphoridae)

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Current Zoology 2022年第6期68卷 645-656页

作者： Szymon MATUSZEWSKI anna MADRA-BIELEWICZ Laboratory of Criminalistics Adam Mickiewicz UniversityPoznan 61-809Poland Wielkopolska Centre for Advanced Technologies Adam Mickiewicz UniversityPoznan 61-614Poland

Large carrion is inhabited by highly variable and interactive communities of *** interactions in carrion insect communities have been recently the focus in carrion *** contrast,competition between carrion insects is rather *** we provide evidence that blow flies(Calliphoridae)and Necrodes beetles(Silphidae),dominant decomposers of large carcasses in terrestrial habitats,compete over *** reanalyzing the results from 90 pig carcasses,we demonstrated that the contribution of the flies and the beetles to the decay was negatively *** greater part of the large carrion pool was monopolized by blow flies,whereas Necrodes beetles abundantly colonized carcasses,on which blow flies were less effective as *** behavioral assays,we found that adult beetles killed 4 times more frequently feeding than postfeeding third instar larvae of the flies,with the large decrease in the killing frequency after the larvae reached the age of early third ***,adult Necrodes beetles preferentially killed the larvae that were before or in their peak *** study provides evidence that the interaction between blow flies and Necrodes beetles is a combination of indirect exploitative effects of the flies and direct interference effects of the beetles(the mixed competition).

关键词： carrion competition interspecific interactions

Vibration control of a structure using Magneto-Rheological grease damper

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Frontiers of Mechanical Engineering 2013年第3期8卷 261-267页

作者： Shinya sugiyama Tomoki SAKURAI Shin MORISHITA Graduate School of Environment and Information Sciences Yokohama National University

This paper describes an application study of Magneto-Rheological(MR)grease damper to a structure with three *** fuid is known as one of successful smart materials whose rheological properties can be varied by magnetic feld strength,and has been applied to various kinds of device such as dampers,clutches,engine mounts,***,ferromagnetic particles dispersed in MR fuid settle out of the suspension after a certain interval due to the density difference between the particles and their career *** overcome this defect,we have developed a new type of controllable working fuid using grease as the career of magnetic *** of thickener in grease is expected to hold the magnetic particles and prevent them from settled *** or little sedimentation was observed in MR grease whose characteristics could be controlled by the magnetic feld *** grease was introduced into a cylindrical damper and its performance was *** a result,it was confrmed that the damping force of MR grease damper could be controlled by the applied electric current to the coil in the cylinder of ***,vibration response of a three-story model structure equipped with MR grease damper was investigated experimentally,and it was shown that MR grease damper worked effectively as a semi-active damper.

关键词： vibration control damper smart material Magneto-Rheological (MR) grease MR fluid

The Middle-aged and Knowledge Workers: Demographic and Economic Changes in the Pearl River Delta, China

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Chinese Geographical Science 2022年第2期32卷 268-284页

作者： FENG Pengfei anna GROWE SHEN Yuming College of Resources Environment&TourismCapital Normal UniversityBeijing 100048China Institute of Geography Heidelberg UniversityBerliner Strafie 48D-69120 HeidelbergGermany

Demographic and economic development can be seen as two sides of one coin in the process of regional *** article deals with how economic and demographic changes influence the settlement structure and development of the Pearl River Delta(PRD)and lead to regionalization processes within the large *** aim of the study was to understand the interrelation between the three aspects:economic change,demographic change and change of spatial *** on population age and occupational data,spatial changes in demographic structure and economic activities from 2000 to 2010 were *** was found that the demographic and economic change reflected changing spatial patterns between the urban centers and the hinterland in the *** processes were apparent during the studied period in the hinterlands and the high-density areas of the *** one hand,the hinterlands in the PRD attracted more manufacturing activities,while the inner high-density areas experienced a decrease in manufacturing,associated with an increase in young labor in regions where workplaces that only required limited education *** the other hand,specialization in knowledge-intensive business services increased in the inner high-density areas,which also saw an increased share in the older *** finding suggests that increasing knowledge-intensive work correlates with higher age structures due to the longer formal education required and also the benefits knowledge workers accrue through experience and gained knowledge over ***,based on a transformation process,we tentatively conclude that the populations in high-density areas in the PRD became more middle-aged and were represented by more knowledge workers.

关键词： manufacturing knowledge-intensive business services(KIBS) economic change demographic change Pearl River Delta

Carcinoembryonic antigen inhibits neutrophil activation by N-formyl-methionyl-leucyl-phenylalanine

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BIOCELL 2015年第2期39卷 1-3页

作者： anna PAŃCZYSZYN anna KROP-WATOREK Maciej WIECZOREK University of Opole Department of Biotechnology and Molecular BiologyOpolePoland Ludwik Hirszfeld Institute of Immunology and Experimental Therapy Polish Academy of SciencesWroclawPoland

Carcinoembryonic antigen(CEA)is a surface glycoprotein expressed in human epithelial cells and is released from their surface,especially during colorectal ***,colorectal cancer is accompanied by inflammation,where tumor-infiltrating neutrophils play an important *** was also found to be a strong chemotactic agent for *** purpose of this study was to find out if CEA can enhance neutrophil priming and *** neutrophils were activated by N-formyl-methionyl-leucyl-phenylalanine(formyl-MLP)and the resulting oxidative burst was measured ***,in vitro priming of neutrophils by CEA,alone or preceded by LPS,inhibited subsequent activation of these cells by *** may have anti-inflammatory properties in vivo.

关键词： CEA oxidative burst formyl-MLP